Find me the biggest percentage scanners

Screening Filters

1. price_change_pct >= 5

   • Purpose: To capture stocks that have risen significantly in price during the current session.
   • Rationale:
     • The user asked for the biggest percentage gainers. A direct “top N gainers” constraint isn’t specified in the filter set, so we approximate this by requiring a minimum percentage price increase.
     • A 5%+ move in a single session is already large for most listed stocks, so this threshold effectively filters out small or normal daily fluctuations and focuses on names with outsized moves that are more likely to be among the day’s big gainers.
     • In practice, this filter would typically be combined with sorting the results by price_change_pct in descending order to surface the biggest gainers among those meeting the ≥5% criterion.

2. list_exchange: ['XNYS', 'XNAS', 'XASE'] (NYSE, NASDAQ, NYSE American/AMEX)

   • Purpose: To restrict results to major U.S. stock exchanges.
   • Rationale:
     • The user asked about the US stock market. The primary U.S. equity markets are NYSE (XNYS), NASDAQ (XNAS), and NYSE American/AMEX (XASE).
     • Limiting to these exchanges excludes OTC/pink-sheet and foreign exchanges, which may have different liquidity, reporting, or risk profiles and are not typically what investors mean by “US stock market” in a screener context.
     • This keeps the universe aligned with commonly tracked U.S. listed stocks where “biggest percentage gainers” lists are usually drawn from.

Why Results Match:

• The exchange filter aligns the universe with the U.S. stock market, as requested, by only including major U.S. exchanges (NYSE, NASDAQ, AMEX).
• The price change percentage filter (≥5%) targets stocks with unusually large positive moves, which is exactly what “biggest percentage gainers” implies.
• While the filter doesn’t explicitly say “top 10/25 gainers,” it effectively narrows the list to substantial gainers; from there, sorting by price_change_pct (which screeners typically do) will surface the true biggest gainers among U.S.-listed stocks.