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U.S. Commerce Secretary Howard Lutnick speaks at the G20 Innovation Ministers Meeting in Chapel Hill, North Carolina, September 2026
Photo: Korea Herald / Yonhap

Taiwan Semiconductor Stock Falls 3.26% on Chip Tariffs

TradingKey2 min read6 sources

Why is Taiwan Semiconductor stock down today?

Taiwan Semiconductor (TSM) stock fell 3.26% to $419 at Monday's open after Commerce Secretary Lutnick's pledge to impose chip-specific tariffs on non-US chip makers renewed fear across the semiconductor sector.

Key numbers

TSM opening decline (Sept 14)−3.26%to ~$419 from $433 prior close
Philadelphia Semiconductor Index−2.18%−247 pts on Sept 14
TSMC Q2 2026 revenue$40.2B+36% YoY
TSM ex-dividend amount$0.87 per shareex-date Sept 16, pay Oct 8
TSM average analyst price target$547.45+30% vs Sept 14 opening price (per [1])

What happened

Taiwan Semiconductor (TSM) stock fell 3.26% to $419 at Monday's open after Commerce Secretary Lutnick's pledge to impose chip-specific tariffs on non-US chip makers renewed fear across the semiconductor sector. On September 2–3, Lutnick said companies manufacturing chips in the US would get tariff relief while all others face new duties — a direct threat to TSMC, whose fabs are almost entirely in Taiwan. The Philadelphia Semiconductor Index shed 2.18%, with Nvidia off 2.7%, Broadcom down roughly 4–5%, and Micron shedding 6.25% on the day. Selling also picked up as investors exited ahead of TSM's September 16 ex-dividend date, when shares begin trading without entitlement to the quarterly $0.87-per-share payout.

Why it matters

Taiwan Semiconductor makes roughly 90% of the world's most advanced chips, so US tariffs on foreign chipmakers would raise the cost of nearly every tech product — from smartphones to AI data-center servers. TSMC is in the middle of a $265 billion US factory expansion in Arizona, yet the majority of its output still comes from Taiwan, leaving it directly in the tariff crosshairs. For investors, the deeper concern is prolonged uncertainty: chip buyers cannot plan orders when they do not know the final tariff rate or timeline.

Who this affects

Marketbearish
Medium impact
All chip stocks fell Monday; SOX index shed 2.18%.
Companybearish
Medium impact
TSM shares fell 3.26% at open, hurting shareholders short-term.
Competitorsbearish
Medium impact
Samsung, SK Hynix, and ASML face the same tariff threat.
Industrybearish
High impact
Tariff uncertainty slows chip supply-chain planning industry-wide.

Taiwan Semiconductor vs. Nvidia, Intel, AMD

Taiwan SemiconductorTSM$1.95T−3.3%+34%19x
NvidiaNVDA$5.13T−2.7%—18x
IntelINTC~$503B−4.5%—43x
AMDAMD$841.6B−4.1%——

As of 2026-09-14

How we got here

  1. Lutnick outlines chip-tariff framework at G20 Innovation Ministers Meeting, Chapel Hill.

  2. Carveout structure confirmed: US manufacturers exempt; Samsung and SK Hynix named at risk.

  3. TSM opens −3.26%; SOX falls 2.18%; sector-wide chip selloff accelerates.

  4. TSM ex-dividend date: $0.87/share quarterly dividend; shares trade ex-div.

  5. TSMC Q3 2026 earnings call — next major revenue and guidance read (per).

What to watch

  • Official US semiconductor tariff announcement — rate, scope, and timelineQ4 2026
  • TSMC Q3 2026 earnings — revenue guidance against tariff headwinds2026-10-15
  • TSM price reaction after September 16 ex-dividend date passes2026-09-16

Educational content only. Not investment advice.

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