High Open Interest / Volume Option Detector
Powered by Massive APICustom built for high probability win rate contractsFind liquid options contracts with high open interest. Identify the most actively traded options for better execution and tighter spreads. Data sourced via OPRA — the official consolidator for all 17 U.S. options exchanges.
💡 To maximize win probability, look for option contracts where Daily Volume exceeds Open Interest (Volume > OI), and both figures are exceptionally high (typically Volume > 1,000 and Open Interest > 5,000). They reveal institutional positioning and market liquidity, which directly impact your actual trading success rate.
Ready to Screen Options
Enter a stock symbol and adjust your filters to find liquid options contracts.
High open interest and volume may indicate powerful "smart money" signals that professional traders and institutions use to detect impending large price moves in the underlying stock.
Volume vs. Open Interest
Volume alone can be day-traders flipping in and out. Rising open interest on top of high volume means new positions are being opened and held → higher conviction.
Bullish Signal
High call volume + rising OI in calls → may indicate institutional bullish accumulation.
Bearish Signal
High put volume + rising OI in puts → may indicate institutional bearish hedging or outright short bets.
Price Magnets
Heavy OI building at strikes well above/below current price often act as magnets or reversal points for price action.