Wintermute, a crypto market maker, is now providing liquidity on both Kalshi and Polymarket — the two biggest prediction markets. By linking flows between the platforms, the firm aims to improve price efficiency and deepen order books.
Why a single liquidity provider matters
Market makers like Wintermute ensure trades can be executed quickly, reducing slippage for buyers and sellers. Having the same firm operate on both Kalshi and Polymarket could narrow bid-ask spreads and align prices across the two venues. That matters for traders who want consistent pricing when betting on election outcomes, economic data, or other events.
How the arrangement works
Wintermute uses proprietary algorithms to quote bids and offers on both markets simultaneously. That lets it arbitrage small price discrepancies between Kalshi and Polymarket, keeping quotes in sync. The firm doesn't disclose exact volumes, but its presence on both platforms suggests a significant capital commitment.
What’s at stake for prediction markets
Prediction markets have grown rapidly, attracting retail and institutional interest. Liquid markets draw more participants, and Wintermute's involvement could boost confidence in both platforms. But the concentration of liquidity in one firm raises questions about centralization. If Wintermute scales back, spreads could widen quickly. For now, the two exchanges benefit from deeper order books and tighter pricing.
The move comes as Kalshi and Polymarket compete for users in a space still finding its regulatory footing. Wintermute is betting it can profit from the link — whether that leads to sustained higher volumes remains an open question.
