According to blockchain tracker Whale Alert, an unknown wallet transferred 11,499 Bitcoin (worth approximately $912.1 million) to another unidentified wallet at 9:53 AM UTC on August 28, ahead of Kevin Warsh's speech on August 28 EDT. There is currently no evidence that this transfer represents a sale, but large transfers often attract attention around significant Federal Reserve events, as traders may be rebalancing positions in anticipation of volatility.