Polymarket begins sandbox testing for new Nex trading system

Polymarket has begun sandbox testing of Nex, a new trading system rewritten in Rust. Josh Stevens, vice president of engineering for Polymarket’s DeFi business, said Nex spent the past week in shadow mode replicating live orders to test latency, load stability and execution accuracy. The development team plans to conduct four more weeks of testing and, if no issues emerge, formally launch the system in mid-December.