Depends on the coins. If he was holding the worthless FTX tokens, he's been totally swindled. This would need to be litigated as fraud (eg, FTX swindled your

Depends on the coins. If he was holding the worthless FTX tokens, he's been totally swindled. This would need to be litigated as fraud (eg, FTX swindled your son out of money for worthless tokens due to their manipulation) rather than a claim on unreturned cash/other types of coins. I suppose if the trade executed and they credited his account with the proceeds and he just wasn't able to withdrawal, he might get something from a claim.