OI Acceleration

OI Acceleration measures how fast open interest is changing in the current window vs. a rolling baseline. A 1H OI Accel of +18% means OI in the last 60 minutes is 18% above the same-asset rolling baseline.

The formula (intuition first)

OI Accel (window) = (OI_window − OI_baseline) / OI_baseline

• OI_window is the average open interest over the active window (1H / 4H / 24H, controlled by the toggle in Rankings).
• OI_baseline is the rolling baseline for the same asset over a longer prior period.

The exact baseline length differs per window:

Longer baselines for longer windows means the signal stays relative to the asset's own pattern, not the market's. A high-volatility alt needs a higher OI Accel to look unusual than BTC does.

Why this leads price more often than it lags

OI doesn't change without positions being opened or closed. A sudden rise in OI before a price move is the footprint of new positioning — often from a participant who has a reason. By the time the candle moves, the OI rise is already there.

The classic failure mode is OI rising into a sweep, where the positions opened were retail late-longs being filled by exit liquidity, and the move resolves the other way. We can't tell those two apart from OI alone — that's why we cross-reference with CVD and funding.

Limits and caveats

• Cross-exchange OI is only available where the venue publishes it. For pure DEX venues without an OI endpoint we omit the row.
• OI Accel does not tell you direction. A 1H +20% OI Accel means positions are being opened; whether net long or net short you must cross-read with funding (positive funding = longs paying = longs net opening) and CVD (taker direction).
• Stale OI from delisted contracts is filtered out; we drop a symbol from the leaderboard when its 24H volume falls below a small floor.

See also

• CVD — the direction companion to OI Accel.
• Heat Score — composite that combines OI Accel, CVD, liquidations, and funding.