JustChartsWhat Is Open Interest? How to Read It With Price and Volume
Open interest is the total number of futures or options contracts that are still open — not yet closed, settled or liquidated. Unlike volume, which counts every trade, open interest shows how much money is committed to positions. Rising open interest with a rising price suggests new buyers are driving the move; falling open interest suggests positions are being closed.
Key facts
- Open interest
- contracts currently open
- Volume
- contracts traded in a period
- Price up + OI up
- new longs entering — trend backed by new money
- Price up + OI down
- short covering
- Sharp OI drop
- often liquidations or mass closing
Open interest vs volume
If trader A opens a long and trader B opens the short on the other side, open interest rises by one contract and volume by one. If A later sells that contract to trader C, volume rises again but open interest is unchanged — the position just changed hands. If A closes against B’s closing trade, open interest falls.
Reading open interest with price
| Price | Open interest | Common reading |
|---|---|---|
| Up | Up | New longs — move backed by fresh money |
| Up | Down | Shorts covering — rally may lack follow-through |
| Down | Up | New shorts — selling pressure building |
| Down | Down | Longs closing or being liquidated |
Open interest in crypto
In crypto perpetual futures, very high open interest combined with extreme funding rates shows a crowded, leveraged market. When price moves against the crowd, a cascade of liquidations can flush that open interest out in minutes, causing long wicks.
Limitations
Open interest doesn’t tell you whether the new positions are long or short — every contract has both a buyer and a seller. Combine it with price, funding and liquidation data rather than reading it alone.
Frequently asked questions
Is high open interest bullish or bearish?
Neither by itself. It shows how much money is committed; the direction comes from price action and funding rates.
What does falling open interest mean?
Positions are being closed or liquidated. During a sharp move it often signals a flush-out of leveraged traders.
Where can I see open interest?
Futures exchanges publish it for each contract, and many charting and crypto data platforms show it alongside price.
Put it into practice
Live charts, an economic calendar and trading calculators — free with a JustCharts account.
Watch liquidations liveThis article is for education only and is not financial advice. Trading leveraged products carries a high risk of losing money. Contract sizes, trading hours and leverage limits vary by broker and country — always check your own broker’s specifications.