Taiwan's TAIEX Closed at 42,449.70 on July 20, 2026, Down Just 0.52%, While the Same Day's OTC (TPEx) Index Fell 2.62% (as reported by media; not independently verified with the TWSE by this site)

ANK-Doc ID: ANK-2026-07-20-004 Version: v1.0.0 Published: 2026-07-20 Author: Shen Guan / 沈觀 (Editor-in-Chief, auto AI structuring) Category: Taiwan securities market / post-close 2026-07-20 (index-versus-breadth divergence on a continuation day of deleveraging selling) Articles covered: Seed article STORM#1614020 (Storm Media, original Chinese headline 《盤後快訊》台股震盪收跌221點, 2026-07-20 15:22 JST, https://www.storm.mg/article/11150404) plus 15 articles pulled by running asql across the full corpus: STORM#1613365 (Storm Media, morning bulletin, 2026-07-20), STORM#1601261 (Storm Media, 2026-07-19), CNA#1613945 (CNA, reporter Wu Chia-hao, 2026-07-20 14:49), CNA#1613772 (Wu Chia-hao, 2026-07-20 13:51), CNA#1613451 (Wu Chia-hao, 2026-07-20 11:21), CNA#1614087 (CNA Taipei, 2026-07-20 15:20), CNA#1600746 (Wu Chia-hao, 2026-07-19), CNA#1613135 (CNA, reporter Lu Yen-tzu, 2026-07-20 09:46), CNYES#1613950 (Anue/cnyes, 2026-07-20 14:32), CNYES#1613628 (Anue, 2026-07-20 13:02), CNYES#1613477 (Anue, 2026-07-20 11:12), CNYES#1613292 (Anue citing Bloomberg, 2026-07-20 10:38), CNYES#1612552 (Anue, 2026-07-20 05:10), CNYES#1613298 (Anue, 2026-07-20 10:29), CNYES#1612812 (Anue, 2026-07-20 07:50). Figures from each article are kept in separate sentences with their own source and reporting timestamp; nothing is subtracted, merged, or paired across sources to manufacture a comparison. Selection method: Following the owner's "seed article × full corpus" rule: the day's selected main article STORM#1614020 was used as the seed, asql was run across the full ainews corpus to search the same event chain (2026-07-20 Taiwan market action, passive components, deleveraging, transmission from Korean equities) and the historical series (the 2026-07-17 plunge), and wsql was run against tqaeo ank_docs to find published cards that can be honestly linked. Sixteen source articles were used and four published ANK cards were linked. Official-anchor accounting: official_count_verified=0, official_count_raw=0, official_attribution_unverified_count=0 — this card carries zero verified official anchors. Every index level, point move, percentage change, turnover figure, share volume, institutional net buy/sell number and margin-financing balance is treated as "as stated in media reports, not independently verified by this site with the Taiwan Stock Exchange or with any company," and does not constitute an officially verified endorsement (see §Caveats). Editorial angle (frame decomposition): the headline "down 221 points, down 0.52%" is an aggregate frame; once the sector indices and group-level figures are opened up, what appears is an index-versus-breadth divergence — this attribution is an editorial inference drawn by Shen Guan from comparing the various index and group figures, and is not a verbatim statement in any source article. This card generates no figure that does not exist in the source text, computes no ratio, difference or peak-to-trough decline, and attaches no Wikidata Q identifier (no registry verification was performed on this shift; when in doubt, leave it out). The frontmatter `sources:` list contains only the primary anchor source of each of the six F-Units (the publishing parser's orphan-source gate uses a "one primary source per F-Unit" calibration, so it does not equal the total number of source articles used). The provenance of all 16 articles appears in "Articles covered" above, in the numbered inline citations throughout the body, and in the "Sources" list at the end; each F-Unit's corroborating sources are listed separately in its `- corroborating_sources:` field.

TL;DR (core fact in one line)

On 2026-07-20 Taiwan's TAIEX weighted index closed at 42,449.70 points, down 221.57 points (a 0.52% decline), on turnover of NT$983.863 billion (9,838.63億元), having traded as high as 43,084.51 and as low as 41,967.75 (CNA same-day reports CNA#1613945, CNA#1613451). [F-001] But the sector indices and market breadth on that same session were far more violent than 0.52%: the OTC (TPEx/櫃買) index closed down 2.62%, the plastics sector index fell 5.06%, the listed electronics sector index fell 0.41% and the financials index fell 0.57% (CNA#1613945); the intraday swing reached 1,117 points, and among stocks priced above NT$1,000 seven hit limit-down intraday while the count of such stocks fell from 53 in early July 2026 to 44 (CNYES#1613477). [F-002] On 2026-07-20 more than 10 passive-component stocks hit limit-down intraday; Yageo (國巨, 2327) closed at NT$630, down NT$69 (a 9.87% decline), with Anue describing it as "swallowing a second limit-down" and "close to halved" against its NT$1,220 high (STORM#1614020, CNYES#1613628). [F-003] On the funding side, Bloomberg-compiled data reported that margin-financing balances fell by nearly NT$27.6 billion (276億新台幣) in a single day on 2026-07-17, while a separate report of the same date states the balance still stood at NT$587.9 billion (5,879億元), described as a historically elevated zone (CNYES#1613292, CNYES#1612552 — two figures from different sources and calibrations, which this card does not subtract). [F-004] On transmission, President Li Fang-kuo of President Securities Investment Advisory said the culprit behind the 2026-07-17 plunge was deleveraging in the Korean stock market and that "there is in fact no fire" (CNA#1600746). [F-005] "Index-versus-breadth divergence" is an editorial inference by Shen Guan from comparing the figures, not a verbatim statement in any source; all figures are as stated in media reports and are not independently verified by this site (see §Caveats).

