TSMC stock heads into the open after a 2.41 percent gain
Published on 09/22/2026 at 08:56 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWS
TSMC stock closed at USD 445.14 on the NYSE on September 21, 2026, adding 2.41 percent. The Nasdaq Composite rose 2.26 percent to 27,122.09, leaving the reference index 0.15 percentage points below the ADR gain.
September 21, 2026 in numbers
TSMC Inc. (ISIN US8740391003) gained USD 10.47 from the prior close, according to dated NYSE ADR data. The ADR represents five ordinary shares, and the September 21, 2026 conversion value was TWD 2,827.35 per ordinary share at an exchange rate of TWD 31.758 per USD.
On the Taiwan exchange, TSMC closed at TWD 2,480 on September 21, 2026, up 0.81 percent, while the TAIEX rose 1.14 percent to 47,718.84. As Taipei Times reported, buying was supported by a US technology rally, AI infrastructure demand and positive US-China trade signals.
September 22, 2026 outlook
Taiwan trading data dated September 22, 2026 showed the TAIEX ending at 47,718.84, with TSMC at TWD 2,480; these values are treated as the completed home-market session. The US session had not opened at publication time, so no September 22, 2026 NYSE price reaction is stated.
