Open Interest (OI)
The number of derivative contracts that remain open. Rising OI shows expanding participation; falling OI shows contracts are being closed or settled.
Price vs OI
Configure Analysis Controls
Select a symbol and expiry date to view the price-vs-OI relationship.Price Structure
Track directional price behavior and turning points across selected sessions.
OI Participation
Quantify commitment behind moves through open-interest expansion and contraction.
Correlation Lens
Identify divergence and confirmation between price action and positioning changes.
Price and open interest education
How to Read Price vs Open Interest
Price vs OI analysis combines the direction of the underlying or futures price with the change in open interest. The pairing helps traders judge whether a move is attracting fresh positions or is being driven by existing positions closing.
Most important nuance
Open interest measures outstanding contracts, not whether traders are bullish or bearish by itself. Interpret an OI change only after checking price direction, the selected expiry, liquidity, rollover activity, and whether the move persists across more than one interval.
What the analysis tells you
1
Long buildup
Price rising with OI rising usually indicates fresh long participation. Persistence and volume confirmation matter more than one isolated bar.
2
Short buildup
Price falling with OI rising commonly points to fresh short participation and stronger downside commitment.
3
Short covering
Price rising while OI falls suggests shorts are closing. The rally may be sharp, but it is not automatically fresh bullish positioning.
4
Long unwinding
Price falling while OI falls suggests existing longs are exiting rather than new shorts necessarily entering.
Key terms and interpretation
Combined Expiries
A broader positioning view across active contracts. It can reduce front-month rollover distortion, but it should not replace checking each expiry separately before execution.
Price–OI Divergence
A mismatch between price momentum and participation. For example, price making a new high while OI contracts can indicate covering or weakening commitment.
Rollover Effect
Near expiry, positions may move from the current contract to the next one. Falling front-month OI can therefore reflect migration rather than a directional exit.
How to use this tool
- Step 1
Confirm the contract context
Select the asset, symbol, expiry, and date. Use comparable timestamps and avoid mixing thin contracts with highly liquid ones.
- Step 2
Classify the current regime
Compare the direction of price with the direction of OI to identify buildup, covering, or unwinding.
- Step 3
Check persistence and participation
Look for the same relationship across several intervals and confirm it with volume and meaningful absolute OI change.
- Step 4
Plan risk around price structure
Use support, resistance, volatility, and invalidation levels for execution. Treat the Price vs OI label as context, not a standalone entry signal.
Frequently asked questions
Does rising OI always mean the market is bullish?
No. Rising OI only means more contracts are open. Rising price with rising OI is commonly read as long buildup, while falling price with rising OI is commonly read as short buildup.
Why can the signal change near expiry?
Traders close expiring contracts and roll exposure into later expiries. Review individual and combined-expiry views to separate rollover from genuine directional change.
Which confirmation is most useful?
Persistence across intervals, adequate volume, and agreement with the underlying price structure are generally more useful than a single large percentage change.