Correction Speed
30 reached -10% or deeper.
▶ View the live, interactive version with full charts →
How fast SPX corrections breach -5/-10/-15/-20%/-30% tiers vs history.
- 98 correction episodes since 1950.
- 30 reached -10% or deeper.
- SPX near ATH — no active correction
Current SPX DD
-2.2%
-5%+ Episodes
98
-10%+ Reached
30
Median Days to -5%
19d
Median -5%→-10%
12d
2nd Leg Faster
63%
When to run this study
Run during or after market corrections to contextualize the speed of the current decline. The key question: is this correction moving faster or slower than historical norms? The 'First vs Second Half' chart is the heart of this study — for -10%+ corrections, it shows whether the second -5% leg typically takes longer (exhaustion) or less time (panic acceleration). Points above the diagonal = first leg was faster.
Historical results
Speed Statistics by Tier
| Tier | N | Median | Mean | p25 | p75 | Max | Leg Med | Leg Mean |
|---|---|---|---|---|---|---|---|---|
| -5% | 98 | 19 | 60 | 10 | 41 | 1798 | 19 | 60 |
| -10% | 30 | 65 | 130 | 21 | 109 | 1807 | 12 | 28 |
| -15% | 16 | 99 | 211 | 35 | 165 | 1818 | 17 | 25 |
| -20% | 11 | 188 | 179 | 113 | 265 | 310 | 24 | 51 |
| -30% | 6 | 305 | 235 | 91 | 367 | 373 | 67 | 70 |