A certain whale sold ETH first and then bought ETH, losing 105 ETH worth approximately $260000

According to Foresight News, a certain whale sold 3158 ETH for 7.51 million DAI at a price of $2378 four days ago, and then repurchased 3053 ETH at a price of $2460 three hours ago today using the 7.51 million DAI. This sell buy operation resulted in a loss of 105 ETH (worth approximately $260000) for the address. The ETH at this address originated from exchanging BTC at the beginning of the year, when it exchanged 220.1 BTC for ETH.