My friend @cryptoboundary just messaged me, saying the weaker movement of ETH half an hour ago might be due to a spike. The Ethereum Foundation transferred $650 million worth of ETH to a multi-signature wallet. After checking, it was found that this multi-signature wallet has a history of selling coins and transferring them to the Kraken exchange. This proves that this transfer might not just be wallet management but could be a potential sell-off plan about to be executed.