The hottest and coldest days
The busiest fire day was July 30, 2026, when 144 of the most-traded stocks closed up 10% or more. The coldest was June 5, 2026: 162 froze, and not one caught fire. It was the only day of the year with no stock on fire.
StockFloc data study
How often do stocks move 10% in a day?
StockFloc sets every 10% day on fire or ice in your watchlist. Free on iPhone and Android, no account needed.
More often than you might think. In the year to October 20, 2026, about half of the most-traded US stocks closed up 10% or more on at least one day, and about half closed down 10% or more. On a typical day, 15 of them were up 10% or more.
Updated Oct 20, 2026 · 3,000 stocks and ETFs · 251 trading days
52%
caught fire
of the most-traded US stocks closed up 10% or more on at least one day (1,197 of 2,279).
50%
froze
closed down 10% or more at least once (1,130 of 2,279). Nearly two in three (64%) did one or the other.
1 in 120
daily odds
The chance a given stock catches fire on a given day: 0.84%. The chance it freezes: 0.57%.
15
on a typical day
Stocks on fire on the median trading day, with 8 frozen. Only one day all year had none on fire.
Month by month
Fire and ice, all year.
Stock-days on fire (closed up 10% or more) and frozen (closed down 10% or more), by month. Fire outnumbered ice 4,717 to 3,197 over the year. February was the only full month with more ice than fire.
■ On fire ■ Frozen · *Partial month (Oct 21 to 31, 2025 and Oct 1 to 20, 2026).
The giants
Even the biggest names catch fire.
Nvidia, Apple, and Alphabet went the whole year without a 10% day. Microsoft, Amazon, and Meta each caught fire at least once.
| Stock | Caught fire (up 10%+) | Froze (down 10%+) |
|---|---|---|
| Nvidia NVDA | Never | Never |
| Apple AAPL | Never | Never |
| Alphabet GOOGL | Never (missed by a tenth of a point on Apr 30, 2026) | Never |
| Microsoft MSFT | Once: Jul 30, 2026 (+15.3%) | Once: Jan 29, 2026 (-10.2%) |
| Amazon AMZN | Once: Jul 31, 2026 (+15.2%) | Never |
| Meta META | Twice: Jan 29, 2026 (+10.2%), Sep 21, 2026 (+11.4%) | Once: Oct 30, 2025 (-11.4%) |
| Tesla TSLA | Never | Once: Jul 23, 2026 (-14.5%) |
| Broadcom AVGO | Once: Nov 24, 2025 (+11.2%) | Twice: Dec 12, 2025 (-11.6%), Jun 4, 2026 (-12.5%) |
The stocks that burned most
A few small, fast-moving names caught fire again and again. AXTI closed up 10% or more on 44 separate days, AAOI on 34, CYPH on 33, and SNDK, the most-traded of the four, on 29. Most of them froze often too.
ETFs rarely do it
Only 10.5% of the most-traded ETFs, ETNs, and closed-end funds had a single 10% up day, and nearly all were leveraged or inverse funds, like GDXU and SOXS, built to move several times faster than their index.
See which stocks are on fire right now on today's fire and ice board, or how the fire and ice works in the app on the heat explainer.
Method
How we counted.
The list. The 3,000 most-traded US-listed stocks and ETFs by dollar volume as of October 20, 2026, the same list StockFloc's Top Movers scans. Common stocks and ADRs with at least 20 trading days in the window (2,279) are the "stocks" above. ETFs, ETNs, and closed-end funds (618) are counted separately. Because the list is ranked by recent trading, it leans toward stocks that have been busy, so treat these shares as describing heavily traded stocks, not every listed company.
The window. October 21, 2025 to October 20, 2026: 251 trading days.
Fire and ice. A stock caught fire when its regular-session close was 10% or more above the previous session's close, and froze when it was 10% or more below. After-hours trades are excluded. A stock that spiked 10% during the day and faded by the close does not count here, although the app would have shown it on fire live, so these counts are lower than what you would see in the app.
Clean-up. Moves of 40% or more were checked against stock split records, and 11 that lined up with a split or similar share-count change, not a real move, were removed. Three bad prints that fully reversed the next day were removed. Some prices in the feed are rounded to the dollar; when rounding could put a move on either side of 10%, the move was left out (7,668 cases), so the counts lean conservative.
Check. Data comes from StockFloc's commercially licensed US equities feed. We compared a random sample of 60 fire and ice days with an independent source's closing prices: 59 also cleared 10%, and the one miss was a +10.0% move that the other source had at +9.9%. Every large-company date in the table above was checked the same way.
You are welcome to cite these numbers with a link to this page. This is market information for education and entertainment, not investment advice.
FAQ
Common questions
How often does a stock move 10% in a day?
On a given day, about 0.84% of heavily traded US stocks close up 10% or more, roughly 1 in 120, and about 0.57% close down 10% or more. Over a full year it adds up: in StockFloc's study of the 3,000 most-traded US stocks and ETFs from October 2025 to October 2026, 52% of the stocks closed up 10% or more at least once and 50% closed down 10% or more at least once.
What does it mean when a stock is on fire?
In StockFloc, a stock is on fire when it is up 10% or more on the day against the previous close, and it freezes into ice when it is down 10% or more. The app draws those moves as live fire and ice on the stock's row, so the biggest movers stand out before you read a number.
Do big stocks like Apple or Nvidia ever move 10% in a day?
Rarely. From October 21, 2025 to October 20, 2026, Nvidia, Apple, and Alphabet never closed up or down 10% in a single day; Alphabet missed by about a tenth of a point on April 30, 2026. Microsoft, Amazon, and Meta each closed up 10% or more at least once, and Tesla closed down 10% or more once.
How many stocks move 10% on a typical day?
On the median day in the study, 15 of the most-traded US stocks closed up 10% or more and 8 closed down 10% or more. The busiest day was July 30, 2026, with 144 stocks on fire. The worst was June 5, 2026, with 162 frozen and none on fire, the only day of the year without a single stock up 10%.
Do ETFs move 10% in a day?
Much less often than stocks. Only 10.5% of the most-traded ETFs, ETNs, and closed-end funds closed up 10% or more on any day in the year, and nearly all of those were leveraged or inverse funds built to move several times faster than their index.
Watch your own stocks catch fire.
StockFloc is a stock watchlist where any stock up 10% or more in a day erupts into fire and any stock down 10% or more freezes into ice. No account, no brokerage.