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Binance Open Interest

Close-of-day open interest on Binance BTC perpetual futures — the largest single venue by OI.

PropertyValue
CategoryMarket Data
UnitUSD
Resolution1d
AssetsBTC
TierPro
API EndpointGET /v1/oi/exchange
Fieldclose_oi_usd

Overview​

Binance Open Interest tracks the total value of outstanding perpetual futures contracts on Binance, the world's largest exchange by BTC derivatives volume. Binance consistently holds 25–35% of global BTC futures open interest, making it the single most important venue for OI analysis.

How Binance Reports Open Interest​

Binance reports open interest as the total notional value (in USD) of all open perpetual and quarterly futures positions. The figure updates in real-time and includes both USDT-margined and coin-margined contracts. Blocklens captures the close-of-day snapshot for daily tracking.

Key factors that influence Binance OI:

  • New position opening: Both long and short entries increase OI
  • Position closing/liquidation: Reduces OI regardless of direction
  • Leverage changes: Re-margining without closing doesn't change OI
  • Cross-margin vs isolated: Both count toward total OI

Interpretation​

  • Rising OI + rising price = new longs entering, bullish conviction
  • Rising OI + falling price = new shorts entering, bearish pressure building
  • Falling OI + rising price = short squeeze / short closures
  • Falling OI + falling price = long liquidations / capitulation

Use Cases​

  • Tracking leverage buildup on the dominant exchange before potential liquidation events
  • Comparing Binance OI share vs other exchanges to detect flow migration
  • Identifying when Binance OI diverges from aggregate — signals localized positioning
  • Monitoring the cost basis and conviction of the largest derivatives market

API Usage​

curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://api.blocklens.co/v1/oi/exchange?exchange=binance&start_date=2024-01-01&end_date=2024-12-31&limit=365"