IRM'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 5 Nov 2026 (1406 sessions). Later changes are measured from the close on the day of the move.
Biggest one-day falls
Of these 9, 4 were higher 21 sessions later · n = 9 · could be chance.
| Date | One-day change | After 5 sessions | After 21 sessions | After 63 sessions |
|---|---|---|---|---|
| 5 Nov 2026 | -11.1% | pending | pending | pending |
| 20 Sep 2022 | -9.8% | -13.9% | -8.7% | +0.2% |
| 6 Nov 2024 | -9.0% | +1.3% | +5.0% | -6.6% |
| 13 Feb 2025 | -7.3% | -3.6% | -5.5% | +5.4% |
| 4 Apr 2025 | -7.1% | +8.1% | +25.6% | +30.0% |
| 13 Nov 2025 | -6.9% | -9.2% | -9.8% | +19.1% |
| 27 Jan 2025 | -6.4% | -3.2% | -10.5% | -14.1% |
| 6 Mar 2025 | -6.3% | +2.8% | -5.9% | +23.5% |
| 18 Dec 2024 | -6.2% | +2.4% | +6.6% | -11.9% |
| 6 Aug 2025 | -5.8% | +4.4% | +2.4% | +14.7% |
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 |
|---|---|---|---|---|
| 30 Apr 2026 | +10.0% | +0.7% | +0.3% | -2.9% |
| 9 Apr 2025 | +9.8% | -2.2% | +14.9% | +16.9% |
| 6 Feb 2026 | +7.7% | +14.7% | +12.5% | +34.5% |
| 24 Feb 2022 | +7.6% | +13.9% | +18.9% | +14.4% |
| 6 May 2021 | +7.5% | +0.6% | +9.8% | +7.6% |
| 25 Feb 2022 | +7.1% | +7.1% | +11.7% | +8.1% |
| 10 Nov 2022 | +6.9% | -2.4% | +4.3% | +3.4% |
| 5 Aug 2022 | +6.9% | +3.3% | -1.1% | -3.6% |
| 1 Aug 2024 | +6.8% | -2.0% | +3.4% | +17.2% |
| 12 Feb 2026 | +5.8% | +4.0% | +1.4% | +20.5% |