A prominent whale, known as the "ultimate short seller," has generated a $71 million profit from Bitcoin short positions, achieving a 14x return on capital. The whale, identified by the address 0x5d2, has engaged in four BTC short trades since January last year. While the first three trades resulted in a combined loss of $5.48 million, the latest position has been highly profitable, earning $10.05 million in funding rate and over $61 million in contract profits. The whale has strategically reduced its position, withdrawing approximately $5 million from Hyperliquid, and has not rebalanced its portfolio since December 26. From a peak position of $136 million last October, the whale has decreased its exposure by about $130 million. Currently, it maintains a BTC short position with 20x leverage, valued at $4.4 million, with a floating profit of $3.2 million, reflecting a 1470% gain.