A significant development occurred on Friday, marking the accelerating institutionalization of the bitcoin market, which has been driven by individual investors for years. This is evident in the growth of options linked to BlackRock's bitcoin exchange-traded fund (ETF), IBIT, which have surpassed the total bitcoin options trading on the offshore platform Deribit. Notably, IBIT options have bridged the gap with Deribit's bitcoin options market in just two years, despite Deribit's head start since 2016. On Friday, the open interest in IBIT options contracts on Nasdaq reached $27.61 billion, slightly higher than Deribit's $26.90 billion, according to data from Volmex.
This milestone signifies that the regulated, institutional-grade bitcoin investment and derivatives infrastructure in the US is now on par with the offshore market. The emergence of a thriving, regulated market in the US could encourage more Wall Street institutions to explore digital assets, ultimately leading to more mature price discovery. Deribit's Global Head of Retail Sales and Business, Sidrah Fariq, views IBIT's rise as a positive development for the broader crypto derivatives ecosystem, providing US retail investors with direct access to regulated leverage and options exposure. Options are derivative contracts that grant the purchaser the right to buy or sell the underlying asset at a predetermined price.
Analysts use open interest to measure market size and participation, with higher open interest indicating a deeper and more liquid market. Traders utilize options to hedge existing positions, speculate on price direction, and generate income on coin or ETF holdings. One popular income-generating strategy involving IBIT ETF and IBIT options is the covered call strategy, which allows investors to profit from BTC's implied volatility. The two markets, although now matching in scale, differ in positioning, revealing insights into trader sentiment.
According to Volmex, the bulk of open interest in IBIT call options is concentrated at strike levels equivalent to bitcoin trading around $109,709. In contrast, Deribit options positioning is more conservative, with call open interest clustered around levels equivalent to roughly $106,000 in BTC terms. The average delta is slightly lower for onshore flow, consistent with retail upside speculation and systematic call overwriting programs.
Put positioning is largely aligned across venues, with open interest concentrated around the $63,500 strike. ETF holders tend to be more patient, with October 2026 expiries preferred in IBIT, while August expiries dominate on Deribit. Lastly, IBIT's implied volatility is higher than Deribit's, attributed to a structural quirk where ETF holders cannot easily short bitcoin directly, leading to increased demand for put options. Overall, IBIT's rapid rise in the options market is striking, and while it may rival Deribit in scale, the two are not direct substitutes, catering to different investor bases.