CoinDesk
About 81,700 BTC options contracts worth $6.44 billion expire Friday. Calls account for 44,639 contracts versus 37,061 puts, producing a 0.83 put-to-call ratio, with max pain at $68,000; the largest call concentrations are $236 million at the $75,000 strike and $157 million at $80,000. BTC has surged from roughly $62,000 to $80,000 in one week, pushing calls below $80,000 into the money. Deribit Chief Risk Officer Shaun Fernando said nearly 20% of Bitcoin open interest on Deribit is set to expire, while the Bitcoin volatility index DVOL has risen 30% relative and call-put skew has flipped from negative to positive.
Why it matters
Options let traders take a view on BTC without buying or selling it outright. A call gives its holder the right to buy BTC at a preset price, while a put gives the right to sell. Both instruments can hedge volatility or amplify a directional view, leaving market makers to manage exposure as expiry approaches.
When open interest clusters near a strike, small spot-price changes can force liquidity providers to adjust hedges more aggressively. Fernando said over half a billion dollars in notional sits within a 5% move of the current price, which could increase gamma hedging around the expiry. The call-heavy positioning points to a bullish bias, but those hedging flows can push in either direction.
Market impact
The $75,000 and $80,000 strikes are the dominant levels for this expiry. Large open interest can create pinning, with BTC gravitating toward a strike as market makers adjust hedges. A decisive break away from that level can instead accelerate the move, Fernando said.
Friday's event is therefore a market-structure test rather than a clean directional call. Traders will be watching whether BTC stays near $80,000 or breaks through the major strikes, along with how volatility pricing responds once the contracts expire. The options book carries a bullish positioning signal, while its concentration raises the prospect of sharper two-sided trading.
Frequently asked questions
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What does the 0.83 put-to-call ratio say about Friday's expiry?
The ratio reflects 44,639 calls against 37,061 puts, so calls outnumber puts and the positioning carries a bullish bias.
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Which strikes carry the most call open interest?
The $75,000 strike holds the largest call open interest at $236 million in notional value, followed by $80,000 at $157 million.
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Why could gamma hedging increase before the Bitcoin options expire?
The rally from roughly $62,000 to $80,000 put calls below $80,000 into the money, while over half a billion dollars in notional sits within a 5% move of the current price. That concentration can require more active hedge adjustments.
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How can large open interest cause BTC price pinning?
Pinning occurs when BTC's spot price gravitates toward a strike with large open interest as market makers adjust hedges. The $75,000 and $80,000 strikes are the main concentrations in this expiry.
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What volatility signals changed ahead of the expiry?
Fernando said volatility term structure shifted from backwardation to contango, DVOL rose 30% relative and call-put skew flipped from negative to positive over the last week.
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