Polymarket, the largest decentralized prediction market, officially announced the launch of its own stablecoin — Polymarket USD. The new token will replace USDC.e as the primary collateral asset on the platform, backed 1:1 by USDC. The move aims to improve trading efficiency and give Polymarket more control over its liquidity.
Migration Timeline: 2-3 Weeks, Auto for Users, Manual for API
According to the Polymarket dev team on X, the migration will take place over the next two to three weeks, along with upgrades to smart contracts, order books, and the trading engine. For most users, the frontend will handle the conversion automatically after a one-time approval. However, API traders and power users must manually wrap USDC or USDC.e into Polymarket USD using the platform's collateral onramp contract.
The update also improves order matching, simplifies order types, and enhances fee distribution. A new CLOB client SDK will help developers migrate bots, but existing order books will be cleared entirely, and the platform will enter a short maintenance window. Polymarket promised to announce the exact timing at least one week in advance.
Rapid Growth: $22 Billion Volume in 11 Months
The upgrade comes as Polymarket continues its rapid expansion, recording over $22 billion in trading volume in the first 11 months of 2025. The growing scale likely pushed the team to seek more control over its collateral layer.
Community Split: Circle's Biggest Threat or Just Another Failed Stablecoin?
The announcement sparked intense debate on X. One user called it "the biggest threat to Circle," noting that Polymarket is currently paying around 3.5% to 4% on deposits to Circle. A proprietary stablecoin would allow Polymarket to capture that yield, lock in user engagement, and reduce external dependency.
But skeptics quickly countered. Another user pointed out that numerous institutions have tried launching their own stablecoins and failed to gain traction. Trust remains the deciding factor, they argued. Polymarket's brand alone may not be enough to convince users to hold a token that hasn't been battle-tested like USDC.
Developer Impact: Re-sign Orders, Clear Books
All bots and integrations must upgrade to the latest SDK and re-sign orders using the new structure. TypeScript, Python, and Go clients are supported, with documentation released before the launch. Order books will be cleared, meaning pending orders will be invalidated. Strategy traders need to redeploy after migration.
If the rollout proceeds smoothly, the new stablecoin could streamline trading and boost platform performance. Polymarket said it will monitor the transition closely to ensure a stable shift.