WMT'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 1 Apr 2021 to 4 Nov 2026 (1406 sessions). Later changes are measured from the close on the day of the move.
Biggest one-day falls
Of these 10, 4 were higher 21 sessions later · n = 10 · could be chance.
| Date | One-day change | After 5 sessions | After 21 sessions | After 63 sessions |
|---|---|---|---|---|
| 17 May 2022 | -11.4% | -5.5% | -8.2% | +6.7% |
| 20 Aug 2026 | -9.2% | -1.2% | +3.5% | pending |
| 16 Nov 2023 | -8.1% | +0.0% | -0.3% | +13.1% |
| 26 Jul 2022 | -7.6% | +8.8% | +11.1% | +14.8% |
| 21 May 2026 | -7.3% | -4.6% | -1.6% | -14.5% |
| 18 May 2022 | -6.8% | +0.8% | -3.4% | +14.1% |
| 20 Feb 2025 | -6.5% | -0.4% | -11.3% | -0.3% |
| 4 Apr 2025 | -4.7% | +11.6% | +18.5% | +17.0% |
| 21 Aug 2025 | -4.5% | -1.9% | +5.0% | +2.7% |
| 10 Mar 2025 | -4.3% | -0.4% | -6.6% | +11.5% |
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 |
|---|---|---|---|---|
| 9 Apr 2025 | +9.5% | +1.8% | +8.2% | +5.6% |
| 16 May 2024 | +7.0% | +1.3% | +5.3% | +15.1% |
| 15 Aug 2024 | +6.6% | +3.6% | +10.4% | +17.2% |
| 15 Nov 2022 | +6.5% | +2.9% | -1.0% | -1.8% |
| 20 Nov 2025 | +6.5% | +3.2% | +5.1% | +18.3% |
| 16 Aug 2022 | +5.1% | -3.9% | -4.2% | -0.7% |
| 14 Oct 2025 | +5.0% | -0.9% | -3.5% | +12.0% |
| 25 Feb 2025 | +4.3% | -2.8% | -12.5% | +0.4% |
| 2 Feb 2026 | +4.1% | +4.0% | +3.0% | +5.1% |
| 6 Aug 2025 | +4.1% | -2.3% | -2.8% | -1.1% |