Ex-Goldman analyst’s hedge fund reaps 300% on small Japan banks(March 25): Katsunori Tanaka spent most of his 19 years at Goldman Sachs Group Inc scrutinising Japan’s biggest banks as an equity analyst. Now, he’s making money obsessing over much smaller lenders at his 48 billion yen (US$320 million, or RM1.42 billion) hedge fund Ariake Capital.