GOOG's biggest one-day moves since 2006, 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 10 Apr 2006 to 4 Nov 2026 (3908 sessions). Later changes are measured from the close on the day of the move.
1 one-day changes above ±100% are withheld for price review.
Biggest one-day falls
Of these 9, 5 were higher 21 sessions later · n = 9 · could be chance.
| Date | One-day change | After 5 sessions | After 21 sessions | After 63 sessions |
|---|---|---|---|---|
| 29 Oct 2026 | -12.3% | pending | pending | pending |
| 29 Sep 2008 | -11.6% | -2.6% | -3.2% | -21.9% |
| 18 Jul 2008 | -9.8% | +2.2% | +3.5% | -26.7% |
| 26 Oct 2022 | -9.6% | -8.2% | +2.9% | +6.2% |
| 25 Oct 2023 | -9.6% | +0.7% | +9.1% | +21.4% |
| 1 Dec 2008 | -9.2% | +13.6% | +15.7% | +19.9% |
| 1 Feb 2008 | -8.6% | +0.2% | -13.8% | +12.7% |
| 20 Jan 2012 | -8.4% | -1.0% | +4.8% | +1.7% |
| 15 Apr 2011 | -8.3% | -1.1% | -0.0% | +12.1% |
| 18 Oct 2012 | -8.0% | -2.5% | -3.6% | +6.7% |
Biggest one-day rises
Of these 10, 3 were higher 21 sessions later · n = 10 · could be chance.
| Date | One-day change | After 5 sessions | After 21 sessions | After 63 sessions |
|---|---|---|---|---|
| 18 Apr 2008 | +20.0% | +0.9% | +7.1% | -10.8% |
| 17 Jul 2015 | +16.1% | -7.3% | -1.8% | -1.7% |
| 13 Oct 2008 | +14.8% | -0.4% | -18.3% | -17.5% |
| 18 Oct 2013 | +13.8% | +0.4% | +2.0% | +15.1% |
| 15 Jul 2011 | +13.0% | +3.4% | -6.8% | -6.5% |
| 28 Oct 2008 | +11.9% | -0.5% | -20.8% | -6.9% |
| 15 Oct 2010 | +11.2% | +1.8% | -1.0% | +3.8% |
| 30 Apr 2026 | +10.0% | +3.5% | -2.5% | -6.6% |
| 26 Apr 2024 | +10.0% | -2.7% | +2.5% | -1.5% |
| 9 Apr 2025 | +9.9% | -3.5% | -4.1% | +12.6% |