Stocks that moved significantly after hours. Overnight gap detection with continuation vs reversal classification.
Run this scan →After-hours moves are where overnight catalysts get priced in. A clean 2%+ gap from yesterday's close on a stock that closed flat is almost always a news event — earnings, guidance, M&A, or a regulatory decision dropped after the bell. The Post-Market Movers scanner detects these and classifies each as After-Hours Catalyst, Continuation (gap in the same direction as the prior session), or Reversal (gap against the prior session). Catalyst gaps are the most actionable.
After-hours and post-market trading became mainstream in the late 1990s when ECNs gave retail traders access to extended-hours sessions for the first time. Earnings traders and event-driven funds watch the post-market session carefully because it's where fundamental news first gets priced in. The classification of catalyst vs continuation vs reversal is a modern refinement that helps separate news-driven moves from technical noise.
Our scanner evaluates the following criteria when detecting Post-Market Movers setups across 5,000+ stocks daily.
For post-market movers setups, an A+ grade means a 5%+ overnight gap classified as a Catalyst (flat prior session followed by sharp gap) with pre-market volume confirmation. A requires 4%+ classified catalyst or continuation. B+ requires 3%+. B meets the 2% minimum. This is not a prediction of future price movement — it is a way to prioritize which charts deserve your attention first.
Use post-market movers as a next-day watchlist. Trade the regular-hours opening range, not the post-market price.
Use the opening range opposite as your stop. Post-market levels are unreliable because of thin volume.
First target is the next significant level on the daily chart. Trail with VWAP for trends.
This is educational content only. Not financial advice. Always do your own research and manage risk appropriately.