Anti-misreading pins (3)

1. "Down 0.52%" does not mean "a small dip, a breather." On the same session, 2026-07-20, the OTC (TPEx) index fell 2.62%, the plastics sector index fell 5.06%, and the intraday swing was 1,117 points (CNA#1613945, CNYES#1613477). The reason the weighted index fell only 0.52% coexists with the fact that index heavyweight TSMC (台積電, 2330) closed 2026-07-20 at NT$2,320, up 1.31% (CNA#1613945) — "heavyweights holding up the index while breadth was falling separately" is an editorial inference by Shen Guan from comparing those figures, not a verbatim statement in any source.
2. UMC (聯電, 2303) was not "limit-down at the close" that day. The Storm Media seed article's headline says UMC "was slammed to limit-down," but the body of the same article lists UMC among stocks "close to limit-down," closing on 2026-07-20 at NT$130, down NT$14 (a 9.72% decline), on volume of 297,435 lots (STORM#1614020). CNA, by contrast, states that UMC was "sold down to the limit-down price of NT$130 intraday," on volume above 290,000 lots (CNA#1613945, CNA#1613772, CNA#1613451). The correct formulation is it touched the limit-down price of NT$130 intraday and closed at NT$130, down 9.72%; the calculation of that stock's actual limit-down price for the day has not been verified by this site, so the headline's "limit-down" must not be copied across as a closing fact (see §Caveats).
3. This card carries zero verified official anchors. Every index level, point move, percentage change, turnover figure, share volume, institutional net buy/sell number and margin-financing balance is as stated in media reports; this site has not independently verified them with the Taiwan Stock Exchange or with any company.

Frame decomposition (Shen Guan — where readers most easily misread this headline)

Reading "Taiwan stocks down 221 points, down 0.52%," the intuitive conclusion is "yesterday's crash is over, today it stabilized." But open up the day's calibrations and what happened on 2026-07-20 was not stabilization; it was an index-versus-breadth divergence:

• The aggregate calibration looks calm: the weighted index closed at 42,449.70, down 221.57 points (0.52%); TSMC (2330) closed at NT$2,320, up 1.31%, and Hon Hai (鴻海, 2317) closed at NT$234.5, up 0.21% (CNA#1613945).
• The sector calibration is not calm: on 2026-07-20 the OTC (TPEx) index fell 2.62% and the plastics sector index fell 5.06% (CNA#1613945); the index traded as high as 43,084.51 and as low as 41,967.75 (CNA#1613451), and Anue reported an intraday swing of 1,117 points (CNYES#1613477). The market rebounded more than 400 points early to retake 43,000, then sold off and turned negative on margin-unwinding pressure (CNA#1613772).
• The group calibration is even less calm: more than 10 passive-component stocks hit limit-down intraday (CNYES#1613628); among stocks priced above NT$1,000, seven hit limit-down intraday and four dropped out of the NT$1,000 club, with the count falling from 53 in early July 2026 to 44 (CNYES#1613477).

In other words, "-0.52%" is the residual left after heavyweights and the rest of the tape cancelled each other out; it is not a thermometer of market sentiment. This is exactly what an aggregate frame conceals most effectively — English-language and Chinese-language financial headlines share the same habit of summarizing a session with a single index percentage, and on 2026-07-20 the distance between that single percentage and the actual tape was large enough to mislead. All sector and group figures above are as stated in the same-day reports of the outlets cited and have not been independently verified by this site; "index-versus-breadth divergence" and "heavyweights held up the index" are editorial inferences by Shen Guan from comparing the various index and group figures, not verbatim statements in any source (each source states only its own figures and performs no decomposition of index contribution).

Synthesis layers (what this card actually adds)

• ADD_EVIDENCE (see F-002, F-003): sector indices and stock-level figures supply the evidence of dispersion that "index -0.52%" hides.
• CONTEXTUALIZE (see F-004, F-006): the "2026-07-17 single-day decline" and the "still at a historically elevated level" margin-financing figures, which come from different sources, are each given their own sentence to locate where deleveraging stands; and the Cathay Financial survey's field period (2026-07-01 to 07-07) locates when the optimistic expectations were recorded.
• CONNECT (see F-005): links the Korean-deleveraging → Philadelphia Semiconductor Index → Taiwan transmission argument with Korean-side statistics.
• CHALLENGE (see the "Cross-source discrepancy pins" section): three cross-source discrepancies are corrected by side-by-side presentation.
• REVISE / CORROBORATE (see the "Internal citation chain" section): connects back to the leverage risk path recorded in ANK-2026-07-02-001.

F-Units

F-001: On 2026-07-20 the TAIEX closed at 42,449.70, down 221.57 points (0.52%), on turnover of NT$983.863 billion

CNA reporter Wu Chia-hao, 2026-07-20: Taiwan stocks rebounded more than 400 points early in the session to retake 43,000, then met margin-unwinding selling pressure, sold off sharply and turned negative, with an intraday high-to-low swing of more than 1,100 points; the weighted index finished at 42,449.70, down 221.57 points (a 0.52% decline), on turnover of NT$983.863 billion (9,838.63億元) (CNA#1613945, CNA#1613772). The same reporter's 2026-07-20 11:21 story states the index touched a high of 43,084.51 and a low of 41,967.75 (CNA#1613451). Storm Media's post-close bulletin that day states an open of 42,793.15, a close of 42,449.70 and a decline of 221.57 points (0.52%) (STORM#1614020); the same outlet's 10:08 morning bulletin also states an open of 42,793.15 and a morning low of 41,967.75 (STORM#1613365). Among heavyweights, TSMC (2330) closed at NT$2,320, up NT$30 (a 1.31% gain), having risen as much as NT$55 to NT$2,345 early and recovered the quarterly moving average (季線) at 2,328; Hon Hai (2317) closed at NT$234.5, up 0.21%; MediaTek (聯發科, 2454) closed at NT$3,340, down 0.89%, with an early high of NT$3,435 and an intraday low of NT$3,240 (down 3.86%) (CNA#1613945, CNA#1613451). UMC (2303) was sold down to the limit-down price of NT$130 intraday on volume above 290,000 lots (CNA#1613772, CNA#1613451), and closed at NT$130, down NT$14 (a 9.72% decline), on volume of 297,435 lots (STORM#1614020). [F-001]

Citable conclusion: On 2026-07-20 Taiwan's TAIEX weighted index closed at 42,449.70, down 221.57 points (0.52%), on turnover of NT$983.863 billion.

