Polymarket is planning to launch a rebuilt trading engine in November as part of efforts to resolve ongoing platform stability issues, according to Josh Stevens, the platform's VP of Engineering.
The new system, a Rust-based Central Limit Order Book (CLOB), is designed to replace the existing infrastructure that has experienced multiple outages in recent months. Stevens indicated that the end-to-end order book system will be completed by October, with testing and market maker access validation scheduled for November before the migration begins.
Current System Challenges
Polymarket's existing CLOB has been the source of recurring technical problems. In early September, a prediction trading API issue took 9 hours to resolve. The perpetuals trading system, launched earlier this month, has also faced operational disruptions in August and September. Stevens attributed these issues to the limitations of the current infrastructure, which he described as difficult to scale and improve.
The platform completed a V2 engine upgrade in April that increased order execution capacity from over 1,000 to more than 10,000 orders per second and reduced transaction costs. Despite these improvements, stability challenges persisted.
Trading Volume Context
Polymarket's U.S. weekly trading volumes reached nearly $800 million in September. The broader prediction market sector recorded $63 billion in volume that month. Polymarket Perpetuals daily volume has remained below $150 million since launch.
