Bitcoin Options Open Interest Jumps to $60B as Call Share Slides to ~60%

Bitcoin's derivatives market is increasingly being driven by options rather than futures. Notional open interest in BTC options has risen to about $60 billion, roughly 10 times higher than five years ago, and it now frequently exceeds open interest in Bitcoin futures. Positioning inside that $60 billion highlights a notable shift in behavior. Calls now account for just under 60% of open interest, down from around 70% two years ago. A 70% call share typically signals a market heavily skewed toward upside bets. With the put/call open interest ratio now ranging between 0.7 and 0.84, the current mix points more toward hedging activity. Deribit remains the leading crypto options venue. It posted BTC options open interest of $31.3 billion in May 2026. At the market's late-2025 peak, Deribit alone recorded figures above $50 billion. CME has also been expanding in crypto options, adding competition that can narrow spreads and improve execution. Data from analytics providers such as Checkonchain indicates options open interest has consistently run ahead of futures since mid-2025. Several forces are pushing this rotation toward options. Greater institutional participation has brought investors focused on portfolio construction and risk controls rather than high-leverage directional trades. Spot Bitcoin ETFs have also created large pools of capital with ongoing hedging needs. At the same time, options market infrastructure—liquidity, pricing, and the broader trading stack—has matured enough to support sustained institutional-scale flow. The declining call share also reflects a change in how options are being used. In the 2021 cycle, activity leaned heavily toward out-of-the-money calls—effectively lottery-ticket upside exposure. The current market appears more balanced across strategies, including covered calls, protective puts, spreads, and more complex structures that rely on a functioning volatility surface. For investors, the higher put/call ratio can open opportunities in volatility trading. Stronger demand for downside protection may lift implied volatility on puts and steepen downside skew, creating potential setups through trades such as risk reversals or ratio spreads. Market structure is also becoming more important. Deribit's $31.3 billion in open interest keeps it in the lead, while CME's growing presence brings regulated infrastructure that many institutional allocators prefer. The expanding options market adds a separate layer of risk dynamics. With roughly $60 billion in notional open interest, large expiries can influence spot behavior, sometimes drawing prices toward key strikes around monthly and quarterly expirations. The "max pain" effect tends to become more visible as open interest grows. A put/call ratio of 0.7 to 0.84 is close to levels commonly seen in mature equity options markets. Taken together with the 10x rise in open interest over five years and options surpassing futures, the data suggests Bitcoin derivatives are shifting from primarily leveraged speculation toward broader risk management.