Worth noting, even with the margin call, he's still up 80% on the year: https://www.ft.com/content/a0a5e3a7-c4e6-42a6-9a7b-a780422bc...

I'm pretty sure that's time weighted return that's being quoted, and not dollar weighted. What that means is that after he was up 400%, he accepted a lot more external investment. Then he lost 67%. So many/most investors lost a lot of money. "Time weighted" tracks a single dollar invested on January 1 while "dollar weighted" describes whether he actually "created" or "destroyed" value for his clients overall.