Wintermute, the crypto market-making giant, has begun providing liquidity across Kalshi and Polymarket, the two dominant prediction market platforms. This move directly connects order flow between the competing venues, according to sources close to the arrangement.
The deal marks a strategic shift in how these platforms compete. Rather than operate in isolation, Kalshi and Polymarket now share liquidity infrastructure through Wintermute's market-making operations. Wintermute supplies buy and sell orders on both platforms simultaneously, allowing traders on either venue to access deeper liquidity pools and tighter spreads.
Kalshi operates as a regulated commodities exchange under CFTC supervision, offering event-based contracts on elections, economic data, and real-world outcomes. Polymarket, built on Polygon layer 2, operates as an unregulated peer-to-peer prediction market accessible globally. The two platforms have competed fiercely for trading volume and user adoption, each claiming superiority in either regulatory legitimacy or decentralized accessibility.
Wintermute's liquidity provision represents a practical acknowledgment that both platforms serve different user bases and regulatory regimes. By operating across both, Wintermute captures arbitrage opportunities and volume benefits while giving traders on either platform access to the other's liquidity. This arrangement reduces bid-ask spreads and improves price discovery across both venues.
The move comes as prediction markets have experienced explosive growth. Election betting and event-based contracts have drawn institutional interest and retail participation, with Polymarket posting record volumes during major political events. Kalshi has expanded its contract offerings aggressively while navigating regulatory oversight.
Wintermute, which has recovered from its 2022 hack that resulted in a $160 million loss, continues rebuilding its market-making presence across multiple protocols and venues. The firm operates market-making operations on centralized exchanges, DEXs, and derivatives platforms, positioning itself as infrastructure for liquidity.
This liquidity connection between Kalshi and Polymarket signals that the prediction market sector has matured enough to support shared infrastructure arrangements. Rather than winner-take-