BlackRock’s bitcoin ETF just hit a massive milestone that proves crypto is now a mainstream bet

Something notable happened on Friday, indicating the accelerating institutionalization of the bitcoin BTC$77,557.88 market, which has been pioneered by everyday people for years.

This is because options, or hedging instruments, linked to BlackRock's bitcoin exchange-traded fund (ETF), IBIT, have grown slightly larger on Nasdaq than total bitcoin options trading on the offshore giant Deribit. It is particularly striking that IBIT options have, in just two years, closed the gap with Deribit’s bitcoin options market, which has been operating since 2016.

On Friday, the dollar value of open or active IBIT options contracts on Nasdaq, the so-called open interest (OI), was $27.61 billion, slightly higher than the $26.90 billion in Deribit's bitcoin options, according to data tracked by decentralized crypto volatility protocol Volmex.

This milestone indicates that the regulated, institutional-grade bitcoin investment and derivatives infrastructure in the U.S. is no longer second fiddle to the offshore market. Moreover, a booming, regulated market in the U.S. could embolden 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, described IBIT’s rise as a net positive for the broader crypto derivatives ecosystem.

"US retail can't onboard platforms like Deribit, so iShares Bitcoin Trust (IBIT) options give them direct access to regulated leverage and options exposure. This is further supported by the current macro environment with supply chain uncertainty, energy shocks, and broader geopolitical risks, which naturally drives demand for hedging and options strategies," Fariq told CoinDesk.

What are options?

Options are derivative contracts that give the purchaser the right to buy or sell the underlying asset at a predetermined price at a later date. Think of it as paying a token price to reserve the right to buy or sell the property at a pre-agreed specific price in the future. A call option gives the right to buy and represents a bullish bet, while a put option gives the right to sell.

Analysts use open interest as the measure of market size and participation – the higher the open interest, the deeper and more liquid the market.

Traders use options to hedge existing positions in the spot and futures markets, speculate on price direction, and generate additional income on coin/ETF holdings.

One of the most preferred income-generating strategies involving IBIT ETF and IBIT options is the covered call strategy. It allows investors to profit from BTC's implied volatility by simultaneously holding the ETF and shorting IBIT calls at levels well above the ETF's current market price.

Traders holding actual BTC have been doing this via Deribit for years.

Same in size but different in shape

The two markets, though, now match each other in scale but are positioned differently, revealing a lot about trader sentiment in each.

Positioning in IBIT options vs Deribit BTC options. (Volmex)

According to Volmex, the bulk of open interest in IBIT call options points to expectations of an ETF rallying to levels equivalent to BTC trading at $109,709 in the near-term. That's roughly 41% higher than the current market price of $77,400.

Positioning in Deribit options is bullish but slightly measured, suggesting expectations of a rally to $106,000.

"Onshore call OI is concentrated roughly 4 percentage points further out-of-the-money than offshore, and the onshore average delta is slightly lower. This is consistent with onshore flow being dominated by retail upside speculation and systematic call overwriting programs, both of which concentrate OI in further-OTM strikes," Volmex said in a report shared with CoinDesk.

ETF holders are more patient

Options have expiry dates – the point at which contracts are settled, depending on where IBIT or spot BTC is trading 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. The gap is roughly symmetric across puts and calls, suggesting it reflects the underlying holder base, longer-horizon ETF investors onshore versus more tactical positioning offshore, rather than asymmetric demand for protection or upside," Volmex noted.

Lastly, IBIT’s implied volatility – a metric that measures expected swings in the BTC-linked ETF over the next four weeks – is higher than the implied volatility derived from Deribit’s BTC options.

Volmex attributes this premium to a structural quirk: Because ETF holders cannot easily short (express a bearish view) bitcoin directly, they buy put options as their only available hedge. This demand for put options is keeping IBIT's implied volatility slightly elevated.

All things considered, IBIT’s rapid rise in the options market is striking and, in many ways, 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 place for global investors.

"I don’t see this as competition. If anything, 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.