Bitcoin Open Interest Surges to 109-Day High Amid Price Rally

Bitcoin (BTC) Open Interest (OI) – the financial equivalent of a crowded house party where everyone's brought collateral – has climbed to its loftiest level in 109 days, hitting $64.7 billion at press time on May 5, according to CoinGlass data analyzed by Finbold. The flagship cryptocurrency's derivatives market has been staging a slow recovery since bottoming out at roughly $43.04 billion on March 2, with OI injecting more than $10 billion of fresh fuel over the past five days.

In just 24 hours, Bitcoin OI jumped nearly 11% from $60.98 billion. Binance commanded the bulk of BTC's OI at approximately $11.89 billion – a 13.48% spike in a single day – while the scrappy MEXC exchange logged the most aggressive daily uptick at around 21%, climbing to roughly $6.95 billion at publication time.

The timing couldn't be weirder: right on cue, BTC price climbed 2.46% over the past 24 hours, landing at $81,550. Naturally, this pushed the flagship coin's market capitalization to a beefy $1.6 trillion – the kind of number that makes spreadsheets nervous.

Here's where things get spicy. Despite the OI surge, most Bitcoin traders seem convinced a pullback is incoming. The Funding Rate – essentially a recurring fee designed to keep perpetual contract prices tethered to the underlying asset – dropped to its lowest point since April 23, per CoinGlass. Rising OI combined with increasingly negative funding rates is the market's way of whispering that more derivative players have quietly shifted to the bearish camp.

Meanwhile, the recent Bitcoin price uptick – possibly turbocharged by a short squeeze – has spot traders rushing for the exit, locking in profits like it's Black Friday. After BTC breezed past $80,000, holders banked their highest daily profit since December 10, 2025, according to data from CryptoQuant. Because nothing says "bullish conviction" like selling the dip the nanosecond it appears.