James Wynn, a prominent rolling trader, has shorted 0.85 BTC using his $1,430 rebate income, employing 40x leverage. This move comes after Bitcoin's 6% decline, with the short position opened at $67,466 and a liquidation price set at $68,232. Wynn, who previously lost $100 million on Hyperliquid, has been engaging in smaller trades funded by rebate income, though these have consistently resulted in liquidation.