BlackRock's Bitcoin ETF Achieves Major Milestone, Solidifying Crypto's Mainstream Presence

A notable development occurred on Friday, indicating the rapid institutionalization of the bitcoin market, which has been driven by individual investors for years. This is due to the growth of options linked to BlackRock's bitcoin exchange-traded fund (ETF), IBIT, which have become slightly larger on Nasdaq than the total bitcoin options trading on the offshore platform Deribit. It is striking that 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 dollar value of open IBIT options contracts on Nasdaq, also known as open interest, reached $27.61 billion, surpassing the $26.90 billion in Deribit's bitcoin options, according to data from Volmex. This milestone signifies that the regulated, institutional-grade bitcoin investment and derivatives infrastructure in the US is no longer secondary to the offshore market. Furthermore, 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. 'US retail cannot access platforms like Deribit, so iShares Bitcoin Trust (IBIT) options provide them with direct access to regulated leverage and options exposure,' Fariq explained. Options are derivative contracts that grant the purchaser the right to buy or sell the underlying asset at a predetermined price at a later date. 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 from 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 by holding the ETF and shorting IBIT calls at levels above the ETF's current market price. Although the two markets now match in scale, they are positioned differently, 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, roughly 41% above the current price. In contrast, Deribit options positioning is more conservative, with call open interest clustered around levels equivalent to approximately $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. Lastly, IBIT's implied volatility is higher than the implied volatility derived from Deribit's BTC options, which Volmex attributes to a structural quirk where ETF holders cannot easily short bitcoin directly and instead buy put options as a hedge. Overall, IBIT's rapid rise in the options market is striking, and while it now rivals Deribit in scale, the two are not direct substitutes, as IBIT options primarily cater to regulated, onshore investors accessing bitcoin exposure through traditional brokerage channels.