XLI'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 30 Mar 2021 to 5 Nov 2026 (1409 sessions). Later changes are measured from the close on the day of the move.
Biggest one-day falls
Of these 9, 6 were higher 21 sessions later · n = 9 · could be chance.
| Date | One-day change | After 5 sessions | After 21 sessions | After 63 sessions |
|---|---|---|---|---|
| 4 Apr 2025 | -6.2% | +6.6% | +13.2% | +26.2% |
| 3 Apr 2025 | -5.4% | -1.8% | +7.1% | +18.4% |
| 5 Nov 2026 | -4.1% | pending | pending | pending |
| 13 Sep 2022 | -3.8% | -3.7% | -8.1% | +9.2% |
| 18 May 2022 | -3.7% | +0.2% | -6.5% | +9.4% |
| 26 Aug 2022 | -3.5% | -3.5% | -12.5% | +6.1% |
| 10 Jun 2026 | -3.4% | +5.9% | +6.3% | +0.6% |
| 10 Apr 2025 | -3.4% | +1.5% | +13.6% | +22.2% |
| 16 Jun 2022 | -3.3% | +3.5% | +4.2% | +4.0% |
| 29 Jul 2026 | -3.2% | +5.5% | +1.2% | -4.9% |
Biggest one-day rises
Of these 10, 9 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 | +9.8% | -2.8% | +6.7% | +17.5% |
| 10 Nov 2022 | +4.2% | -0.9% | +1.2% | +3.5% |
| 6 Nov 2024 | +3.9% | +0.6% | -0.6% | -2.0% |
| 19 Jul 2022 | +3.6% | +1.1% | +11.6% | -3.1% |
| 8 Apr 2026 | +3.5% | +0.6% | +2.5% | +6.4% |
| 24 Jun 2022 | +3.5% | -0.8% | +1.8% | -4.6% |
| 4 Oct 2022 | +3.5% | -3.2% | +4.9% | +12.4% |
| 11 Jun 2026 | +3.3% | +3.3% | +3.0% | -1.6% |
| 31 Mar 2026 | +3.2% | +5.2% | +7.9% | +13.3% |
| 3 Oct 2022 | +3.0% | +0.1% | +10.5% | +15.3% |