Open interest counts every active futures or options contract that's currently open and hasn't been closed or settled.

Not the number of trades. Not daily volume. The number of contracts still live right now.

New trader opens a long. Open interest goes up by one. That same trader closes the position. Open interest goes back down. Contract expires or gets liquidated. Down again.

Snapshot of how much active exposure exists in the market at any given moment.

Open Interest vs Volume

Gets confused constantly. Different things.

• Volume counts every transaction. Open a trade, that's volume. Close it, more volume. Same contract counted twice.
• Open interest only counts contracts still open. Close a position and open interest falls. No double counting.

High volume with falling open interest means lots of trading activity but positions closing out. Not new money coming in. Existing traders exiting.

High volume with rising open interest means new positions being built. Fresh capital entering. Different signal entirely.

How to Read Open Interest

Numbers alone mean nothing. Context does.

Price rising, open interest rising. New longs entering as price climbs. Fresh money backing the move. Trend has conviction. Continuation more likely.

Price rising, open interest falling. Short sellers covering. Closing losing positions pushes price up. Not new buyers driving the move. Rally built on exits not entries. Weaker signal.

Price falling, open interest rising. New shorts piling in as price drops. Fresh money betting on further downside. Downtrend has conviction.

Price falling, open interest falling. Longs closing out. Long liquidations pushing price down. Capitulation. When open interest drops fast during a selloff, often signals exhaustion. Potential bottom forming.

Real Example

Bitcoin sitting at $60,000. Open interest across major exchanges at $15 billion.

Price starts climbing toward $65,000. Open interest rises to $18 billion simultaneously.

New money entering as price rises. Longs being opened. Move has real backing behind it.

Now different scenario. Same price climb from $60,000 to $65,000. Open interest drops from $15 billion to $12 billion during the move.

Shorts closing. Not new buyers. Rally driven by forced covering not genuine demand. Same price action. Completely different story underneath.

Open Interest and Liquidations

High open interest plus leverage is a loaded gun.

Massive long open interest built up during a rally. Market moves against those positions. Liquidations cascade. Each forced close adds more sell pressure. More liquidations trigger. Price drops faster than fundamentals justify.

Same dynamic on the short side. Heavy short open interest, price starts rising. Short squeezes run hard when open interest is concentrated.

Exchanges publish liquidation heatmaps showing where large clusters of open interest sit. Traders use these to identify likely liquidation zones. Price often gravitates toward areas of dense open interest before reversing. Liquidity hunting.

Where to Track Open Interest

Coinglass is the main tool. Shows open interest across all major exchanges in real time. Breaks it down by asset, by exchange, long versus short ratio.

DEXScreener and TradingView display open interest on futures charts directly. Most major exchanges show it in their own trading interface.

Useful to check open interest relative to recent history. Not the raw number but whether it's elevated or compressed versus normal levels. Extremely high open interest on a prolonged trend is often a warning. Too many people on the same side. Setup for a sharp reversal when it unwinds.