SO's biggest one-day moves since 2021, 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 5 Apr 2021 to 4 Nov 2026 (1405 sessions). Later changes are measured from the close on the day of the move.
Biggest one-day falls
Of these 10, 6 were higher 21 sessions later · n = 10 · could be chance.
| Date | One-day change | After 5 sessions | After 21 sessions | After 63 sessions |
|---|---|---|---|---|
| 13 Jun 2022 | -4.7% | -2.3% | +4.5% | +14.8% |
| 6 Oct 2022 | -4.4% | -2.6% | -1.2% | +10.1% |
| 29 Sep 2022 | -4.3% | -5.3% | -4.4% | +5.2% |
| 4 Apr 2025 | -3.9% | +1.0% | +2.6% | +3.5% |
| 28 Jan 2025 | -3.4% | -0.4% | +6.6% | +10.4% |
| 12 Oct 2022 | -3.4% | +5.2% | +6.8% | +15.6% |
| 18 Jan 2023 | -3.3% | -0.7% | -2.7% | +8.6% |
| 3 Aug 2023 | -3.3% | +1.2% | -1.0% | +0.8% |
| 1 Jun 2026 | -3.3% | +2.5% | +6.8% | -1.2% |
| 5 Jul 2022 | -3.2% | +1.6% | +9.1% | -0.7% |
Biggest one-day rises
Of these 9, 5 were higher 21 sessions later · n = 9 · could be chance.
| Date | One-day change | After 5 sessions | After 21 sessions | After 63 sessions |
|---|---|---|---|---|
| 1 Aug 2024 | +4.8% | -1.3% | -0.5% | +2.9% |
| 19 Feb 2026 | +4.4% | +1.4% | -1.7% | -1.5% |
| 13 Oct 2022 | +4.1% | -0.9% | +1.6% | +11.0% |
| 12 Dec 2022 | +3.9% | -3.0% | -1.0% | -3.8% |
| 22 Oct 2026 | +3.8% | -0.9% | pending | pending |
| 13 Dec 2023 | +3.7% | -4.6% | -3.8% | -4.5% |
| 27 Jan 2025 | +3.6% | -2.9% | +3.5% | +5.8% |
| 10 Nov 2022 | +3.6% | -1.2% | +9.2% | +3.2% |
| 28 Jul 2022 | +3.5% | +2.8% | +4.0% | -12.7% |
| 25 Feb 2022 | +3.4% | +3.9% | +9.2% | +16.8% |