CoW Protocol is transitioning from single Batch Auctions to Fair Combinatorial Auction (FCA), launching June 3, 2025. The upgrade enables:
- Multiple solution submissions per auction
- Better price fairness and lower slippage
- Increased order fill rates
- Enhanced MEV resistance
- ~25% higher solver rewards
Testing begins May 20. The new mechanism allows both individual and bundled batch bids, creating more execution paths and fairer pricing for traders.
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It's official: CoW Protocol is officially moving from single Batch Auctions to a new core mechanism: the Fair Combinatorial Auction (FCA). This is one of the biggest changes in how trades are settled on-chain - and it's great news for users. Here's why 🐮✨
Calling all $COW token holders 🙋♂️ The combinatorial auction CIP is live for voting! 📥 CIP-67 proposes changing CoW Protocol’s auction mechanism from the current batch auction to a fair combinatorial auction. ✨ Vote now! 📤 snapshot.box/#/s:cow.eth/pr… 👆
SK Hynix Tokenized Equity Now Trading via CoW Protocol

**SK Hynix tokenized equity (SKHYx) is now available for trading through CoW Protocol via xStocksFi.** The semiconductor manufacturer, a major HBM supplier in the AI infrastructure space, joins the growing list of tokenized equities settling through CoW Protocol's batch auction mechanism. **Key details:** - SKHYx trades using CoW Protocol's solver competition model - Batch auctions clear trades across multiple venues - Settlement follows the same process as other assets on the protocol This marks another expansion of tokenized traditional assets into DeFi infrastructure, with CoW Protocol handling price discovery and execution.
CoW Protocol Joins Coalition to Encrypt Ethereum Mempool

CoW Protocol has joined the Encrypt the Mempool Coalition, working with industry leaders to integrate an Ethereum Improvement Proposal (EIP) into Ethereum's upcoming I* Hardfork. **Key objectives:** - Stop toxic MEV (Maximal Extractable Value) - Prevent real-time censorship - Maintain decentralization and credible neutrality The coalition aims to implement threshold encryption technology to protect transactions from front-running and censorship. This builds on CoW DAO's previous work integrating Shutter Network's encryption into MEV Blocker's private transaction routing. Developers and community members can join the coalition at [encryptedmempool.org](https://www.encryptedmempool.org/)
Reserve Protocol's AI Baskets Now Trade Through CoW Protocol
**Reserve Protocol's tokenized AI-sector baskets are now accessible through CoW Protocol**, expanding routing options for traders. - The integration adds CoW Protocol to Reserve's existing supported trading venues - Users can now access these AI-focused token baskets through CoW's MEV-protected infrastructure - CoW Protocol routes trades across multiple exchanges to find optimal prices This connection brings Reserve's AI sector exposure products to CoW's trading infrastructure, offering another venue for accessing these tokenized baskets.
CoW Protocol Launches Atomic Bundles for Multi-Step DeFi Transactions
CoW Protocol has introduced **Atomic Bundles**, a feature that simplifies complex DeFi operations by executing multiple steps as a single transaction. **Key features:** - Combines multi-step workflows into one atomic operation - Ensures all-or-nothing execution - if any step fails, the entire bundle reverts - Eliminates the risk of partial execution failures in complex DeFi strategies - Built on CoW Protocol's MEV-protected execution layer The feature addresses a common pain point in DeFi where users must execute multiple separate transactions, each carrying the risk of failure or unfavorable conditions between steps. With Atomic Bundles, users can now execute complex strategies - such as swapping, staking, and providing liquidity - in a single, guaranteed operation. This positions CoW Protocol as an execution standard for advanced DeFi workflows, offering both composability and user protection. [Learn more about Atomic Bundles](https://cow.fi/learn/intents-can-now-do-more-introducing-atomic-bundles)
SpaceX Stock Now Tradeable Onchain via CoW Protocol

**SpaceX ($SPCXx) is now accessible for onchain trading through CoW Protocol**, expanding the growing tokenization trend. - This follows SpaceX's recent availability on PancakeSwap via Ondo Finance on BNB Chain - The asset joins over 430 tokenized stocks, ETFs, and bonds already trading onchain - CoW Protocol offers MEV protection and finds optimal prices across multiple exchanges The move represents continued momentum in bringing traditional financial assets to blockchain infrastructure, making them accessible to crypto-native traders.