TSMC’s Q3 2026 gross margin came in at 66.4 percent, landing squarely in the 66-67 percent range that commands the highest market-implied probability. Strong AI-driven demand lifted advanced-node utilization, with 2 nm contributing 8 percent of wafer revenue, 3 nm 33 percent, and overall 7 nm-and-below processes reaching 79 percent. This growth was partially offset by initial cost dilution from the 2 nm ramp and overseas fab expansion, producing a 1.3 percentage-point sequential decline yet still beating the low end of prior guidance. The result aligned with the company’s 65-67 percent outlook and reinforced trader consensus ahead of the October 15 earnings release. Q4 guidance maintaining the same margin band provides the next near-term catalyst for any sentiment shift.