Wintermute Ventures Enters Prediction Market, Providing Bilateral Liquidity to Mainstream Platforms

May 29 — Leading market maker Wintermute is entering the prediction market space, rolling out two-way liquidity (bid-ask pricing) for event contracts on major prediction market platforms. The firm confirmed it’s currently providing both buy and sell quotes for active event contracts. Monthly trading volume across related platforms has topped $20 billion, while Polymarket and Kalshi have combined for over $150 billion in cumulative historical trading volume as of April 2026. Jake Ostrovskis, Wintermute’s head of OTC trading, noted the prediction market is displaying demand patterns on par with large asset classes, though its liquidity remains in the early stages. “Sustained two-way liquidity will help narrow bid-ask spreads, accommodate larger-scale trades, and boost the quality of probability signals reflected in market prices,” Ostrovskis said. The move follows prior entries into the space by peers including Jump Trading and Galaxy Digital, which previously launched prediction market liquidity services.