Rokos Capital Management the London-based hedge fund that's in the process of raising another $2bn, is on a roll. The Financial Times today reports that Rokos, which employs less than 200 people in the UK according to its most recently filed report, has made profits of $1bn year to date by virtue of a successful bet that rates won't fall as fast as expected.As the money rolls in, Rokos is hiring, and it's doing so at a senior level.