Well, a very famous shortseller, Marc Cohodes, has been railing on about Bankman Fried for quite some time now, convinced he was fraud. One thing though is tha

Well, a very famous shortseller, Marc Cohodes, has been railing on about Bankman Fried for quite some time now, convinced he was fraud. One thing though is that Cohodes never alleged the customer funds were being misused like that, but his line of questioning IIRC was basically the following: 1. SBF had no rep(i.e Cohodes could not find anybody from TradFi who could vouch for this guy being smart, viewed JaneStreet stint as very questionable per his research, etc). 2.Garry Wang is basically a ghost with very little info despite being CTO. 3. Dan Friedberg, who was basically in charge of regulation at FTX IIRC, was one of the lawyers involved in the Ultimate Bet poker scandal. 4. SBF was super late to the crypto game and their whole "geographical arbitrage" trade that propelled Alameda to fame was never fully explained. In Marc's opinion every single person who has ever put on a massive trade and won can describe the trade with granular detail, SBF never went into specifics of his. If you try googling around SBF and Marc Cohodes you should probably be able to find more detailed arguments. Cohodes is the only one I know who was super public about calling him a fraud before the balance sheet leaks.