Sergi Alexander/Getty Images for Haute LivingA Steve Cohen alum is having a monster year. Gabe Plotkin's Melvin Capital is up 32.1% after fees this year through September, despite posting almost no gains last month, according to a person familiar with the matter. Plotkin is known to have been one of the star money makers at Steve Cohen's SAC Capital, which has since become Point72 Asset Management after SAC shut down after pleading guilty to insider trading.