arbitrager

from WordNet (r) 3.0 (2006)

arbitrager
    n 1: someone who engages in arbitrage (who purchases securities
         in one market for immediate resale in another in the hope
         of profiting from the price differential) [syn:
         {arbitrageur}, {arbitrager}, {arb}]

from The Collaborative International Dictionary of English v.0.48

arbitrager \arbitrager\ n.
   same as {arbitrageur}.

   Syn: arb, arbitrageur
        [PJC]