Small-caps have been on tear ever since the second day of Federal Reserve ChairJerome Powell’sCongressional testimony when he chose to adopt a dovish tone, and a market strategist said on Monday that the rally in the space is only getting started. What Happened: The rally seen in the current leg-up will likely be larger than the upside seen in the October-December period, said Fundstrat’s Head of Research Tom Lee in an interview with CNBC. During the eight-week period late last year, the Russell 2,000 Index, a small caps-focused index, rose nearly 30%, he noted. This time around, institutions …