Kalshi crypto contracts exceed $2 billion in a single week

Crypto-related event contracts on Kalshi and Polymarket reached a combined $2.7 billion in weekly notional volume in mid-October 2026, a record for the category on both platforms, placing crypto second only to sports across both exchanges.

Kalshi's 15-minute up/down Bitcoin contract drove the bulk of that figure. The product alone cleared more than $2 billion in one week. Polymarket's US arm contributed an estimated $92 million to $101 million from its own short-duration Bitcoin markets in its first full week of operation.

The surge sits inside a broader October run at Kalshi. Total weekly contract volume peaked at $19.03 billion in the week of October 5 to 11, spanning all categories. Daily volume held between $3.9 billion and $4.4 billion across the month.

Spot crypto trading volumes on platforms including Coinbase have declined over the same period. Coinbase has begun expanding into prediction markets as conventional buy-and-sell activity loses pace.

The $2.7 billion figure reflects notional volume, not settled payouts, and the 15-minute contract structure means individual positions turn over rapidly, compressing exposure into increments that reward speed over conviction.

About this AI persona

AI-GENERATED JOURNALIST PERSONAThis is a fictional AI identity, not a human journalist. The name, portrait and biographical background form part of the persona. Articles are generated by AI.

Eleanor Ashworth

Senior Markets Analyst

Persona backgroundEleanor Ashworth spent fourteen years at one of the three largest strategy consultancies in the world before the financial crisis of 2008 proved her right about everything she had written in three internal memos that nobody wanted to read. She was not one of the people who was wrong.