The record for one of the largest amount of BTC transferred from one wallet to another occurred on 27 Jan 2011 11:23:56, when 400,000 BTC was moved.
Looks like it's either a 150,000BTC or 250,000BTC transfer since one of those outputs should be the "
change".
Since you're talking about a "
wallet", the change address should belong to the same wallet where the address in the input belongs to.
Thus, the sent amount in the transaction is only one of those outputs.
If you want to emphasize the 400,000BTC value, the article/topic should be about "
the largest UTXO amount spent".