GIS'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, 5 were higher 21 sessions later · n = 10 · could be chance.
| Date | One-day change | After 5 sessions | After 21 sessions | After 63 sessions |
|---|---|---|---|---|
| 18 May 2022 | -7.3% | +2.5% | -2.0% | +15.5% |
| 17 Feb 2026 | -7.0% | +1.0% | -16.4% | -25.6% |
| 8 Mar 2022 | -5.8% | -0.8% | +9.4% | +9.3% |
| 28 Jun 2023 | -5.2% | -0.4% | -0.9% | -15.9% |
| 25 Jun 2025 | -5.1% | +6.2% | +2.0% | +2.1% |
| 30 Sep 2026 | -4.9% | -1.2% | +3.6% | pending |
| 26 Jun 2024 | -4.6% | -1.7% | +4.3% | +16.1% |
| 20 Dec 2022 | -4.6% | +2.0% | -6.3% | -0.6% |
| 11 Mar 2025 | -4.5% | -3.0% | -6.9% | -11.6% |
| 30 Jun 2026 | -4.3% | +4.4% | +4.7% | -2.8% |
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 |
|---|---|---|---|---|
| 1 Jul 2026 | +8.5% | -5.1% | -5.3% | -14.9% |
| 22 Oct 2026 | +8.0% | -5.3% | pending | pending |
| 29 Jun 2022 | +6.3% | +1.8% | +0.8% | +6.2% |
| 21 Sep 2022 | +5.7% | -1.2% | -3.2% | +5.0% |
| 4 Nov 2026 | +5.2% | pending | pending | pending |
| 19 Aug 2026 | +5.0% | +0.2% | -9.2% | pending |
| 8 Sep 2021 | +4.6% | -1.1% | +4.1% | +9.6% |
| 21 Feb 2023 | +4.4% | -0.8% | -0.4% | +7.6% |
| 4 Feb 2026 | +4.3% | +1.1% | -8.7% | -27.7% |
| 30 Jan 2026 | +4.1% | +3.5% | -3.7% | -24.9% |