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

A notable development occurred on Friday, signaling the rapid growth of institutional involvement in the bitcoin market, which has long been driven by individual investors. This is evident in the fact that options linked to BlackRock's bitcoin exchange-traded fund (ETF), IBIT, have surpassed the total bitcoin options trading on the offshore platform Deribit. 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 exceeding the $26.90 billion in Deribit's bitcoin options, 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 thriving, regulated market in the US may 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 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 on coin or ETF holdings. The covered call strategy is a popular income-generating approach involving IBIT ETF and IBIT options, allowing investors to profit from BTC's implied volatility. Although the two markets now match in scale, they differ in positioning, revealing distinct trader sentiment. According to Volmex, the majority 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 slightly more conservative, with call open interest clustered around levels equivalent to roughly $106,000 in BTC terms. The onshore call open interest is concentrated roughly 4 percentage points further out-of-the-money than offshore, 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 options are approximately two months longer-dated on an OI-weighted basis, reflecting the underlying holder base of longer-horizon ETF investors onshore versus more tactical positioning offshore. Lastly, IBIT's implied volatility is higher than the implied volatility derived from Deribit's BTC options, 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 the two markets are not direct substitutes, with IBIT options catering to regulated, onshore investors and Deribit remaining the go-to platform for global investors.