Trading

Gap Risk: Definition

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Simple Definition

The risk that a stock jumps from one price to a very different one without trading in between.

Why It Matters

Prices don't always move smoothly. After earnings, news, or an overnight halt, a stock can 'gap' - the next trade prints far from the last one, with nothing in between. Gap risk is why stop orders can disappoint: a $45 stop-loss becomes a market order, but if the stock opens at $40, it fills near $40, not $45. A stop-limit avoids the bad fill but may not execute at all. Gaps are most common overnight, around earnings, and in thinly-traded names.

Key Points

  • A jump in price with no trades in between
  • Common overnight and around news or earnings
  • Can fill a stop-loss well past its stop price

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Common Questions

The risk that a stock jumps from one price to a very different one without trading in between. Prices don't always move smoothly. After earnings, news, or an overnight halt, a stock can 'gap' - the next trade prints far from the last one, with nothing in between.

Prices don't always move smoothly. After earnings, news, or an overnight halt, a stock can 'gap' - the next trade prints far from the last one, with nothing in between. Gap risk is why stop orders can disappoint: a $45 stop-loss becomes a market order, but if the stock opens at $40, it fills near $40, not $45. A stop-limit avoids the bad fill but may not execute at all. Gaps are most common overnight, around earnings, and in thinly-traded names.

A jump in price with no trades in between

Common overnight and around news or earnings

Can fill a stop-loss well past its stop price