ETH OG from 2016, dormant for 1 year, deposits 15,000 ETH to Coinbase, achieving a 17680% return

According to on-chain analyst Ai Yi, an ETH OG from 2016 (0xa2F...F85A), dormant for one year, has deposited 15,000 ETH (worth $30.97 million) to Coinbase. This address has been accumulating ETH since 2016 with a cost basis of $11.61. If sold now, the profit would be $30.79 million, representing a return of 17680%.