Polymarket is rebuilding its exchange stack to improve execution, liquidity, and scalability across its prediction markets platform. The upgrade introduces a new order book system and a native collateral token. This stack overhaul reflects a broader shift toward exchange-grade infrastructure as regulatory clarity improves.
Polymarket is deploying a redesigned stack centered on its upgraded central limit order book. The new system simplifies order structures and improves matching efficiency across markets. The stack aims to deliver faster execution and tighter spreads.

The updated stack also supports advanced signature standards and onchain attribution tools for builders. These changes allow developers to track order flow and integrate trading strategies more efficiently. Moreover, the stack introduces optimized fee collection and distribution mechanisms.
During migration, the platform will reset all existing order books to align with the new stack. A short maintenance window will support this transition and ensure system stability. Therefore, the stack upgrade prioritizes performance while maintaining operational continuity.
The upgraded stack includes a transition from USDC.e to a new collateral token called Polymarket USD. This token remains backed one-to-one by USDC and supports standardized settlement across markets. As a result, the stack improves liquidity consistency and simplifies collateral management.
For most users, the platform handles the transition automatically within the interface. Advanced users must wrap assets into the new token using a dedicated contract function. Hence, the stack introduces a structured onramp for manual conversions.
This collateral shift reflects a growing trend among exchanges adopting native settlement assets within their stack. It supports efficient trade execution while reducing fragmentation across liquidity pools. Consequently, the stack aligns with modern exchange design principles.
The stack upgrade arrives as prediction markets gain clearer legal footing in the United States. Recent court decisions have reinforced federal oversight of event-based contracts. Therefore, the stack evolves alongside a more defined regulatory environment.
Polymarket positions its stack to meet institutional standards as compliance expectations increase. The rebuilt infrastructure supports scalable trading activity and improved system resilience. The stack prepares the platform for broader participation within regulated frameworks.
Developers must update their SDKs and re-sign orders to align with the new stack structure. The platform will release migration guides and updated documentation before deployment. The stack transition ensures readiness across integrations and trading systems.
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