BlackRock's iShares Bitcoin Trust options open interest topped $27.61 billion on Friday, officially surpassing the total bitcoin options trading volume on offshore giant Deribit at $26.90 billion. The milestone, tracked by decentralized crypto volatility protocol Volmex, signals that regulated, institutional-grade bitcoin investment and derivatives infrastructure in the U.S. has reached parity with—and now eclipsed—the dominant offshore market that has operated since 2016.
Market Context
The achievement comes as bitcoin trades near $77,400 to $78,037, having experienced a brief dip of about $100 late Friday morning after former President Donald Trump said he halted a planned diplomatic trip tied to Iran talks. The broader crypto derivatives ecosystem has seen explosive growth in 2026, with Wall Street institutions increasingly seeking regulated pathways to digital asset exposure.
Analysis
What makes IBIT's rise particularly striking is the speed of adoption. In just two years, BlackRock's ETF options have closed the gap with Deribit's bitcoin options market, which has spent nearly a decade building its user base and liquidity. Sidrah Fariq, Deribit's Global Head of Retail Sales and Business, described IBIT's ascent as a net positive for the broader crypto derivatives ecosystem.
"US retail can't onboard platforms like Deribit, so iShares Bitcoin Trust options give them direct access to regulated leverage and options exposure," Fariq told CoinDesk. "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."
The two markets now match in scale but reveal distinct positioning characteristics. According to Volmex data, IBIT call options show open interest concentrated at strikes equivalent to BTC trading at $109,709—roughly 41% higher than current levels. Deribit's positioning is bullish but more 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," Volmex noted in its report. "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."
Key Numbers
- IBIT options open interest: $27.61 billion on Friday
- Deribit bitcoin options open interest: $26.90 billion
- Current BTC price: ~$77,400 to $78,037
- Implied upside target via IBIT calls: $109,709 (approximately 41% above current price)
- Implied upside target via Deribit calls: $106,000
- IBIT options average expiry preference: October 2026
- Deribit options average expiry preference: August 2026
What to Watch
Traders should monitor whether the implied volatility premium in IBIT—stemming from structural demand for put options as ETF holders' primary hedging tool—continues to attract institutional flow. The two-month longer-dated positioning preference in IBIT versus Deribit suggests a bifurcated market: patient, long-horizon ETF investors onshore, versus more tactical positioning offshore. Fariq indicated this represents expansion rather than competition: "As more participants get comfortable trading options via IBIT, it ultimately feeds into the broader ecosystem." Upcoming catalysts include any further comments from Trump regarding his crypto conference in Palm Beach and macro developments affecting risk appetite.