TSMC (台積電) held its earnings call on July 16, 2026, delivering upgraded guidance across multiple metrics. Yet the very next trading day, the stock opened weak and kept sliding. According to CNYES, the shares "opened down nearly 4%, with the decline continuously widening, and after midday plunged over 6%, touching NT$2,310, a one-month low, contributing 1,200 points to the broader index decline" (E1). TechNews reported the session ended even worse: the stock "tumbled NT$180, marking the largest single-day point drop in its history, closing at NT$2,290, breaking through the quarterly line of NT$2,325" (E9). The sell-off came despite — not because of — the prior day's earnings disclosures, based on the timeline both outlets described.
The two outlets measured the damage at different points in the trading session, but both point to a multi-trillion New Taiwan Dollar loss. CNYES calculated the intraday drop as TSMC's market capitalization falling "from yesterday's NT$64.05 trillion to about NT$60.1 trillion, a single-day intraday market value evaporation of nearly NT$4 trillion" (E2). By the closing bell, TechNews put the figure lower still, reporting the stock "closed at today's lowest point of NT$2,290, down NT$180, with market value shrinking by NT$4.66 trillion to NT$59.38 trillion, affecting the broader index by about 1,430 points" (E10).
The call itself, per both sources, was framed around record results and an upgraded outlook. TechNews reported that "second-quarter operations delivered a strong report card, with revenue and profit both hitting record highs, gross margin reaching 67.7%, better than expected, and earnings per share of NT$27.25" (E11). Looking ahead, TSMC "raised its 2026 U.S. dollar revenue growth guidance from over 30% to over 40%" (E3), and TechNews added that the company "expects third-quarter revenue of $44.6 billion to $45.8 billion, up 12% quarter-over-quarter, with full-year U.S. dollar revenue growth slightly above 40%" (E12).
Alongside the upbeat revenue outlook, TSMC pointed to a specific source of margin dilution ahead. According to CNYES, the company "estimates that 2-nanometer volume ramp-up will dilute second-half 2026 gross margin by about 3 to 4 percentage points, while overseas fabs could further impact it by 2 to 3 percentage points" (E6). This guidance was disclosed directly at the July 16 call, the same session in which the company otherwise raised its growth targets.
The contrast between the reported quarter and the guided quarter appears to be a central data point. CNYES reported that TSMC's "second-quarter gross margin reached 67.7%, operating margin 60.3%, both exceeding the high end of the company's financial guidance" (E5). But for the third quarter, TechNews reported TSMC "expects overall gross margin of about 65% to 67%. This failed to reach the market-expected level of 70%, and would even be 1.7 percentage points lower than the second quarter" (E13).
| Metric | Q2 2026 | Q3 2026 Guidance |
|---|---|---|
| Gross margin | 67.7% (E5, E11) | 65%–67%, down 1.7pp vs Q2, market had expected 70% (E13) |
| Operating margin | 60.3% (E5) | — |
| EPS | NT$27.25 (E11) | — |
| Revenue guidance | — | $44.6B–$45.8B, +12% QoQ (E12) |
TSMC's guidance also included concrete capital commitments. CNYES reported the company "raised full-year capital expenditure to $60 billion to $64 billion, reflecting the company's optimism about continued strength in AI demand" (E4). On overseas expansion, CNYES reported TSMC "announced an additional $100 billion investment in Arizona, bringing its total U.S. investment to $265 billion" (E7).
Sell-side analysts and trading activity moved in different directions. CNYES reported that "multiple brokerages raised profit estimates and target prices after the earnings call, with target prices ranging between NT$3,000 and NT$4,200, with most maintaining a buy rating" (E8). Yet trading data told a different story about sentiment on the floor: TechNews reported, citing the Taiwan Stock Exchange, that TSMC's "trading value reached NT$175.225 billion today, with intraday odd-lot trading value surging to NT$48.558 billion, both leading the Taiwan market, with intraday odd-lot trading value increasing 11-fold" (E14).
The reported figures show a split between the earnings-call narrative and the following day's trading. TSMC disclosed record Q2 results — 67.7% gross margin and NT$27.25 EPS (E5, E11) — alongside raised 2026 revenue growth guidance to over 40% and expanded capex to $60–64 billion (E3, E4). At the same time, it flagged Q3 gross margin guidance of 65%–67%, below the market's expected 70% and 1.7 points under Q2 (E13), plus a 3–4 point margin drag from 2nm ramp-up and a further 2–3 points from overseas fabs (E6). Sell-side targets of NT$3,000–4,200 with mostly buy ratings (E8) stood in contrast to the stock's record 180-point single-day drop and break of its quarterly line (E9), a nearly NT$4 trillion to NT$4.66 trillion market-value swing depending on measurement point (E2, E10), and an 11-fold surge in odd-lot trading value (E14) — data points that, taken together, describe a session where guided margin pressure appears to have outweighed guided revenue growth in market reaction.
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