Open Interest
By Menno — 13 years in crypto, 3 bear markets survived, zero paid promotions
Last updated: March 2026
Open interest is the total number of outstanding derivative contracts (futures and options) that have not been settled. High open interest combined with extreme price moves often signals large liquidation cascades ahead.
Open interest (OI) measures the total number of active futures or options contracts that exist at any given time. Unlike trading volume (which measures new contracts created), open interest tracks contracts still open.
When OI increases: new money is entering the derivatives market (new long or short positions being opened) When OI decreases: positions are being closed (either by choice or liquidation)
Why open interest matters for crypto investors:
High OI + price rising = leveraged longs building up. This is often unsustainable and a signal that a sharp reversal may be coming when those longs get liquidated.
High OI + price falling = leveraged shorts accumulating. A short squeeze can rapidly push prices up as shorts are forced to close.
OI is especially useful in combination with: - Funding rates: high OI + positive funding = market is over-leveraged long (bearish signal) - Price action: "long squeeze" or "short squeeze" identification
Exchanges like Binance, Bybit, and CoinGlass provide open interest data in real time.
Practical implication: when Bitcoin open interest reaches extreme levels (often all-time highs), the market is positioned for a violent move in either direction — and the move will happen whichever way liquidates the most capital.
Frequently Asked Questions
Where can I check Bitcoin open interest?
CoinGlass (coinglass.com) is the most comprehensive tool for tracking open interest across all major exchanges. It provides real-time and historical OI data, liquidation heatmaps, and funding rates — all essential for derivatives market analysis.
What is a long squeeze vs. a short squeeze?
A long squeeze happens when prices drop sharply, liquidating leveraged long positions, which causes further selling, which liquidates more longs — a cascade. A short squeeze is the opposite: prices rise sharply, liquidating shorts who must buy to close positions, driving prices higher. Both are amplified by high open interest.
Related Terms
Funding Rate
The funding rate is a periodic payment between long and short traders on perpetual futures exchanges. Positive rates mean longs pay shorts (bullish sentiment), negative rates mean shorts pay longs (bearish sentiment).
Leverage (Crypto Trading)
Leverage in crypto trading means borrowing capital to increase the size of your position. 10x leverage means a $1,000 deposit controls a $10,000 position — amplifying both gains and losses.
Liquidation
In crypto, liquidation is the forced closure of a leveraged trading position when losses reach the deposited margin. The exchange sells your position automatically to prevent further losses beyond your collateral.
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