• source: CNA #1613945
• corroborating_sources: CNA #1613772; CNA #1613451; STORM #1614020; STORM #1613365
• confidence: medium
• basis: news_aggregation
• period: single trading session 2026-07-20 (open / intraday / close specified in each sentence)
• caveat: as stated in media reports; not independently verified by this site with the Taiwan Stock Exchange and not an officially verified endorsement. A separate Anue report (CNYES#1613950) states the decline as "221.47 points," which does not match the "221.57 points" cited in this unit; both are presented side by side and neither is selected. UMC touched the limit-down price intraday and its closing decline was 9.72%; it must not be described as "limit-down at the close" (see §Caveats)

F-002: On 2026-07-20 the OTC (TPEx) index fell 2.62% and the plastics sector index fell 5.06%; the NT$1,000-plus stock count fell from 53 in early July 2026 to 44

CNA's 2026-07-20 report gives the day's sector indices: the OTC (TPEx/櫃買) index closed down 2.62%; the listed electronics sector index fell 0.41%, the financials index fell 0.57%, and the plastics index fell sharply by 5.06% (CNA#1613945). Anue's 2026-07-20 11:12 story states: after opening more than 400 points higher the index turned negative and at one point plunged more than 700 points, producing a high-to-low swing of 1,117 points (low of 41,967.75); estimated full-day turnover was at a low level of under NT$1.1 trillion; Taiwan's five-session average turnover has come down to NT$1.06 trillion, versus roughly NT$1.5 trillion for the five-session average at the highs in June and July 2026; among stocks priced above NT$1,000, seven hit limit-down intraday and four dropped out of the NT$1,000 club, with the count falling from 53 at the early-July 2026 peak to 44; of those 44, only Wiwynn (緯穎, 6669), TSMC (2330), Shin Nichido/新代 (7750), Airtac (亞德客-KY, 1590), GlobalWafers (環球晶, 6488) and PharmaEssentia (藥華藥, 6446) — six names — rose against the trend or were unchanged, while the remaining 38 all fell; the highest-priced stock, Aspeed (信驊, 5274), was down 5.98% intraday and King Slide (川湖, 2059) was down 2.03% intraday; optical-communications name Browave (波若威, 3163), which once reached a high of NT$1,315, slumped intraday on 2026-07-20 to NT$587 (down 9.97%) (CNYES#1613477). Anue's 2026-07-20 14:32 post-close story adds that Delta Electronics (台達電, 2308), ASE Holdings (日月光投控, 3711) and 台光電 all fell more than 2%; Macronix (旺宏, 2337) fell 6%; Compeq (華通, 2313) and Zhen Ding (臻鼎-KY, 4958) fell 7% to 8%; Powertech (力成, 6239) fell 7%; Taiwan Glass (台玻, 1802) and Nan Ya Plastics (南亞, 1303) fell 5% to 6%; against the trend, 台勝科 (3532) rose to limit-up, GlobalWafers (6488) rose 2%, 新代 (7750) rose 7% and Airtac (1590) rose 5% (CNYES#1613950). [F-002]

Citable conclusion: On 2026-07-20 the OTC (TPEx) index closed down 2.62%, the plastics sector index fell 5.06%, the listed electronics sector index fell 0.41% and the financials index fell 0.57%.

• source: CNA #1613945
• corroborating_sources: CNYES #1613477; CNYES #1613950
• confidence: medium
• basis: news_aggregation
• period: single trading session 2026-07-20; the comparison base for the NT$1,000-plus stock count is "the early-July 2026 peak"; the comparison base for five-session average turnover is "the highs in June and July 2026"
• caveat: as stated in media reports; not independently verified by this site with the Taiwan Stock Exchange. Anue CNYES#1613950 states the day's decline as "221.47 points," which does not match the "221.57 points" in CNA#1613945 / CNA#1613772 / STORM#1614020; this card presents both and selects neither. Whether an individual stock's move in that story is intraday or at the close is reproduced as stated in the source and has not been verified stock by stock with the exchange (see §Caveats)

F-003: Anue (cnyes) reported that on 2026-07-20 more than 10 passive-component stocks hit limit-down intraday; Yageo (2327) closed at NT$630, down NT$69 (a 9.87% decline)

Storm Media's 2026-07-20 post-close bulletin gives closing prices and moves: Yageo (the source renders the ticker as "國巨*(2327)") closed at NT$630, down NT$69 (a 9.87% decline); Holy Stone (禾伸堂, 3026) closed at NT$621, down NT$69 (a 10.00% decline); Walsin Technology (華新科, 2492) closed at NT$277, down NT$30.5 (a 9.92% decline); 立敦 (6175) closed at NT$89.1, down NT$9.9 (a 10.00% decline) (STORM#1614020). Anue's 13:02 focus-stocks story that day states: more than 10 passive-component stocks hit limit-down intraday; Yageo "swallowed a second limit-down, reaching NT$630," described as "close to halved" against its NT$1,220 high; Walsin Technology and Holy Stone also hit limit-down; and 立敦 (6175), 信昌電 (6173), 凱美 (2375), 金山電 (8042), 光頡 (3624), 九豪 (6127), 華容 (5328), 立隆電 (2427), 大毅 (2478), 鈺邦 (6449) and 三集瑞-KY (6862) all hit limit-down intraday. Measured against their respective highs, that 2026-07-20 story states Yageo's swing decline at 48%, 華新 (as written in the source) at 57%, 信昌電 and 日電貿 at more than 50%, 立隆電 and 金山電 at 47%, and Holy Stone and 凱美 at about 40% (CNYES#1613628). The same story gives Yageo's flow picture: on 2026-07-17 the three major institutional investor groups sold a combined 5,731 lots and foreign investors sold a combined 12,800 lots over three consecutive sessions; on that same day, 2026-07-17, margin financing fell by 1,808 lots and short-sale balances rose by 748 lots, pushing the short-to-margin ratio from 0.96% to 2.7% (CNYES#1613628). Prior-session context on Yageo: Storm Media's 2026-07-19 report states that Yageo's share price closed at the limit-down price of NT$699 on 2026-07-17 and had fallen more than 40% from its NT$1,220 swing high as of the time of that report (2026-07-19); the same report states that Yageo publicly said the market rumour that a major shareholder had released pledged shares and sold near the highs "has no factual basis" (STORM#1601261). CNA's 2026-07-20 report additionally gives memory and foundry names: Nanya Technology (南亞科) fell 3.67% to NT$381, Winbond (華邦電, 2344) fell 2.58% to NT$151, and Powerchip/PSMC (力積電, 6770) fell 8.56% to NT$63 (CNA#1613945). [F-003]

Citable conclusion: Anue (cnyes) reported that on 2026-07-20 more than 10 passive-component stocks hit limit-down intraday, and Yageo (2327) closed at NT$630, down NT$69 on the day (a 9.87% decline).

