TSM's biggest one-day moves since 2006, and what happened next
Describes the past; not a signal. Pre-licensed data — internal estimates, to be re-verified after our licensed data rebuild.
Close-to-close daily changes from 10 Apr 2006 to 4 Nov 2026 (5176 sessions). Later changes are measured from the close on the day of the move.
Biggest one-day falls
Of these 10, 8 were higher 21 sessions later · n = 10 · could be chance.
| Date | One-day change | After 5 sessions | After 21 sessions | After 63 sessions |
|---|---|---|---|---|
| 16 Mar 2020 | -14.0% | +1.8% | +11.7% | +25.9% |
| 27 Jan 2025 | -13.3% | +3.9% | +1.2% | -15.4% |
| 15 Oct 2008 | -9.6% | -8.9% | -0.7% | -2.4% |
| 18 Jul 2013 | -8.9% | +2.2% | -5.0% | +8.7% |
| 18 Mar 2020 | -8.6% | +11.5% | +22.2% | +28.8% |
| 7 Jan 2009 | -8.2% | -4.4% | +12.7% | +24.4% |
| 1 Dec 2008 | -8.1% | +5.6% | +20.2% | +22.4% |
| 17 Jul 2024 | -8.0% | -6.7% | +1.6% | +9.3% |
| 9 Oct 2008 | -7.9% | -0.4% | +3.2% | -0.7% |
| 3 Apr 2025 | -7.6% | -4.0% | +12.1% | +45.5% |
Biggest one-day rises
Of these 10, 5 were higher 21 sessions later · n = 10 · could be chance.
| Date | One-day change | After 5 sessions | After 21 sessions | After 63 sessions |
|---|---|---|---|---|
| 28 Oct 2008 | +21.1% | +8.8% | -6.6% | -0.3% |
| 27 Jul 2020 | +12.7% | -5.2% | -3.9% | +6.6% |
| 9 Apr 2025 | +12.3% | -4.5% | +11.2% | +45.0% |
| 25 May 2023 | +12.0% | -2.0% | +1.1% | -7.8% |
| 21 Nov 2008 | +11.3% | +0.9% | +15.7% | +17.2% |
| 15 Nov 2022 | +10.5% | +2.6% | -3.5% | +12.9% |
| 4 May 2009 | +9.8% | -12.4% | -12.3% | -6.7% |
| 17 Oct 2024 | +9.8% | -3.8% | -9.6% | +6.2% |
| 18 Jan 2024 | +9.8% | +3.1% | +12.1% | +17.0% |
| 24 Jul 2020 | +9.7% | +6.8% | +6.8% | +20.0% |