Goldman managing director reportedly exits after making money on dogecoin

A managing director at Goldman Sachs (GS -1.3%) has left the bank after reportedly making a substantial amount of money from dogecoin (DOGE-US), the internet meme cryptocurrency, according to various media reports.
A Goldman spokesman confirmed to MarketWatch that Aziz McMahon, head of emerging market sales based in London, had left the company, but had no information on the dogecoin investment.
The Guardian said it is believed that the banker made the money from his personal account and wasn't involved in trading crypto for his employer.
Another publication efinancialcareers said he may be starting a hedge fund.
The crypto has been on bit or a rollercoaster ride in the past week. Now, it's trading at ~45 cents, but had reached the low 70s on May 8.
Dogecoin jumped late last week ahead of doge-promoter Elon Musk's appearance on Saturday Night Live, only to slump immediately afterwards.