TXN'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 5 Nov 2026 (2909 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 |
|---|---|---|---|---|
| 22 Jul 2008 | -14.6% | +0.2% | +0.6% | -25.9% |
| 23 Jul 2025 | -13.3% | +1.8% | +7.8% | -2.9% |
| 5 Nov 2026 | -10.7% | pending | pending | pending |
| 1 Dec 2008 | -10.0% | +5.8% | +10.8% | +6.8% |
| 26 Jun 2026 | -8.5% | +6.3% | -2.9% | -2.6% |
| 23 Jun 2026 | -8.4% | -2.1% | -6.4% | -11.6% |
| 23 Oct 2007 | -8.3% | +2.6% | -2.2% | -2.9% |
| 15 Oct 2008 | -8.0% | -6.2% | +0.8% | -15.7% |
| 3 Apr 2025 | -7.9% | -4.6% | -1.1% | +30.0% |
| 4 Apr 2025 | -7.8% | -2.5% | +6.4% | +43.1% |
Biggest one-day rises
Of these 10, 7 were higher 21 sessions later · n = 10 · could be chance.
| Date | One-day change | After 5 sessions | After 21 sessions | After 63 sessions |
|---|---|---|---|---|
| 23 Apr 2026 | +19.4% | -0.4% | +9.6% | -0.9% |
| 9 Apr 2025 | +16.1% | -13.5% | +1.6% | +30.5% |
| 28 Oct 2008 | +10.3% | -1.4% | -19.9% | -22.3% |
| 28 Jan 2026 | +9.9% | +3.1% | -1.9% | +24.5% |
| 12 May 2025 | +8.7% | +0.6% | +6.6% | +3.0% |
| 18 Jan 2012 | +8.5% | -2.7% | +1.1% | +725.3% |
| 6 Jan 2026 | +8.4% | -1.9% | +16.6% | +8.7% |
| 23 Mar 2009 | +7.8% | -3.5% | +3.8% | +24.1% |
| 24 Apr 2007 | +7.7% | -0.0% | +0.5% | +4.6% |
| 18 Jun 2026 | +6.9% | -11.6% | -9.8% | -17.4% |