Understanding Open Interest in Futures and Options Trading

📊 Open Interest Explained

By Binance
Mar 12, 2026, 4:28 PM
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Open interest represents the total number of outstanding derivative contracts that haven't been settled.​ It's a crucial metric for traders to gauge market activity and liquidity.​

Key points about open interest:

  • Measures the total number of active futures or options contracts
  • Increases when new positions are opened, decreases when positions are closed
  • Differs from trading volume, which counts all transactions
  • Higher open interest typically indicates greater market liquidity

Why it matters:

  • Helps assess market sentiment and potential price movements
  • Indicates the strength of price trends
  • Useful for identifying potential support and resistance levels

Understanding open interest alongside price action and volume provides traders with deeper insights into market dynamics and helps inform trading decisions.​

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