Premarket breakouts

Screening Filters

1. Price: 5–150 USD

   • Purpose: Focus on reasonably priced, liquid stocks and avoid extremely low-priced penny stocks or very high-priced illiquid names.
   • Rationale:
     • Premarket “breakouts” are generally more actionable in stocks that are actively traded and not dominated by erratic penny-stock behavior.
     • Capping at 150 USD avoids a handful of very high-priced names that can skew moves in dollar terms but may not represent broad “breakout” activity for most traders.

2. Gap Pattern: GapUp

   • Purpose: Isolate stocks that are opening significantly higher than the previous close.
   • Rationale:
     • A “premarket breakout” typically means a strong bullish move before the regular session, often visible as a gap up from yesterday’s close.
     • Requiring a GapUp pattern directly targets stocks that are “breaking out” higher rather than flat or down.

3. Pre-market Price Change: ≥ 4%

   • Purpose: Ensure the move is meaningful, not just noise.
   • Rationale:
     • A 4% or greater move in premarket is substantial and aligns with the idea of a “breakout,” not a routine fluctuation.
     • This threshold filters out small, insignificant gaps so you only see notable strength.

4. Pre-market Dollar Volume: ≥ 100,000 USD

   • Purpose: Focus on moves backed by at least some liquidity.
   • Rationale:
     • A breakout is more credible when there’s enough capital trading to suggest real interest, not just a few tiny trades.
     • The dollar-volume floor helps avoid illiquid moves that look dramatic percentage-wise but are hard to trade.

5. Region: United States

   • Purpose: Limit results to U.S.-listed stocks.
   • Rationale:
     • You asked specifically for the US stock market, so we exclude all foreign markets and only include U.S. securities.

6. List Exchange: XNYS, XNAS, XASE (NYSE, NASDAQ, AMEX)

   • Purpose: Restrict to the main U.S. stock exchanges.
   • Rationale:
     • Most traders look for premarket breakouts in primary U.S. venues where liquidity, regulation, and data quality are higher.
     • This avoids OTC and other less-regulated venues where price action can be unreliable.

Why Results Match Your Request

• The GapUp + ≥4% premarket move combination directly captures stocks showing strong bullish “breakout” behavior in premarket.
• The U.S. region and major exchanges filters confine the search to the core U.S. stock market, as requested.
• The price and premarket dollar volume filters refine the list to more tradable, liquid names where the breakout is more likely to be actionable and less likely to be random noise.