• source: STORM #1614020
• source_url: https://www.storm.mg/article/11150404
• corroborating_sources: CNYES #1613628; STORM #1601261; CNA #1613945
• confidence: medium
• basis: news_aggregation
• period: 2026-07-20 close and intraday (specified per sentence); Yageo's flow figures are for 2026-07-17; Yageo's NT$699 limit-down price and the "more than 40%" decline refer to the 2026-07-17 close and to the 2026-07-19 report date
• caveat: as stated in media reports; not independently verified by this site with the Taiwan Stock Exchange or with any company. "Close to halved" and "swing decline of 48%" are the wording of Anue's 2026-07-20 story and stated figures; this card computes no peak-to-trough decline of its own. Yageo's statement that the pledged-share story "has no factual basis" is a company-side clarification, not an official registry verification. The NT$699 close on 2026-07-17 and the NT$630 close on 2026-07-20 belong to different trading sessions and this card does not subtract them (see §Caveats)

F-004: Margin-financing balances fell by nearly NT$27.6 billion in a single day on 2026-07-17, while a separate report of the same date states the balance still stood at NT$587.9 billion, a historically elevated zone

Anue's 10:38 story on 2026-07-20, citing Bloomberg: Taiwanese retail investors unwound leveraged equity positions on 2026-07-17 (which that story calls "last Friday") at the fastest pace since April 2025. Bloomberg-compiled data show that the margin-financing balance used to buy stocks fell by nearly NT$27.6 billion (276億新台幣, about US$896 million) in a single day, the largest single-day drop since the selloff triggered by U.S. President Trump's 2025 "Liberation Day" tariff measures. The same story states the margin-financing balance has fallen 7% from its all-time high to US$18.2 billion, and that Taiwan's weighted index has fallen 10% from its June 2026 high (that story attributes the index decline to concerns about excessive capital expenditure and a weakening earnings outlook raised by TSMC's latest results) (CNYES#1613292). Anue's 05:10 pre-open story that day, by contrast, states: margin financing fell by NT$27.6 billion (276億元) in a single day on 2026-07-17, while the balance still stands at NT$587.9 billion (5,879億元), a historically elevated zone. That story also states that on 2026-07-17 Taiwan stocks plunged 2,953.71 points to close at 42,671.27 and broke below the quarterly moving average, that the quarterly moving average sits at 43,525, that the day's decline was 6.47% with NT$9.6 trillion of market value evaporating, that the index fell 2,683.34 points over that week (a 5.92% weekly decline) with NT$8.67 trillion of listed market value evaporating over the week, that on 2026-07-17 foreign investors net sold NT$189.039 billion (1,890.39億元) and proprietary desks net sold NT$82.179 billion (821.79億元) — both the largest net-sell amounts on record — and that TSMC absorbed more than 44,000 lots of selling worth about NT$104 billion (1,040億元) that day while UMC and PSMC together saw 160,000 lots sold (CNYES#1612552). Returning to flows on 2026-07-20 itself, CNA states that the three major institutional investor groups were net buyers of NT$500 million (5億元) in aggregate, comprising proprietary desks net selling NT$8.064 billion (80.64億元), investment trusts net buying NT$14.648 billion (146.48億元), and foreign and mainland Chinese investors net selling NT$6.084 billion (60.84億元) (CNA#1614087). Anue's 10:29 FX story that day further lists, among the negatives cited by President Securities Investment Advisory, that foreign investors' net short futures position reached 86,000 contracts, an all-time high; the same story states the Taiwan dollar opened on 2026-07-20 at 32.28 (0.8 cents stronger) before turning weaker, with an intraday low of 32.432 (1.44 jiao weaker), and that among Asian currencies the Taiwan dollar's decline of more than 0.4% was the largest that day, with the Thai baht down about 0.15% and the Korean won up more than 0.3% (CNYES#1613298). [F-004]

Citable conclusion: Per Bloomberg-compiled data, Taiwan's margin-financing balance for stock purchases fell by nearly NT$27.6 billion (about US$896 million) in a single day on 2026-07-17.

• source: CNYES #1613292
• corroborating_sources: CNYES #1612552; CNA #1614087; CNYES #1613298
• confidence: medium
• basis: news_aggregation
• period: the single-day margin decline and the foreign/proprietary net selling are for 2026-07-17; the comparison bases for "7% from its all-time high" and "10% from its June 2026 high" are stated in the sentences themselves; institutional flows and the Taiwan dollar rate are for 2026-07-20
• caveat: as stated in media reports; not independently verified by this site with the Taiwan Stock Exchange or the central bank. "Fell by nearly NT$27.6 billion in a single day on 2026-07-17" (Bloomberg-compiled) and "the balance still stands at NT$587.9 billion, a historically elevated zone" (Anue pre-open story) come from different sources with different calibrations, and whether those calibrations are consistent has not been verified by this site; this card therefore keeps them in separate sentences and does not subtract or merge them. "Foreign net short futures position of 86,000 contracts, an all-time high" is as listed by President Securities Investment Advisory. The attribution to TSMC's results is Bloomberg's narrative in that story, not a determination by this site (see §Caveats)

F-005: President Securities Investment Advisory chairman Li Fang-kuo attributed the 2026-07-17 plunge to Korean deleveraging and said "there is in fact no fire"

