HACK'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 4 Nov 2026 (1408 sessions). Later changes are measured from the close on the day of the move.
Biggest one-day falls
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 |
|---|---|---|---|---|
| 4 Apr 2025 | -6.4% | +9.9% | +17.8% | +33.8% |
| 3 Apr 2025 | -5.7% | +1.2% | +10.5% | +25.0% |
| 9 May 2022 | -5.6% | +1.9% | +8.2% | +9.2% |
| 9 Apr 2026 | -5.1% | +4.0% | +15.2% | +46.2% |
| 5 May 2022 | -5.0% | -9.9% | -2.7% | -0.3% |
| 21 Feb 2024 | -5.0% | +5.0% | +5.4% | +2.5% |
| 10 Apr 2026 | -4.9% | +10.4% | +20.7% | +54.1% |
| 13 Jun 2022 | -4.8% | +2.3% | +3.0% | +6.7% |
| 23 Feb 2026 | -4.7% | +4.8% | +5.7% | +33.6% |
| 18 Dec 2024 | -4.7% | +3.0% | +6.0% | +1.7% |
Biggest one-day rises
Of these 9, 9 were higher 21 sessions later · n = 9 · could be chance.
| Date | One-day change | After 5 sessions | After 21 sessions | After 63 sessions |
|---|---|---|---|---|
| 9 Apr 2025 | +11.4% | -2.4% | +6.6% | +14.8% |
| 27 Aug 2026 | +8.0% | -5.9% | +0.8% | pending |
| 14 Sep 2026 | +7.9% | +3.7% | +7.2% | pending |
| 24 Feb 2022 | +6.0% | +4.9% | +6.4% | -15.3% |
| 29 May 2026 | +5.9% | -2.1% | +5.1% | +15.7% |
| 10 Nov 2022 | +5.8% | -0.6% | +2.0% | +4.6% |
| 1 Jun 2026 | +5.7% | -7.8% | +1.6% | +10.8% |
| 14 Jul 2026 | +4.6% | -5.6% | +4.0% | +11.2% |
| 13 Apr 2026 | +4.4% | +6.4% | +14.2% | +54.4% |
| 9 Oct 2026 | +4.3% | -10.5% | pending | pending |