According to Techub News, iChainfo monitored that the address starting with bc1q9z transferred 1,000 bitcoins to Wintermute about an hour ago.

The address starting with bc1q9z has recently transferred three bitcoins to Wintermute, transferring about 420, 528, and 1,000 bitcoins respectively. These bitcoins were first collected from other addresses including suspected exchange addresses to the address starting with bc1q9z, and then quickly transferred to the Wintermute account, so this transfer may actually be sorted by Wintermute's internal wallet.