CI'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, 8 were higher 21 sessions later · n = 10 · could be chance.
| Date | One-day change | After 5 sessions | After 21 sessions | After 63 sessions |
|---|---|---|---|---|
| 30 Oct 2025 | -17.4% | +3.8% | +10.7% | +9.9% |
| 5 Aug 2021 | -10.9% | +1.7% | +5.2% | +6.3% |
| 31 Jul 2025 | -10.2% | +1.4% | +12.5% | +11.9% |
| 29 Nov 2023 | -8.1% | -1.6% | +14.5% | +27.3% |
| 30 Jan 2025 | -6.7% | +1.5% | +10.1% | +19.0% |
| 17 Aug 2023 | -6.4% | +4.4% | +5.9% | +5.1% |
| 11 Nov 2022 | -6.0% | +5.1% | +9.1% | -1.1% |
| 11 Dec 2024 | -5.6% | -4.0% | -3.1% | +8.3% |
| 3 Feb 2022 | -5.4% | +5.8% | +9.3% | +16.4% |
| 12 May 2025 | -5.3% | +2.0% | -1.3% | -10.7% |
Biggest one-day rises
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 |
|---|---|---|---|---|
| 11 Dec 2023 | +16.7% | -3.3% | +1.8% | +16.0% |
| 11 Nov 2024 | +7.3% | -6.0% | -13.9% | -12.2% |
| 5 May 2023 | +7.0% | -1.6% | +1.4% | +12.4% |
| 18 Dec 2024 | +6.3% | -0.3% | +2.3% | +14.0% |
| 6 May 2022 | +5.9% | -2.9% | -1.3% | +6.0% |
| 3 Nov 2025 | +5.8% | -0.2% | +4.5% | +5.1% |
| 2 Feb 2024 | +5.4% | +3.4% | +3.2% | +5.9% |
| 3 Oct 2025 | +4.7% | -3.3% | -16.8% | -8.7% |
| 5 Feb 2026 | +4.7% | +1.1% | -5.2% | -0.2% |
| 14 Jul 2023 | +4.7% | +3.9% | +2.5% | +5.1% |