Following the rise in ETH prices, whales holding 398,891 ETH ($1.14 billion) have sold 29,897 ETH for 84.87 million USDC at $2,839. The purchase cost was only about $3.50, but it achieved a profit of $84.70 million and a return of 810 times. Whales still hold 368,992 ETH (1.07 billion USD).