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What is a "stock in play", and why was a breakout not called?

Snap TradesLast updated October 27, 2026
Quick answerA stock whose first 15 minutes traded at least 1.5× their usual volume over the last 14 sessions. A breakout on an ordinary open is drawn on the chart but not called: that filter is most of the edge.
The details
  • In play: opening volume at 1.5× or more of its usual.
  • Not in play: the Snap zone is drawn, but no call.
  • Wrong side: a break against the opening candle is never the trade.
  • After 12:00: no new entries.

Published opening-range studies found the same: the in-play filter matters most (how it works).

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