LIVEFull-depth Polymarket Up or Down order books for Bitcoin, Ethereum, Solana, XRP, BNB and Dogecoin, with the Chainlink price each market settles on.
A near-certain Polymarket share is guaranteed to redeem for $1 once the market settles, but settlement and moving cash off Polygon takes time. Some holders sell those shares below $1 just to get their money out instantly. This strategy buys from those impatient sellers and waits for the guaranteed $1 redemption. The edge is that people pay a premium for instant liquidity, and the cost of bridging funds off-chain is asymmetric.
Markets on Polymarket where usdc bridge / redemption spread arbitrage is the natural play: