Machi Big Brother turned $152,000 into $12.72 million in three days through leveraged trades on Hyperliquid, drawing attention to the risks concentrated on the exchange. Hyperliquid recorded $12.19 billion in perpetual-futures volume over 24 hours on August 22, nearly 30% of the $40.79 billion traded across decentralized perpetual exchanges that day. HypurrScan data showed Machi’s portfolio held about $12.9 million, mostly in USDC, against roughly $103 million in open long positions: $52.4 million in Bitcoin, $44.9 million in Ether and $6.1 million in Hyperliquid Hype Tokens. The account was entirely net long, with a 14.41% margin ratio. Ether’s nearly 30% seven-day gain helped drive the profits, although leverage can amplify losses just as quickly. Lookonchain said Machi has faced nearly 500 liquidations, including seven in 10 hours in June, while Arkham data showed cumulative losses of $80.43 million since September 2025. The trader has sold Bored Ape Yacht Club NFTs to fund positions, but Lookonchain said the latest reversal meant he no longer needed to sell them to maintain his longs. Hyperliquid’s liquidation rules can begin closing positions when equity falls below maintenance margin, with market orders and 20% liquidation increments for positions above 100,000 USDC.