Aggregate Bitcoin open interest recorded by Coinalyze reached $28 billion on October 31, 2026, reflecting a 3% increase over 24 hours

The first and largest cryptocurrency, spanning its price and adoption, mining, protocol politics, and its contested role as digital money and inflation hedge.

Futures, options, and perpetual swaps tied to digital-asset prices, letting traders hedge or lever positions and often dwarfing spot volumes.