CNA report of 2026-07-19: Li Fang-kuo, chairman of President Securities Investment Advisory, said the culprit behind the 2026-07-17 plunge in Taiwan stocks originated in "deleveraging in the Korean stock market" — Korea's two largest index heavyweights, Samsung at 28% weight and SK Hynix at 24%, together carry more than half the Korean market's weight; after Korea launched multiple ETFs built around those two names from late May 2026, the leverage effect pushed the two stocks' turnover to more than 70% of the entire Korean market at one point; after Korean equities set an all-time high in June 2026, the deleveraging selloff was severe; the decline in SK Hynix's ADR first hit the Philadelphia Semiconductor Index, and the dominoes then spread to the Taiwanese and Japanese markets. Li also said it was "entirely a flow-driven deleveraging that turned into a cascade of forced selling ... in fact there is no fire." The same report states that veteran securities analyst Tsai Ming-han said "TSMC is not the murderer," describing the results, full-year outlook and capital expenditure presented at its earnings call as all better than market expectations, and saying TSMC's more than 7% plunge and NT$180 drop on 2026-07-17 was purely because it "really rose too much in the first half," compounded by geopolitics and the sharp fall in U.S. semiconductor stocks. That report further states that on 2026-07-17 Taiwan stocks fell 2,953.71 points for the largest single-day point drop on record, closed at the day's low of 42,671.27 and broke below the quarterly moving average at 43,525, that foreign investors' futures short position swelled to an all-time high of 86,000 contracts, and gives U.S. closing levels for 2026-07-17: the Dow down 406.55 points (0.77%) at 52,146.42, the S&P 500 down 76.08 points (1.01%) at 7,457.69, the Nasdaq down 361.70 points (1.4%) at 25,520.25, and the Philadelphia Semiconductor Index down 193.612 points (1.63%) at 11,673.891 (CNA#1600746). On the Korean side, Anue's 07:50 story on 2026-07-20 cites Korean official statistics: cumulative forced liquidations in July 2026 reached KRW 344.2 billion (3,442億韓元, about NT$7.85 billion), with 2026-07-09 alone accounting for KRW 144.2 billion; more than 1.2 million leveraged retail accounts market-wide hit margin calls, of which roughly 320,000 to 360,000 were fully force-liquidated by brokerages; between July 1 and July 13, 2026, SK Hynix retraced nearly 40% from its high and Samsung Electronics fell nearly 30%; retail brokerage account margin balances shrank by about KRW 30 trillion to their lowest since February 2026, with the margin-call trigger rate rising to about 5% (CNYES#1612812). A same-day signal on the Taiwan side: CNA states that on 2026-07-20 the Korean market fell more than 4% at one point, with Samsung and SK Hynix down more than 3% intraday (CNA#1613451). [F-005]

Citable conclusion: President Securities Investment Advisory chairman Li Fang-kuo said the culprit behind the 2026-07-17 plunge in Taiwan stocks originated in deleveraging in the Korean stock market and that "in fact there is no fire."

• source: CNA #1600746
• corroborating_sources: CNYES #1612812; CNA #1613451
• confidence: medium
• basis: news_aggregation
• period: the Li Fang-kuo and Tsai Ming-han remarks are from CNA's 2026-07-19 report; the Korean forced-liquidation statistics are cumulative for July 2026 and for the single day 2026-07-09; the SK Hynix and Samsung declines from their highs are for July 1 to July 13, 2026; the Korean market's decline on the day is for 2026-07-20
• caveat: the remarks by Li Fang-kuo and Tsai Ming-han are the personal views and judgements of those individuals and institutions, not official statistics and not determinations by this site; they establish no causal conclusion and endorse no investment judgement. The Korean-side figures are on Korean market calibrations (won-denominated, Korean brokerage accounts) and must not be placed in the same sentence as, or added to, Taiwanese figures. Anue describes them as Korean official statistics; this site has not verified them with the Korean regulator (see §Caveats)

F-006: A Cathay Financial survey released on 2026-07-20 found that among 14,008 self-completed member/customer questionnaires, a combined 57% expect the second-half TAIEX high to be above 50,000

CNA reporter Lu Yen-tzu, 2026-07-20 09:46: Cathay Financial Holdings released its July national economic confidence survey that day. A combined 57% of respondents said the TAIEX high in the second half of 2026 would be above 50,000 points (27% putting it between 50,000 and 52,000, 20% between 52,000 and 54,000, and 10% expecting above 54,000). On the second-half low, 37% expected support to hold above 44,000 while 26% expected it to fall below 40,000. The survey field period ran from 2026-07-01 to 2026-07-07; questionnaires were emailed to members of Cathay Life's official website and customers of Cathay United Bank, and 14,008 valid responses were collected (CNA#1613135). Positioning in time: that field period (2026-07-01 to 07-07) precedes both the 2,953.71-point plunge of 2026-07-17 (CNYES#1612552) and the 2026-07-20 session — this is a chronological note by Shen Guan placing the field period alongside the market dates, not a causal statement in the CNA or Cathay Financial text. [F-006]

Citable conclusion: A Cathay Financial survey released on 2026-07-20 found that among 14,008 self-completed member/customer questionnaires, a combined 57% expect the second-half 2026 TAIEX high to be above 50,000 points.

• source: CNA #1613135
• corroborating_sources: CNYES #1612552
• confidence: medium
• basis: news_aggregation
• period: field period 2026-07-01 to 2026-07-07; release date 2026-07-20
• caveat: this is not a randomly sampled national opinion poll — the frame is a self-completed email questionnaire sent to members of Cathay Life's official website and customers of Cathay United Bank (14,008 valid responses), and the result represents that sample only; it must not be broadened into "the Taiwanese public" or "a majority of citizens." The field period precedes the 2026-07-17 plunge and does not reflect post-plunge expectations. As stated in CNA's report; not independently verified by this site (see §Caveats)

Cross-source discrepancy pins (CHALLENGE — three side-by-side corrections)

Cross-checking the sources surfaced three inconsistent formulations. This card presents all three side by side and never silently picks one:

