The platform launched Polymarket USD, a wrapped stablecoin backed one-to-one by USDC, alongside a rebuilt trading engine and upgraded smart contracts that cut gas costs for its 300,000-plus active traders.
Polymarket has replaced bridged USDC with its own collateral token, Polymarket USD, in what the prediction market described as the biggest change in its history.
The new token launched on 6 April as part of a sweeping platform overhaul that also includes a rebuilt trading engine, upgraded smart contracts and support for EIP-1271 smart contract wallets. Polymarket USD is backed one-to-one by Circle's USDC but issued directly by Polymarket, removing the platform's dependence on Polygon's bridged USDC.e — a wrapper that carried its own set of bridge-related risks and settlement inefficiencies.
The distinction between holding USDC.e and holding a Polymarket-issued token backed by USDC might seem academic, but it isn't. Bridged tokens inherit the security assumptions of whatever bridge moves them between chains. When Polymarket relied on USDC.e, every dollar on the platform was implicitly exposed to Polygon's bridge infrastructure — the same category of risk that produced the $625 million Ronin bridge hack and the $326 million Wormhole exploit. By wrapping USDC directly, Polymarket takes custody of the underlying asset and eliminates one link in the chain of trust.
Users will need to convert existing USDC or USDC.e holdings into Polymarket USD through a smart contract function on the platform. The migration is rolling out over two to three weeks, with Polymarket promising traders at least a few days' notice before the transition requires cancelling all open orders. Standard users should see minimal disruption; API traders and bot operators — who account for a significant share of the platform's volume — will need to update their software development kits to accommodate the new order book structure.
The trading engine rebuild is the less visible but arguably more important half of the upgrade. Polymarket's previous matching system, while functional, struggled with latency during high-volume events — US election night in November 2024 being the most notorious example. The new engine promises faster execution and lower gas costs, though the company hasn't published specific benchmarks. The addition of EIP-1271 support means smart contract wallets can now interact with the platform natively, opening the door to institutional participants who operate through multisig structures rather than individual wallets.
Polymarket's growth trajectory makes the overhaul overdue. The platform has become the dominant venue for prediction markets globally, with more than 300,000 active traders and monthly volumes that dwarf competitors like Kalshi and Augur. That scale — built on infrastructure originally designed for a fraction of the current load — was showing its age. The upgrade is less an innovation than a necessary piece of engineering debt repayment.
The stablecoin launch also positions Polymarket closer to the trend of platforms internalising their financial infrastructure. Circle's own ambitions extend well beyond issuing USDC; the company filed for an IPO and has been building out payment networks and cross-chain settlement tools. Polymarket, by issuing its own wrapped version of USDC, retains tighter control over settlement flows and user balances without taking on the regulatory burden of being an actual stablecoin issuer.
A native POLY governance token remains on the horizon — Polymarket has confirmed plans but set no timeline. The platform's own prediction markets put the odds of an announcement before May 2026 at just 11 per cent, which is either a sign of the team's caution or the market's scepticism. Either way, the stablecoin and infrastructure upgrades had to come first; you don't launch a token on top of a trading engine you're about to rip out.
The full migration is expected to complete by late April. Polymarket processed $1.2 billion in trading volume in March 2026, and the upgraded infrastructure is designed to handle multiples of that figure without the bottlenecks that plagued previous high-traffic events.
