Bitcoin’s options market has quietly become the main event. Open interest in BTC options has climbed to roughly $60 billion in notional value, a tenfold increase over the past five years, and it now regularly surpasses Bitcoin futures open interest.

The numbers behind the shift

Look at the composition of that $60 billion and you’ll see something interesting. The share of call options has slipped to just under 60%, down from around 70% two years ago. A 70% call share screams “everyone is betting prices go up.” A 60% call share, with the put/call open interest ratio now sitting between 0.7 and 0.84, says something different: traders are actually hedging.

Deribit, the dominant venue for crypto options, recorded BTC options open interest of $31.3 billion in May 2026. At its peak in late 2025, Deribit alone saw figures exceeding $50 billion. CME has also been expanding its presence in the space, adding competitive pressure that tends to tighten spreads and improve execution for everyone involved.

Data from analytics firms like Checkonchain confirms that options open interest has consistently outpaced futures since mid-2025.

Why options are eating futures’ lunch

The migration toward options reflects a few converging trends. Institutional adoption has brought in players who think in terms of portfolio construction rather than 100x longs. The arrival of spot Bitcoin ETFs created massive pools of capital that need hedging. And the options infrastructure itself, from liquidity to pricing models, has matured enough to handle serious flow.

The declining call share also points to a subtler dynamic. In the 2021 era, options activity was heavily skewed toward out-of-the-money calls, essentially lottery tickets on Bitcoin moonshots. The current mix suggests traders are using options across the entire strategy spectrum: covered calls, protective puts, spreads, and more complex structures that require a functioning volatility surface.

What this means for investors

For active traders, the elevated put/call ratio creates opportunities in volatility strategies. When hedging demand for puts rises, it can inflate implied volatility on the downside, creating skew that skilled traders can exploit through structures like risk reversals or ratio spreads.

The competitive dynamics between Deribit, CME, and emerging venues also deserve attention. Deribit’s $31.3 billion in open interest makes it the clear leader, but CME’s growing footprint brings regulated infrastructure that many institutional allocators require.

There’s a risk angle too. A $60 billion options market creates its own gravitational pull. Large options expiries can pin prices to specific strike levels, creating unusual price action around monthly and quarterly expiration dates. The phenomenon, known as “max pain” in options parlance, becomes more pronounced as open interest grows.

The put/call ratio between 0.7 and 0.84 is strikingly close to what you’d see in mature equity options markets. The tenfold growth in open interest over five years tracks with the broader institutionalization thesis. And the fact that options have overtaken futures suggests the market’s dominant use case has shifted from leveraged speculation to risk management.