What happens after a stock jumps 10% in a day
More often than not, it lags the market afterward. Across 10,845 cases from Sep 16, 2025 to Sep 18, 2026, US stocks that closed up 10% or more were higher 20 sessions later 36% of the time, with a median return of −7.5%. Only 37% beat the median stock over those 20 sessions — a coin flip would be 50%.
The findings
- Closed up 20%+: 30% were higher 20 sessions later (median −15.6%), and 31% beat the median stock — 2,321 cases.
- Closed up 10%+: 36% were higher 20 sessions later (median −7.5%), and 37% beat the median stock — 10,845 cases.
- Gapped up 5%+ at the open: 40% were higher 20 sessions later (median −4.9%), and 40% beat the median stock — 10,904 cases.
- Rose on 3× normal volume: 44% were higher 20 sessions later (median −1.5%), and 45% beat the median stock — 7,960 cases.
- Fell on 3× normal volume: 47% were higher 20 sessions later (median −0.6%), and 48% beat the median stock — 7,292 cases.
- Gapped down 5%+ at the open: 35% were higher 20 sessions later (median −7.5%), and 36% beat the median stock — 9,530 cases.
- Closed down 10%+: 35% were higher 20 sessions later (median −9.1%), and 35% beat the median stock — 8,974 cases.
- Closed down 20%+: 29% were higher 20 sessions later (median −16.1%), and 31% beat the median stock — 1,524 cases.
Every event, side by side
| After the stock… | Cases | Higher in 5 | Median 5 | Higher in 20 | Median 20 | Beat median stock |
|---|---|---|---|---|---|---|
| Closed up 20%+ | 2,321 | 36% | −6.3% | 30% | −15.6% | 31% |
| Closed up 10%+ | 10,845 | 42% | −2.6% | 36% | −7.5% | 37% |
| Gapped up 5%+ at the open | 10,904 | 44% | −1.6% | 40% | −4.9% | 40% |
| Rose on 3× normal volume | 7,960 | 45% | −0.6% | 44% | −1.5% | 45% |
| Fell on 3× normal volume | 7,292 | 47% | −0.3% | 47% | −0.6% | 48% |
| Gapped down 5%+ at the open | 9,530 | 41% | −2.3% | 35% | −7.5% | 36% |
| Closed down 10%+ | 8,974 | 41% | −2.8% | 35% | −9.1% | 35% |
| Closed down 20%+ | 1,524 | 34% | −7.2% | 29% | −16.1% | 31% |
| Every stock, every day | 893,695 | 49% | 0.0% | 50% | −0.1% | 50% |
"Higher in 5/20" = closed above the event-day close 5 / 20 sessions later. "Beat median stock" = its 20-session return beat the median US stock's over the same 20 sessions (50% by definition for the baseline row).
Method
- Universe: US common stocks (no ETFs) that closed at $5 or more with at least $1M average daily dollar volume over the prior 20 sessions.
- Data: daily bars from Databento, back-adjusted for detected splits. Moves outside −60% / +100% in a day, or a 20-session change outside 0.25×–4×, are dropped as likely split or bad-print artifacts.
- Measure: the return from the event-day close to the close 5 and 20 sessions later. "Beat the median stock" compares it with the median 20-session return of every stock in the universe from the same day, so a strong or weak market doesn't flatter the result.
- Limits: one year of one market regime; fixed horizons with no stops, targets or trading costs; and stocks no longer listed at the latest scan are missing — which, if anything, flatters the results. A base rate describes the average case, not your next trade.
Cite as: StockSetups Research, "What happens after a stock jumps 10% in a day," stocksetups.com/research/after-big-moves, data Sep 16, 2025 – Sep 18, 2026.
More from our research
- Signal Report Card — every signal we've published, forward-tracked, losers included.
- Research & methodology — how the scanner works and the 50-day-high breakout study.
- Today's biggest movers — the stocks making the kind of moves measured here.
Questions
Do stocks go down after a big gain?
Often, in this data. Of 10,845 times a US stock closed up 10% or more in a day (Sep 16, 2025 – Sep 18, 2026), 36% were higher 20 sessions later and the median return was −7.5%. Only 37% beat the median stock over the same 20 sessions.
Do gap-ups keep going?
Not on average. Stocks that opened 5% or more above the prior close were higher 5 sessions later 44% of the time and 20 sessions later 40% of the time (median −4.9%). A base rate isn't a trade signal — the catalyst, the chart and your exit plan decide an individual trade.
Do stocks bounce back after falling 10% in a day?
Usually not within a month, in this data. After closing down 10% or more, 35% were higher 20 sessions later (median −9.1%), and 35% beat the median stock.
Is this investment advice?
No. It's a historical base rate over one year of US market data, measured at fixed horizons from the event-day close, with no trading costs. Past results don't predict future returns.
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