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Wintermute, a London-based algorithmic trading firm with more than $3.5 trillion in annual trading volume, said on Friday it is now providing two-sided liquidity on prediction markets, becoming the latest institutional market maker to plug into a sector that has cleared more than $60 billion in trading volume so far in 2026.
The firm is "quoting two-sided markets across event contracts on leading venues," it said in a blog post, citing more than $20 billion in monthly volume across those venues as of early 2026. A person familiar with the matter told Decrypt the venues include Polymarket and Kalshi, the two largest event-contract platforms.
Wintermute's role is as a market maker, not a bettor. It is posting continuous bid and offer prices to tighten spreads and absorb large orders, rather than taking directional positions on contract outcomes.
