According to on-chain analyst Ember's monitoring, a whale/institution that participated in Ethereum's ICO in 2015 with 50,000 ETH (ICO price $0.311) transferred the last 10,195 ETH (worth $25.6 million) from their address to a CEX in the past hour.
The 50,000 ETH from the ICO cost $15,000, and these ETH have been transferred to a CEX at an average price of $1,555 over the past 8 years, valued at $77.76 million. The overall return is 5,000 times.