Hyperliquid Whale Takes $277 Million Position with 550 BTC Long and 120,000 ETH Longs

The available sources demonstrate some indicative activity connecting Matrixport with large BTC movements and leveraged long positions, particularly noting a deposit of 750 BTC and a trader referred to as 'Maji' rolling longs through Binance. These data points suggest plausibility that a Matrixport-associated trader engaged in significant leveraged activity. However, none of the sources explicitly confirm the existence of a long position equivalent to 400 BTC with 20x leverage. The most authoritative and relevant reports provide circumstantial evidence but lack direct verification of the position specifics, such as notional size and leverage ratio. Other sources either reiterate general institutional behavior or reference similar events without concrete transaction details. As such, the claim appears possible but not substantiated with primary documentation, warranting an 'insufficient_evidence' assessment with medium confidence.