A trader known as "Margin Call Trader 0xD83…Fd7" has remarkably transformed a $3 million USDC investment into $22.5 million within six days, according to on-chain analyst Yujin. Amid a market downturn, the trader has increased his short positions on Ethereum (ETH) and initiated new shorts on PEPE. Currently, he holds short positions across five cryptocurrencies: ETH, Bitcoin (BTC), HYPE, PEPE, and Monero (XMR), with a total position value of $332 million.