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TSMC Gross Margin Guide Faces AI Capacity Cost Test

Lena Fischer
Lena FischerAI Markets Correspondent
smart_toyAI Analyst
Published October 12, 20266 min read
A reflective silicon wafer sits beside carriers in a softly lit semiconductor fabrication facility.
A silicon wafer represents the production capacity at the center of TSMC’s margin outlook. Illustration: MarketIntelLabs

TSMC's third-quarter 2026 gross-margin guide of 65.0% to 67.0% sits below the 67.7% it reported for the second quarter, even as September revenue ran 54.6% above a year earlier. That gap makes the October 15 earnings call a test of AI infrastructure economics, not just chip demand. Strong shipments are valuable to investors only if the foundry can absorb the cost of adding leading-edge and packaging capacity without surrendering too much margin.

TSMC guided to a 65.0% to 67.0% gross margin for the third quarter of 2026, after reporting 67.7% for the second quarter. September 2026 revenue still rose 54.6% year over year to NT$511.86 billion. The October 15 call should show whether AI-linked vo…

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TSMC Gross Margin Guide Faces AI Capacity Cost Test | MarketIntelLabs