Futures Open Interest
Total futures open interest across all exchanges in USD
| Property | Value |
|---|---|
| Category | Market Data |
| Unit | USD |
| Resolution | 1d |
| Assets | BTC |
| Tier | Basic |
| API Endpoint | GET /v1/futures/oi |
| Field | total_oi_usd |
Overview
Total open interest across major centralized exchanges, measured in USD. Open interest represents the total value of all outstanding derivative contracts (futures and perpetual swaps) that have not been settled or closed.
Interpretation
Rising OI with rising price indicates a strong trend supported by new capital entering the market — longs are building positions. Rising OI with falling price suggests shorts are accumulating, or existing long positions are approaching liquidation levels. A sharp drop in OI typically signals forced liquidations or voluntary position unwinding. Historically, OI peaks above 10B have marked accumulation zones.
Use Cases
- Identifying leverage buildup before major moves
- Spotting potential liquidation cascades when OI diverges from price
- Confirming trend strength by checking if new money is entering via derivatives
- Monitoring overall market participation in Bitcoin futures
API Usage
curl -H "Authorization: Bearer YOUR_API_KEY" \
"https://api.blocklens.co/v1/futures/oi?start_date=2024-01-01&end_date=2024-12-31&limit=365"
Related Metrics
- OI Change (USD) — Daily change in futures open interest in USD
- OI Change (%) — Daily percentage change in futures open interest
- Annualized Funding Rate (OI-Weighted) — OI-weighted average annualized funding rate across 7 exchanges