Bitcoin rally restores some confidence, but open interest lags

Bitcoin has staged a comeback. The leverage crowd mostly stayed home.

The world's largest crypto asset climbed approximately 35% from its August 2026 lows around $63,500, reaching the $83,000 to $84,000 range by late September. Futures open interest has not kept pace, however, and remains below its previous high.

Open interest measures the total value of outstanding futures contracts that haven't been closed or settled. When it rises alongside price, traders are piling in with fresh bets. When it falls during a rally, the table is getting quieter even as the score improves.

That second scenario is what played out here. Measured in BTC terms, futures open interest fell nearly 20% during the run-up.

Analysts at Bitfinex flagged that aggregate BTC futures open interest dropped to approximately 625,000 BTC. That marks a significant pullback in leveraged positioning, and a notable low for 2026.

Denominating open interest in BTC rather than dollars is a useful filter. A rising price can inflate dollar-based open interest even if nobody opens a new contract. Counting in coins strips that effect out and shows whether positioning itself is growing or shrinking.

A chunk of that decline traces back to a single day. On August 19, 2026, a liquidation event swept through the derivatives market, with 85% of the liquidations hitting short positions.