PANW'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 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 |
|---|---|---|---|---|
| 21 Feb 2024 | -28.4% | +20.7% | +9.8% | +19.0% |
| 2 Sep 2026 | -9.3% | +3.0% | +22.8% | pending |
| 9 May 2022 | -9.0% | +1.9% | +14.2% | +8.9% |
| 4 Aug 2023 | -8.1% | -0.2% | +12.3% | +14.7% |
| 26 Jul 2022 | -7.9% | +9.8% | +21.4% | +4.0% |
| 16 Oct 2026 | -7.6% | +11.3% | pending | pending |
| 3 Nov 2022 | -7.5% | +9.2% | +13.6% | +4.4% |
| 20 Nov 2025 | -7.4% | +2.7% | +2.4% | -23.5% |
| 18 May 2022 | -7.3% | +15.3% | +8.4% | +18.1% |
| 5 Feb 2026 | -7.2% | +5.2% | +6.7% | +27.0% |
Biggest one-day rises
Of these 10, 8 were higher 21 sessions later · n = 10 · could be chance.
| Date | One-day change | After 5 sessions | After 21 sessions | After 63 sessions |
|---|---|---|---|---|
| 24 Aug 2021 | +18.6% | +4.3% | +9.3% | +22.2% |
| 21 Aug 2023 | +14.8% | -3.5% | -2.3% | +2.8% |
| 9 Apr 2025 | +13.4% | -1.9% | +8.0% | +8.3% |
| 14 Sep 2026 | +13.1% | -0.8% | +6.2% | pending |
| 24 Feb 2022 | +13.1% | +6.2% | +15.3% | -6.4% |
| 27 Aug 2026 | +12.8% | -13.3% | +2.4% | pending |
| 22 Feb 2023 | +12.5% | -0.4% | +3.3% | +1.1% |
| 23 Aug 2022 | +12.1% | -1.7% | -12.5% | -10.1% |
| 20 May 2022 | +9.7% | +5.9% | +3.3% | +6.1% |
| 29 May 2026 | +9.3% | -3.4% | +21.1% | +31.9% |