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Top Premarket Gappers Today
A premarket gapper is a stock trading well above (or below) its prior close before the 9:30 AM ET open, usually on a fresh catalyst such as earnings, FDA news, an analyst upgrade, or a buyout. Day traders watch the top gappers for the gap-and-go move — a strong open that keeps running in the direction of the gap through the first minutes of trading. This list ranks the biggest premarket gaps, updated live, so you can see which names are moving before the bell.
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How to use this list
- Rank by gap %: the largest gaps draw the most attention and follow-through candidates, but also carry the most risk.
- Check the catalyst: a gapper without news (earnings, FDA, upgrade, buyout) is more likely to fade than run after the open.
- Watch volume and short interest: strong premarket volume plus an elevated short % are the fuel for a squeeze move.