Bitcoin options OI reaches $37.86B; $82,500 call leads daily volume

Bitcoin options open interest rose 0.14% to $37.86 billion, with medium-term positioning favoring calls while short-term trading tilted toward puts. Bitcoin options showed a bullish bias in medium-term positioning. Daily trading, however, reflected stronger demand for downside protection. As of Oct. 18, 2026, total Bitcoin options open interest stood at $37.86 billion, up 0.14% from $37.81 billion previously. Options trading volume totaled about $1.18 billion. Calls accounted for 59.78% of open interest and puts for 40.22%. By 24-hour volume, calls represented 47.99% and puts 52.01%. The call-heavy open-interest mix indicated that accumulated positioning leaned bullish. The higher share of puts in trading volume, meanwhile, suggested near-term hedging demand against volatility. The largest open-interest contracts were the $95,000 call expiring Oct. 30 on Deribit, the $90,000 call expiring Oct.

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