CPB'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, 2 were higher 21 sessions later · n = 10 · could be chance.
| Date | One-day change | After 5 sessions | After 21 sessions | After 63 sessions |
|---|---|---|---|---|
| 7 Jun 2023 | -8.9% | -0.4% | +0.6% | -8.5% |
| 18 May 2022 | -8.1% | +3.8% | -1.8% | +10.7% |
| 8 Mar 2022 | -7.1% | +2.8% | +7.0% | +11.1% |
| 11 Mar 2026 | -7.1% | -8.1% | -10.9% | -0.3% |
| 3 Sep 2026 | -6.9% | -5.1% | -12.8% | pending |
| 9 Jun 2021 | -6.5% | -0.9% | -0.6% | -5.5% |
| 4 Dec 2024 | -6.2% | +0.7% | -4.2% | -0.6% |
| 17 Feb 2026 | -5.8% | -1.8% | -24.1% | -26.8% |
| 12 Mar 2026 | -5.6% | -2.9% | -6.8% | +5.0% |
| 9 Dec 2025 | -5.2% | +0.7% | -7.2% | -24.0% |
Biggest one-day rises
Of these 8, 2 were higher 21 sessions later · n = 8 · could be chance.
| Date | One-day change | After 5 sessions | After 21 sessions | After 63 sessions |
|---|---|---|---|---|
| 22 Oct 2026 | +8.7% | -1.2% | pending | pending |
| 3 Sep 2025 | +7.2% | -0.7% | -6.3% | -11.4% |
| 6 Dec 2023 | +7.1% | +4.9% | +2.4% | -1.5% |
| 7 Dec 2022 | +6.0% | +1.5% | +0.3% | -5.9% |
| 4 Nov 2026 | +5.9% | pending | pending | pending |
| 4 Feb 2026 | +5.7% | +3.1% | -9.3% | -26.3% |
| 1 Jul 2026 | +5.4% | -8.5% | -6.3% | -15.5% |
| 7 Mar 2025 | +5.1% | -8.1% | -8.0% | -16.7% |
| 27 Mar 2026 | +5.0% | +0.1% | -6.6% | +4.6% |
| 24 Jun 2026 | +4.9% | +5.5% | -1.8% | -8.5% |