Amber Group and Ethena are suspected of depositing 3,956 ETH, valued at approximately $13.24 million, into major cryptocurrency exchanges Coinbase and Binance. This transaction was reported by The Data Nerd and occurred seven hours prior to the report. Meanwhile, Arrington Capital has withdrawn 5,500 ETH, worth about $18.51 million, from Coinbase. These significant movements highlight ongoing activity among major crypto players in the market.