AMAT'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 5 Nov 2026 (1409 sessions). Later changes are measured from the close on the day of the move.
Biggest one-day falls
Of these 9, 4 were higher 21 sessions later · n = 9 · could be chance.
| Date | One-day change | After 5 sessions | After 21 sessions | After 63 sessions |
|---|---|---|---|---|
| 15 Aug 2025 | -14.1% | +0.5% | +7.3% | +38.0% |
| 5 Nov 2026 | -13.6% | pending | pending | pending |
| 15 Oct 2024 | -10.7% | -4.2% | -4.3% | -2.4% |
| 17 Jul 2024 | -10.5% | -6.2% | -3.7% | -13.2% |
| 1 Jul 2026 | -10.0% | -9.6% | -22.0% | -21.3% |
| 5 Jun 2026 | -9.7% | +25.2% | +25.9% | +0.4% |
| 15 Nov 2024 | -9.2% | +3.6% | +0.9% | +4.2% |
| 18 Jan 2022 | -8.8% | -12.7% | -7.5% | -23.2% |
| 23 Jun 2026 | -8.5% | +23.4% | -3.9% | -19.2% |
| 29 Jul 2026 | -8.4% | +22.4% | +10.5% | -9.2% |
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 |
|---|---|---|---|---|
| 9 Apr 2025 | +16.1% | -7.7% | +3.9% | +32.2% |
| 30 Jul 2026 | +15.0% | +5.1% | -8.0% | -17.0% |
| 25 Jun 2026 | +13.4% | -9.7% | -22.6% | -29.1% |
| 11 Jun 2026 | +11.2% | +11.7% | +7.8% | -17.4% |
| 10 Nov 2022 | +11.0% | -0.3% | +4.4% | +11.2% |
| 29 Jun 2026 | +10.8% | -20.2% | -37.2% | -29.8% |
| 8 Apr 2026 | +8.9% | +2.2% | +6.5% | +52.6% |
| 8 Jun 2026 | +8.6% | +19.0% | +19.6% | -3.9% |
| 13 Feb 2026 | +8.1% | +5.3% | -0.7% | +23.0% |
| 12 May 2025 | +8.0% | -1.2% | +2.9% | +12.2% |