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Kyu
@kyu
I find CoW Swap's "Order Surplus" concept pretty misleading—maybe even deceptive. When calculating "surplus," CoW Swap compares the final trade execution against the limit price—which is just the minimum amount you're willing to accept (quoted amount * (1 - slippage tolerance)). Example: you're quoted 10,000 USDC for selling 1 token A, with a 0.5% slippage tolerance. Your minimum buy amount becomes 9,950 USDC. If the trade executes at 9,975 USDC, CoW Swap claims you got a 25 USDC "surplus". But in reality, you received 25 USDC less than what you were quoted. That's not a win—it's just better than the worst-case fallback. Calling that a "surplus" feels like spin.
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grunt.eth
@grunt.eth
yeah, last big trade i made I had this exact issue. i did set the slippage low, but i was surprised when the quoted price -> the minimum received on the page bad UI mostly? creates the bad UX
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Kyu
@kyu
Yeah, also users who don’t know think they are getting a “surplus” when a lot of times they may be getting less than the displayed number that they saw on UI. 😅
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grunt.eth
@grunt.eth
literally me oh nice quote, i will accept it oh no, it dropped by the entire slippage amount, did I just get MEV rugged on the MEV-protected swap? oh, i got a bonus of the amount I thought i lost for 2 min until the trade completed...
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