SNPS'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, 6 were higher 21 sessions later · n = 10 · could be chance.
| Date | One-day change | After 5 sessions | After 21 sessions | After 63 sessions |
|---|---|---|---|---|
| 10 Sep 2025 | -35.8% | +9.7% | +24.9% | +20.1% |
| 5 Dec 2024 | -12.4% | -0.7% | -5.4% | -16.4% |
| 28 May 2025 | -9.6% | +2.3% | +8.7% | +30.4% |
| 10 Oct 2025 | -9.4% | +2.0% | -8.7% | +21.5% |
| 28 May 2026 | -8.6% | +2.9% | -6.9% | -3.3% |
| 3 Feb 2026 | -8.5% | +4.4% | +5.5% | +19.9% |
| 17 Jul 2026 | -7.9% | -2.8% | +7.5% | +21.8% |
| 3 Sep 2024 | -7.4% | -3.3% | +3.2% | +17.6% |
| 4 Apr 2025 | -7.1% | +8.5% | +22.0% | +42.1% |
| 17 Jul 2024 | -7.0% | -3.0% | -3.9% | -9.3% |
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 |
|---|---|---|---|---|
| 27 Aug 2026 | +13.4% | -10.4% | -10.2% | pending |
| 11 Sep 2025 | +13.0% | +9.6% | +0.2% | +8.6% |
| 18 Sep 2025 | +12.9% | +1.5% | -6.8% | -5.6% |
| 1 Oct 2026 | +12.8% | +1.5% | -4.7% | pending |
| 9 Apr 2025 | +12.3% | -3.0% | +12.6% | +30.5% |
| 19 May 2022 | +10.3% | +1.9% | +0.6% | +20.8% |
| 10 Nov 2022 | +9.9% | +1.7% | +4.9% | +13.5% |
| 25 May 2023 | +9.8% | +3.5% | -1.7% | +1.9% |
| 24 Apr 2026 | +9.6% | -2.4% | +6.7% | -22.3% |
| 19 Aug 2021 | +8.7% | +3.3% | +1.7% | +12.0% |