Based on the data, from Arkham monitoring it appears that the FTX attacker has recently mixed around $7.3 million worth of bitcoins. This accounts for 60% of the stolen assets, which given todays prices adds up to over $600 million.
Initially in November 2022 the FTX attacker transferred 4,540 BTC using the Ren Protocol. At that time these bitcoins were valued at $75 million. However over the year the price of BTC has nearly tripled. As a result this amount is now worth than $185 million.
Furthermore in October 2023 the attacker exchanged ETH valued at $142 million for BTC through Thorchain. Immediately deposited it into a mixer. If these funds were exchanged at market rates and held as BTC their value would surpass $220 million. Altogether the FTX attacker has mixed, than $400 million worth of BTC.