Old, but still the man deserves it, good bit of foresight by his advisers I'm sure.
Hope he cashed at $8m rather than he lower return as of 2018s movements.
I don't think he isn't holding them anymore, he proclaimed bankruptcy last time in 2017, but that's a dodgy territory. He cashed them to pay off the dept. Unleast some part of that dept could be payed off with those btc.
Article:
https://www.theguardian.com/music/2017/feb/03/50-cent-discharged-bankruptcy