A notable development occurred on Friday, indicating the accelerating pace of institutional investment in 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 become slightly larger than 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, surpassing the $26.90 billion in Deribit's bitcoin options, according to data from Volmex. This milestone signifies that the US-based, institutional-grade bitcoin investment and derivatives infrastructure is no longer secondary to the offshore market. Furthermore, 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.
'US retail investors cannot access platforms like Deribit, so iShares Bitcoin Trust (IBIT) options provide them with direct access to regulated leverage and options exposure. This is further supported by the current macro environment, with supply chain uncertainty, energy shocks, and geopolitical risks, which drives 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 on 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 each other 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, positioning in Deribit options is more conservative, with call open interest clustered around levels equivalent to roughly $106,000 in BTC terms. The average delta is slightly lower for onshore call open interest, 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. Notably, ETF holders tend to have a longer investment horizon, with October 2026 expiries preferred in IBIT, while August expiries dominate on Deribit.
The implied volatility of IBIT options is higher than that of Deribit's BTC options, which Volmex attributes to the structural quirk of ETF holders being unable to easily short bitcoin directly. As a result, 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 it 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. If anything, it expands the market. As more participants become comfortable trading options via IBIT, it ultimately feeds into the broader ecosystem, and venues like Deribit benefit from increased sophistication and flow,' Fariq said.