And at least in SBF/Alameda's case, they did, and you can google it. IIUC it was basic arbitrage, the hard part was figuring out how to interface with Japan's b

And at least in SBF/Alameda's case, they did, and you can google it. IIUC it was basic arbitrage, the hard part was figuring out how to interface with Japan's banks. Maybe the guy is a bad dude, I don't have a horse in that race. But lots of trading strategies that have worked in the past are well known.