A significant development occurred on Friday, marking the accelerated institutionalization of the bitcoin market, which has been driven by individual investors for years. This 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. 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 (OI) of IBIT options contracts on Nasdaq reached $27.61 billion, slightly higher than Deribit's $26.90 billion, 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 is expected to encourage 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.
Analysts use open interest to measure 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. One popular strategy involving IBIT ETF and IBIT options is the covered call strategy, which allows investors to profit from BTC's implied volatility.
The two markets, IBIT and Deribit, now match each other in scale but differ in positioning, revealing 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.
The positioning in Deribit options is more conservative, with call open interest clustered around $106,000 in BTC terms. The onshore call OI 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 and longer-horizon ETF investors onshore. Lastly, IBIT's implied volatility is higher than Deribit's, due to a structural quirk where ETF holders cannot easily short bitcoin directly, leading to demand for put options and elevated implied volatility.
Overall, IBIT's rapid rise in the options market is notable, and the two markets are not direct substitutes, with IBIT catering to regulated, onshore investors and Deribit serving global investors.