# [Bitcoin options] Open interest at $550.03 million as puts lead 24-hour trading By Riza Dagoc Canonical URL: https://www.tokenpost.com/news/investing/44677 Published: 2026-10-30T12:42:26.000Z Updated: 2026-10-30T12:42:26.000Z Section: Investing > Bitcoin options expiring October 31 had $550.03 million in open interest and a put/call ratio of 1.24. Across all expiries, puts led 24-hour trading with a volume ratio of 1.62. Calls led open interest across Bitcoin options expiries, while puts dominated trading over the past 24 hours. The October 31 expiry showed a heavier concentration of puts in both outstanding positions and trading. The put/call open-interest ratio across all expiries stood at 0.70, compared with a 24-hour trading ratio of 1.62, highlighting the difference between accumulated positions and recent activity. As of October 30 at 12:41 UTC, options expiring on October 31 had 7,120 outstanding contracts with a notional value of approximately $550.03 million. Call open interest for that expiry totaled 3,172 contracts, compared with 3,948 puts, producing a put/call ratio of 1.24. Puts also led trading in the October 31 contracts, with 4,711 contracts traded against 2,034 calls. The trading put/call ratio was 2.32, showing a stronger put bias in recent activity than in outstanding positions. The maximum-pain price—the strike associated with the greatest aggregate loss for option buyers at expiry—was $80,000 for the October 31 expiry. Open interest for that expiry was largest in the $77,000 put, followed by the $82,500 call and the $81,000 call. The concentration spanned strikes below and above the underlying price of $77,247.91. ![ Bitcoin options Open interest at $550.03 million as puts lead 24-hour trading]() Across all expiries, the $90,000 call had the most open interest, followed by the $80,000 call and the $60,000 put. Total open interest stood at 287,008 contracts, with a notional value of $22.17 billion. Most-traded option contracts over 24 hours Put trading totaled 34,218 contracts over the past 24 hours, compared with 21,154 calls. The put/call volume ratio of 1.62 showed that puts accounted for more of the period's trading activity. Most-traded options $74,000 put expiring November 13; $75,000 put expiring November 1; $75,000 put expiring November 27; $64,000 put expiring November 27; and $71,000 put expiring November 27. Expiries with concentrated open interest December 25, with calls accounting for 60%; November 27, 60%; and March 26, 61%. Most-active expiries by volume November 27, with calls accounting for 39%; November 13, 30%; and October 31, 30%. Bitcoin traded at $77,404, down 3.38% over 24 hours. [Editor's note] Options are derivatives used to take positions on an underlying asset's price or hedge existing exposure. Calls give buyers the right to buy at a predetermined price, while puts give buyers the right to sell. Open interest measures outstanding option contracts.