1. Whether UMC was "limit-down": the Storm Media seed article's headline says UMC "was slammed to limit-down," yet the body of the same article lists UMC among stocks "close to limit-down," closing at NT$130, down 9.72%, on volume of 297,435 lots (STORM#1614020). CNA explicitly states UMC "was sold down to the limit-down price of NT$130 intraday" (CNA#1613945, CNA#1613772, CNA#1613451). Corrected formulation: it touched the limit-down price of NT$130 intraday and closed at NT$130, down 9.72%. The calculation of that stock's actual limit-down price for the day has not been verified by this site. A related discrepancy: CNA states that Yageo, Holy Stone and Walsin Technology all "hit limit-down together" on 2026-07-20 (CNA#1613945), while the closing declines stated by Storm Media are 9.87% for Yageo, 10.00% for Holy Stone and 9.92% for Walsin Technology (STORM#1614020) — this card presents both and has not verified which is correct.
2. The day's decline: 221.47 vs 221.57: Anue's 2026-07-20 post-close story states the decline as "221.47 points" (CNYES#1613950), while CNA (CNA#1613945, CNA#1613772) and Storm Media (STORM#1614020) all state "221.57 points." This card uses "221.57 points" in the body while flagging Anue's "221.47 points" at the same place, and does not adjudicate which is correct.
3. Walsin Technology's ticker: 2492 vs 2392: Anue CNYES#1613628 renders Walsin Technology as "(2492-TW)," while the same outlet's CNYES#1613950 renders it as "(2392-TW)." Checked against this site's internal Taiwan ticker reference table (`tw_listed_registry`, confidence 0.95): 2492 = 華新科技 (Walsin Technology) and 2392 = 正崴精密 (a different company). This card uses 2492 and flags the discrepancy. That reference table is this site's internally ingested Taiwan ticker mapping on a TWSE-listed basis, not a real-time official query to the Taiwan Stock Exchange. In addition, 立敦 (6175), 信昌電 (6173) and 昇達科 (3491) are not contained in that table, so for those three names this card writes only what the reports state and claims no verification.

§Caveats (source limits / consolidated once)

• Official anchors: official_count_verified=0, official_count_raw=0, official_attribution_unverified_count=0. Every index level, point move, percentage change, turnover figure, share volume, institutional net buy/sell number, margin-financing balance, exchange rate and market-capitalisation figure in this card is as stated in the same-day or respective-date reports of the outlets listed above. This site has not independently verified them with the Taiwan Stock Exchange, the Taipei Exchange (櫃檯買賣中心), the central bank or any listed company, and they do not constitute an officially verified endorsement.
• Time bases / comparison bases: 2026-07-20 is a single-session calibration (open / intraday / close specified in each sentence). The 2026-07-17 plunge, the foreign and proprietary net selling, the single-day margin decline and Yageo's flow figures are all on that date's calibration and are labelled as such in the sentences. The comparison bases for "7% from its all-time high," "10% from its June 2026 high," "from 53 at the early-July 2026 peak to 44," and "roughly NT$1.5 trillion for the five-session average at the highs in June and July 2026" are attached to their sentences. The Cathay Financial survey field period is 2026-07-01 to 07-07.
• No merging, no computation: this card performs no subtraction, addition, currency conversion, or derivation of ratios or peak-to-trough declines. In particular — the margin figures "fell by nearly NT$27.6 billion in a single day on 2026-07-17" (Bloomberg-compiled, CNYES#1613292) and "the balance still stands at NT$587.9 billion, a historically elevated zone" (Anue pre-open story, CNYES#1612552) come from different sources with different calibrations whose consistency this site has not verified; Yageo's NT$699 close on 2026-07-17 and NT$630 close on 2026-07-20 belong to different trading sessions; and the Korean-side figures (won-denominated, Korean brokerage accounts) belong to a different market from the Taiwanese figures. All three pairs are kept in separate sentences with their own attributions; computing differences or merging them into a single reading is prohibited.
• Attribution of views: the judgements of Huang Wen-ching (president of Taishin Securities Investment Advisory), Li Fang-kuo (chairman of President Securities Investment Advisory), Tsai Ming-han (veteran securities analyst), SinoPac Securities Investment Service and President Securities Investment Advisory, and Yageo's clarification regarding "a major shareholder releasing pledged shares and selling near the highs," are all views of those individuals or institutions, or company-side clarifications. They are not verified facts, not endorsements of forecasts, and not investment advice.
• Editorial inferences flagged: attributions such as "index-versus-breadth divergence," "heavyweights held up the index" and "a continuation day of deleveraging selling" are editorial inferences by Shen Guan from comparing the index and group figures and the weekday stated in the reports (Anue CNYES#1613628 refers to 2026-07-17 as "last Friday," making 2026-07-20 the first session thereafter). They are not verbatim statements in any source. Each source states only its own figures and performs no decomposition of index contribution.
• Sampling calibration: Cathay Financial's July survey is a self-completed email questionnaire sample of members of Cathay Life's official website and customers of Cathay United Bank (14,008 valid responses), not a randomly sampled national poll. Broadening it to the Taiwanese public as a whole is prohibited.
• Ticker-verification calibration (scope-limitation statement): the only item this card actually checked against this site's internal `tw_listed_registry` reference table (TWSE-listed basis, confidence 0.95) is the single cross-source discrepancy "Walsin Technology 2492 vs 2392." That table is this site's internally ingested mapping and is not a real-time official query to the Taiwan Stock Exchange. Every other ticker in this card — including 立敦 (6175), 信昌電 (6173) and 昇達科 (3491), which are not contained in that table, as well as all names not individually looked up — is transcribed as stated in the reports and has not been checked by this site, and must not be read as name-by-name verification by this site.
• No Wikidata Q attached: this card attaches no Wikidata Q identifier (no registry verification was performed on this shift; when in doubt, leave it out).

