BMY'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, 7 were higher 21 sessions later · n = 10 · could be chance.
| Date | One-day change | After 5 sessions | After 21 sessions | After 63 sessions |
|---|---|---|---|---|
| 25 Apr 2024 | -8.5% | -2.2% | -7.7% | +14.6% |
| 26 Oct 2023 | -6.4% | -3.5% | -7.5% | -4.8% |
| 29 Aug 2022 | -6.2% | +2.8% | +8.0% | +19.5% |
| 10 Apr 2025 | -6.1% | -2.4% | -4.5% | -4.9% |
| 31 Jul 2025 | -5.8% | +4.7% | +8.9% | -1.6% |
| 14 May 2025 | -5.3% | +6.5% | +12.8% | +9.8% |
| 6 May 2025 | -5.0% | -2.1% | +0.6% | -4.5% |
| 29 Apr 2021 | -4.8% | +2.5% | +4.5% | +9.2% |
| 11 Nov 2022 | -4.3% | +2.0% | +1.8% | -4.1% |
| 27 Jul 2023 | -4.2% | +0.8% | +2.2% | -5.8% |
Biggest one-day rises
Of these 9, 5 were higher 21 sessions later · n = 9 · could be chance.
| Date | One-day change | After 5 sessions | After 21 sessions | After 63 sessions |
|---|---|---|---|---|
| 26 Jul 2024 | +11.4% | -3.3% | -4.4% | +6.1% |
| 11 Nov 2024 | +10.5% | -5.0% | -5.3% | -5.4% |
| 30 Oct 2025 | +7.1% | +2.2% | +7.8% | +22.5% |
| 31 Oct 2024 | +5.9% | -1.9% | +7.5% | +7.2% |
| 3 Dec 2025 | +5.6% | +0.5% | +4.1% | +18.3% |
| 30 Apr 2026 | +5.2% | -7.2% | -9.3% | +7.8% |
| 1 Oct 2025 | +5.2% | -6.1% | -3.8% | +13.7% |
| 20 Oct 2026 | +4.8% | -0.2% | pending | pending |
| 13 Dec 2021 | +4.8% | +4.5% | +10.7% | +19.2% |
| 17 Jul 2024 | +4.7% | +3.5% | +13.8% | +23.6% |