[Bitcoin options daily] Open interest reaches $37.70 billion; $72,000 puts lead volume

Bitcoin options open interest rose 0.85% to $37.70 billion, with calls accounting for the larger share of both outstanding positions and trading volume. A $72,000 put led trading activity, indicating demand for downside exposure alongside call positioning.

Calls dominated the outstanding-position rankings, while the most actively traded contracts included both puts and calls.

As of October 27, 2026, at 11:20 UTC, total Bitcoin options open interest stood at $37.70 billion, up from $37.38 billion in the previous reading. Options trading volume totaled approximately $2.55 billion.

Calls represented 59.34% of open interest and puts 40.66%. In 24-hour trading volume, calls accounted for 52.45% and puts 47.55%.

The call share was higher in outstanding positions than in trading volume. The narrower gap between calls and puts in trading activity, together with a put leading the volume rankings, suggests a mix of upside exposure and downside positioning.

The three largest contracts by open interest were all on Deribit: the $95,000 call expiring October 30, 2026; the $100,000 call with the same expiry; and the $90,000 call with the same expiry, in that order.

The leading contracts by 24-hour volume were Deribit's $72,000 put expiring December 25, 2026; its $90,000 call expiring December 25, 2026; and its $95,000 call expiring November 27, 2026, respectively.

[Editor's note] Options are derivatives used to take leveraged exposure to an underlying asset or hedge existing positions. Calls give holders the right to buy at a predetermined price, while puts give holders the right to sell. Open interest measures outstanding contracts and indicates the accumulated size of positions.

Comparing call and put shares across open interest and volume helps distinguish accumulated positioning from recent trading activity. Rising open interest indicates an increase in outstanding contracts, but call dominance alone does not establish a directional outlook: options can also form part of hedges or broader trading strategies.