Overview
- A maker rebates program pays liquidity providers daily in USDC funded entirely by taker fees from the short-duration crypto markets.
- Fees vary with odds and peak near 50% probability, with an example showing about $1.56 on a 100-share taker trade at $0.50, slightly over 3%.
- The change is confined to 15-minute crypto contracts, while longer-term crypto, political, and non-crypto markets remain fee-free.
- Polymarket introduced the update through documentation changes without a formal announcement.
- Coverage and on-chain analysis indicate the design aims to curb latency-arbitrage and bot-driven taker activity, and API users are instructed to update clients.