Internal citation chain (connecting to published cards)

• REVISE / CORROBORATE → ANK-2026-07-02-001 *"Taiwan's AI Rally Meets Its 'Raging Bull, Gray Rhino' Moment: The Philadelphia Semiconductor Index Logs Two Single-Day Plunges in a Week (5.29% on June 26, 6.27% on July 1), TSMC's ADR Falls 6.9%, Taiex Futures Drop 867 Points in the Night Session; After a Record 17,162-Point First-Half Surge, Fubon Names High Leverage the Top Risk for Taiwan Stocks — Margin Balance Up About 70% From End-2025 to NT$583.9 Billion, With Korean Leverage as the Global Bull Market's 'Canary'"*: that card records Fubon naming high leverage the top risk for Taiwan stocks, a margin-financing balance of NT$583.9 billion up about 70% from end-2025, and Korean leverage being called the global bull market's "canary." The near-NT$27.6 billion single-day margin decline on 2026-07-17 (Bloomberg-compiled, CNYES#1613292) and the Korean-deleveraging transmission argument (CNA#1600746) recorded in this card are the subsequent development of exactly that risk path. The margin-balance figures in the two cards (NT$583.9 billion in that card versus the NT$587.9 billion stated by CNYES#1612552 in this card) belong to different dates and different sources; they are presented side by side only, and this card computes no difference and asserts no increase or decrease.
• CORROBORATE → ANK-2026-07-18-004 *"Taiwan Stocks Fell 1,426.01 Points Week-on-Week; Total Listed Market Cap Down NT$4.6225 Trillion vs Prior Week (as of the July 9, 2026 close; per CNA July 13, 2026 report, not independently verified by this site with the TWSE)"*: that card records "the plastics sector index led decliners at -9.20% for the week" (weekly calibration, as of the 2026-07-09 close, per CNA's 2026-07-13 report). This card records the plastics index falling 5.06% on 2026-07-20 (single-session calibration, CNA#1613945). The two belong to different calibrations (weekly versus single session) and different dates; they are presented side by side only, never added together, and no cumulative decline is derived.
• CONTEXTUALIZE → ANK-2026-07-13-003 *"Formosa Petrochemical Corporation (TWSE:6505) June 2026 Consolidated Revenue NT$63,683.34 Million…"*: the fundamentals-side predecessor to this card's record that Formosa Petrochemical (台塑化, 6505) closed at NT$77.7 on 2026-07-20, down NT$3.6 (a 4.43% decline), on volume of 96,627 lots (STORM#1614020). (That card is on a company monthly-revenue calibration and this card on a share-price calibration; the two are never placed in the same sentence.)
• CONTEXTUALIZE → ANK-2026-07-08-001 *"Memory Cycle, Chapter Five — the 'Taiwan Revenue and Capital-Action Chapter': Winbond's June Self-Tallied Revenue of NT$20.597 Billion and Macronix's NT$6.956 Billion Both Set All-Time Highs…"*: the revenue-side predecessor to this card's record of memory names on the price side on 2026-07-20 (Winbond down 2.58% at NT$151 and PSMC down 8.56% at NT$63 per CNA#1613945; Macronix down 6% per CNYES#1613950). (That card is on a company self-tallied monthly revenue calibration and this card on a share-price calibration; the two are never placed in the same sentence.)

FAQ

Q: Taiwan stocks fell only 0.52% on 2026-07-20 — does that mean the market has stabilized?

It cannot be read that way. Per the 2026-07-20 media reports, the weighted index did close at 42,449.70, down 221.57 points (a 0.52% decline) (CNA#1613945). But on that same session the OTC (TPEx) index closed down 2.62% and the plastics sector index fell 5.06% (CNA#1613945); the index traded as high as 43,084.51 and as low as 41,967.75 (CNA#1613451); Anue reported an intraday swing of 1,117 points, seven NT$1,000-plus stocks hitting limit-down intraday and the count of such stocks falling from 53 in early July 2026 to 44 (CNYES#1613477); and more than 10 passive-component stocks hit limit-down intraday (CNYES#1613628). On the same day TSMC (2330) closed at NT$2,320, up 1.31% (CNA#1613945). "Index-versus-breadth divergence" is an editorial inference by Shen Guan from comparing those figures, not a verbatim statement in any source; all figures are as stated in media reports and have not been verified by this site with the exchange.

Q: Was UMC (2303) actually limit-down on 2026-07-20?

The correct formulation is "on 2026-07-20 it touched the limit-down price of NT$130 intraday and closed at NT$130, down NT$14 (a 9.72% decline)." CNA states UMC was sold down to the limit-down price of NT$130 intraday on volume above 290,000 lots (CNA#1613772, CNA#1613451). Storm Media's post-close bulletin says "limit-down" in its headline, but the body of the same article lists UMC among stocks "close to limit-down," closing at NT$130, down 9.72%, on volume of 297,435 lots (STORM#1614020). Because the calculation of that stock's actual limit-down price for the day has not been verified by this site, we do not copy the headline's "limit-down" across as a closing fact. A related discrepancy: CNA states Yageo, Holy Stone and Walsin Technology all "hit limit-down together" on 2026-07-20, while the closing declines stated by Storm Media are 9.87%, 10.00% and 9.92% respectively. This card presents both and adjudicates neither.

Q: Is Taiwan's deleveraging over?

This site cannot determine that; it can only lay out what each source states. Anue, citing Bloomberg, reports that on 2026-07-17 the margin-financing balance used to buy stocks fell by nearly NT$27.6 billion (about US$896 million) in a single day, which that story calls the largest single-day drop since the selloff triggered by the 2025 "Liberation Day" tariff measures, and states that the balance has fallen 7% from its all-time high to US$18.2 billion (CNYES#1613292). A separate Anue pre-open story states that margin financing fell by NT$27.6 billion in a single day on 2026-07-17 but that the balance still stands at NT$587.9 billion, a historically elevated zone (CNYES#1612552). These two figures come from different sources with different calibrations whose consistency this site has not verified, so this card keeps them in separate sentences and neither subtracts nor merges them into an inference. Flows on 2026-07-20 itself: the three major institutional investor groups were net buyers of NT$500 million in aggregate (proprietary desks net selling NT$8.064 billion, investment trusts net buying NT$14.648 billion, foreign and mainland Chinese investors net selling NT$6.084 billion) (CNA#1614087). President Securities Investment Advisory separately listed foreign investors' net short futures position reaching an all-time high of 86,000 contracts (CNYES#1613298), which is that institution's stated view.

