A certain whale address accumulated 398,889 ETH (worth $2.4 million at the time) between January 18 and March 10, 2016, with an average price of only $6.
After being dormant for more than 8 years, the whale address was reactivated on November 7 and began selling, having sold 73,356 ETH (approximately $224 million) so far, with 325,533 ETH remaining (approximately $1.1 billion).