A significant development occurred on Friday, highlighting the rapid institutionalization of the bitcoin market, which has long been driven by individual investors. 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 Deribit, a major offshore player. Notably, IBIT options have closed 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 indicates that the US is no longer secondary to the offshore market in terms of regulated, institutional-grade bitcoin investment and derivatives infrastructure. The rise of IBIT options is expected to embolden more Wall Street institutions to explore digital assets, leading to more mature price discovery. Deribit's Global Head of Retail Sales and Business, Sidrah Fariq, views IBIT's growth 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 an 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 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, IBIT and Deribit, now match each other in scale but differ in shape, revealing distinct 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's call open interest is clustered around levels equivalent to roughly $106,000 in BTC terms.
The onshore call open interest is concentrated further out-of-the-money than offshore, consistent with onshore flow being dominated by retail upside speculation. Put positioning is largely aligned across venues, with open interest concentrated around the $63,500 strike. ETF holders tend to be more patient, with IBIT options expiries preferred in October 2026, while Deribit's expiries dominate in August.
The implied volatility of IBIT options is higher than that of Deribit's BTC options, attributed to a structural quirk where ETF holders cannot easily short bitcoin directly. 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. According to Fariq, this development expands the market, increasing sophistication and flow, and ultimately benefiting venues like Deribit.