Sources

1. [Storm Media / seed article] Post-close bulletin — Taiwan stocks swing and close down 221 points | STORM#1614020 — 2026-07-20. https://www.storm.mg/article/11150404
2. [Storm Media] Morning bulletin (10:08) | STORM#1613365 — 2026-07-20.
3. [Storm Media] Yageo-related report (13:33) | STORM#1601261 — 2026-07-19.
4. [CNA] "Deleveraging effect spreads; Taiwan stocks swing more than 1,100 points and close at 42,449" (reporter Wu Chia-hao, 14:49) | CNA#1613945 — 2026-07-20.
5. [CNA] Taiwan market intraday report (reporter Wu Chia-hao, 13:51) | CNA#1613772 — 2026-07-20.
6. [CNA] Taiwan market intraday report (reporter Wu Chia-hao, 11:21) | CNA#1613451 — 2026-07-20.
7. [CNA] "Three major institutional investor groups net buy NT$500 million of Taiwan stocks" (Taipei, 15:20) | CNA#1614087 — 2026-07-20.
8. [CNA] "Taiwan stocks plunge below the quarterly moving average, facing a record foreign futures short position" (reporter Wu Chia-hao) | CNA#1600746 — 2026-07-19.
9. [CNA] "Cathay Financial survey: 57% expect Taiwan stocks to reach 50,000 in the second half" (reporter Lu Yen-tzu, 09:46) | CNA#1613135 — 2026-07-20.
10. [Anue/cnyes] Taiwan market post-close report (14:32) | CNYES#1613950 — 2026-07-20.
11. [Anue] Focus stocks — passive components (13:02) | CNYES#1613628 — 2026-07-20.
12. [Anue] Intraday report on NT$1,000-plus stocks (11:12) | CNYES#1613477 — 2026-07-20.
13. [Anue] Citing Bloomberg — Taiwanese retail investors deleverage (10:38) | CNYES#1613292 — 2026-07-20.
14. [Anue] Taiwan market pre-open briefing (05:10) | CNYES#1612552 — 2026-07-20.
15. [Anue] Taiwan dollar report (10:29) | CNYES#1613298 — 2026-07-20.
16. [Anue] Korean forced-liquidation statistics (07:50) | CNYES#1612812 — 2026-07-20.

• Seed article: Storm Media, post-close bulletin — Taiwan stocks swing and close down 221 points (2026-07-20 15:22 JST) | STORM#1614020 | https://www.storm.mg/article/11150404
• Storm Media, morning bulletin (2026-07-20 10:08) | STORM#1613365
• Storm Media, Yageo-related report (2026-07-19 13:33) | STORM#1601261
• CNA, "Deleveraging effect spreads; Taiwan stocks swing more than 1,100 points and close at 42,449" (reporter Wu Chia-hao, 2026-07-20 14:49) | CNA#1613945
• CNA, Taiwan market intraday report (reporter Wu Chia-hao, 2026-07-20 13:51) | CNA#1613772
• CNA, Taiwan market intraday report (reporter Wu Chia-hao, 2026-07-20 11:21) | CNA#1613451
• CNA, "Three major institutional investor groups net buy NT$500 million of Taiwan stocks" (Taipei, 2026-07-20 15:20) | CNA#1614087
• CNA, "Taiwan stocks plunge below the quarterly moving average, facing a record foreign futures short position" (reporter Wu Chia-hao, 2026-07-19) | CNA#1600746
• CNA, "Cathay Financial survey: 57% expect Taiwan stocks to reach 50,000 in the second half" (reporter Lu Yen-tzu, 2026-07-20 09:46) | CNA#1613135
• Anue (cnyes), Taiwan market post-close report (2026-07-20 14:32) | CNYES#1613950
• Anue, focus stocks — passive components (2026-07-20 13:02) | CNYES#1613628
• Anue, intraday report on NT$1,000-plus stocks (2026-07-20 11:12) | CNYES#1613477
• Anue, citing Bloomberg — Taiwanese retail investors deleverage (2026-07-20 10:38) | CNYES#1613292
• Anue, Taiwan market pre-open briefing (2026-07-20 05:10) | CNYES#1612552
• Anue, Taiwan dollar report (2026-07-20 10:29) | CNYES#1613298
• Anue, Korean forced-liquidation statistics (2026-07-20 07:50) | CNYES#1612812
• Internal citations (published ANK cards): ANK-2026-07-02-001 *"Taiwan's AI Rally Meets Its 'Raging Bull, Gray Rhino' Moment… Fubon Names High Leverage the Top Risk for Taiwan Stocks"*; ANK-2026-07-18-004 *"Taiwan Stocks Fell 1,426.01 Points Week-on-Week; Total Listed Market Cap Down NT$4.6225 Trillion vs Prior Week…"*; ANK-2026-07-13-003 *"Formosa Petrochemical Corporation (TWSE:6505) June 2026 Consolidated Revenue NT$63,683.34 Million…"*; ANK-2026-07-08-001 *"Memory Cycle, Chapter Five — the 'Taiwan Revenue and Capital-Action Chapter'…"*

Anti-fabrication statement: This card carries zero verified official anchors (official_count_verified=0, official_count_raw=0, official_attribution_unverified_count=0); all figures are as stated in the media reports listed above and have not been independently verified by this site with the Taiwan Stock Exchange or with any company. No figure absent from the source text was generated; no ratio, difference or peak-to-trough decline was derived; no cross-source pairing was used to manufacture a comparison. Remarks by analysts and executives are labelled throughout as the views of those individuals or institutions, and company statements as company-side clarifications. Three cross-source discrepancies are pinned side by side rather than silently resolved. No Wikidata Q is attached (no registry verification was performed).

Schema.org (JSON-LD)

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  "@context": "https://schema.org",
  "@type": "NewsArticle",
  "headline": "Taiwan's TAIEX Closed at 42,449.70 on July 20, 2026, Down Just 0.52%, While the Same Day's OTC (TPEx) Index Fell 2.62%",
  "datePublished": "2026-07-20",
  "inLanguage": "en",
  "author": {"@type": "Person", "name": "沈觀"},
  "publisher": {"@type": "Organization", "name": "AI News"},
  "isBasedOn": {
    "@type": "NewsArticle",
    "headline": "《盤後快訊》台股震盪收跌221點",
    "url": "https://www.storm.mg/article/11150404",
    "datePublished": "2026-07-20"
  },
  "about": [
    {"@type": "Thing", "name": "TAIEX weighted index"},
    {"@type": "Thing", "name": "Taipei Exchange (TPEx) OTC index"},
    {"@type": "Thing", "name": "Passive component sector"},
    {"@type": "Thing", "name": "Margin financing and deleveraging"}
  ]
}