If you wish to hold some coin then use exchange only for during exchange. Just exchange your coin and transfer on your personal wallet that you have controlled. Specially you can use hardware wallet.
Because many exchange hacked buy hacker. Many people loss their capital by hack.
So please don't hold your coin on exchange for long time.
I second you because when you transfer your coins to the personal wallet you basically minimize the risk of being hacked, because in the exchanges there are a lot of Users, Transactions that shows high risk of being attacked by Cyber criminals.