On 7th of May hacker withdrawal 7000 Bitcoins from binance open wallet , binance cannot stop the transaction when was being done . Hackers acted very smart as didn't hacked on the strong point of time, they attacked at the time when the security was Least and after hacker withdraw the amount all the withdrawals were blocked by binance first binance didn't speak out on it afterward on 8th of May main the revealed that hackers had withdrawn 7000 Bitcoin and it might take up to one week how to make the security patch and release withdrawal BTC .
Binance also said that the fund would be refunded to the account but #SAFU .
As said by binance, 2% of the total fund have been hacked and withdrawn . According to this stats the must be having around 350,000 BTC but according to my research they are holding o around 110,000 BTC rest also might be there in small accounts which I have to study further.