BlackRock's Bitcoin ETF Reaches Major Milestone, Solidifying Crypto's Mainstream Status

A significant development occurred on Friday, marking the accelerating pace of institutional investment 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 Deribit, a major offshore platform, in terms of open interest on Nasdaq. Notably, IBIT options have bridged the gap with Deribit's bitcoin options market, which has been in operation since 2016, in just two years. On Friday, the open interest in IBIT options contracts on Nasdaq stood at $27.61 billion, slightly higher than 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 now on par with 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 investors can access regulated leverage and options exposure through iShares Bitcoin Trust (IBIT) options, which is further driven by the current macro environment of supply chain uncertainty, energy shocks, and geopolitical risks, naturally increasing demand for hedging and options strategies,' Fariq stated. 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 as a measure of 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 differ in shape, 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, roughly 41% above the current price. In contrast, Deribit options positioning is slightly more conservative, with call open interest clustered around levels equivalent to approximately $106,000 in BTC terms. 'Onshore call OI is concentrated roughly 4 percentage points further out-of-the-money than offshore, and the onshore average delta is slightly lower, consistent with onshore flow being dominated by retail upside speculation and systematic call overwriting programs,' Volmex noted. Put positioning is largely aligned across venues, with open interest concentrated around the $63,500 strike. ETF holders tend to be more patient, with options having expiry dates that depend on the price of IBIT or spot BTC at that time. Analysis of activity across both markets suggests that, on average, October 2026 expiries are 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,' Volmex observed. Lastly, IBIT's implied volatility is higher than the implied volatility derived from Deribit's BTC options, which Volmex attributes to a structural quirk: ETF holders cannot easily short bitcoin directly, so they buy put options as their only available hedge, keeping IBIT's implied volatility slightly elevated. Overall, IBIT's rapid rise in the options market is striking and now appears to rival Deribit in scale. However, the two are not direct substitutes, as IBIT options primarily cater to regulated, onshore investors accessing bitcoin exposure through traditional brokerage channels, while Deribit remains the go-to platform for global investors. 'I don't see this as competition; it expands the market. As more participants get comfortable trading options via IBIT, it ultimately feeds into the broader ecosystem, and venues like Deribit benefit from increased sophistication and flow,' Fariq said.