Bloomberg Billionaires Index estimates that SBF has lost 100% of his net worth, all of which was in one way or another tied into Alameda/FTX-related firms (there was some invested in Robinhood, but it was used as collateral for Alameda-related loans.)

https://www.thestreet.com/investing/cryptocurrency/crypto-bi... (this covers the details, but isn’t paywalled.)