ROK'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 5 Nov 2026 (1407 sessions). Later changes are measured from the close on the day of the move.
Biggest one-day falls
Of these 9, 6 were higher 21 sessions later · n = 9 · could be chance.
| Date | One-day change | After 5 sessions | After 21 sessions | After 63 sessions |
|---|---|---|---|---|
| 31 Jan 2024 | -17.6% | +6.2% | +14.6% | +7.0% |
| 3 May 2022 | -14.5% | -4.0% | +3.6% | +18.1% |
| 5 Nov 2026 | -14.2% | pending | pending | pending |
| 3 Apr 2025 | -8.3% | -3.8% | +6.1% | +42.3% |
| 2 Nov 2022 | -7.9% | +7.7% | +13.3% | +23.8% |
| 1 Aug 2023 | -7.5% | -1.7% | -0.0% | -14.9% |
| 4 Aug 2026 | -7.4% | +0.4% | -4.5% | -1.1% |
| 12 Feb 2026 | -6.1% | +4.4% | -4.7% | +19.5% |
| 15 Mar 2023 | -6.0% | +0.4% | +0.2% | +13.7% |
| 7 Nov 2024 | -5.8% | +3.4% | +8.3% | +10.1% |
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 |
|---|---|---|---|---|
| 10 Feb 2025 | +12.6% | +0.1% | -13.0% | -0.4% |
| 7 May 2025 | +11.9% | +8.6% | +15.0% | +18.0% |
| 9 Apr 2025 | +10.7% | -5.9% | +21.6% | +42.1% |
| 27 Jul 2022 | +9.6% | +4.4% | +3.1% | +0.9% |
| 6 Nov 2024 | +9.2% | -2.5% | +0.9% | +3.3% |
| 5 May 2026 | +8.9% | +4.4% | +6.0% | +3.2% |
| 2 Nov 2021 | +7.4% | -2.3% | +0.4% | -14.0% |
| 19 Jul 2022 | +5.7% | +1.4% | +18.8% | +7.1% |
| 8 Apr 2026 | +5.6% | +1.9% | +15.0% | +19.9% |
| 14 Dec 2023 | +5.5% | -0.0% | -3.7% | -8.9% |