BlackRock's Bitcoin ETF Reaches Significant Milestone, Solidifying Crypto's Mainstream Presence

A notable development occurred on Friday, highlighting the rapid institutionalization of the bitcoin market, which has long been driven by individual investors. This shift 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. In just two years, IBIT options have closed the gap with Deribit's bitcoin options market, which has been in operation since 2016. On Friday, the open interest in IBIT options contracts on Nasdaq reached $27.61 billion, slightly higher than the $26.90 billion in Deribit's bitcoin options, according to data from Volmex. This milestone indicates that the regulated, institutional-grade bitcoin investment and derivatives infrastructure in the US is now on par with the offshore market. 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 give the purchaser the right to buy or sell an underlying asset at a predetermined price at a later date. Analysts use open interest as a measure of market size and participation, with higher open interest indicating a deeper and more liquid market. Traders use options to hedge existing positions, speculate on price direction, and generate income on coin or ETF holdings. The covered call strategy, which involves holding the ETF and shorting IBIT calls, is a popular income-generating strategy. 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, while Deribit's call open interest is clustered around levels equivalent to roughly $106,000 in BTC terms. The average delta of onshore call options is slightly lower, consistent with onshore flow being dominated by 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. IBIT's implied volatility is higher than Deribit's, due to a structural quirk that makes it difficult for ETF holders to short bitcoin directly, leading to increased demand for put options. Overall, IBIT's rapid rise in the options market is striking, and its growth is expected to expand the market, ultimately benefiting venues like Deribit.