A market that is nearly certain often trades a bit under $1 (say $0.97) because it won't officially settle for months, and crypto traders dislike tying up cash that long. This strategy buys those near-sure things and treats the gap to $1 as interest earned over the wait, always rotating capital into whichever near-certain market offers the best annualized return. The edge is that the platform's settlement waits as resolved by its oracle (UMA) are underpriced as a cost-of-carry.
Markets on Polymarket where settlement-timing funding arbitrage is the natural play: