After a bruising year for the stock, one concentrated fund stepped in anyway.Chicago-based Wishbone Management initiated a new position in EPAM Systems (EPAM 0.69%), buying 100,000 shares valued at 15.08million,accordingtoaNovember13SECfiling.WhatHappenedAccordingtoafilingwiththeU.S.SecuritiesandExchangeCommissiondatedNovember13,WishboneManagementdisclosedanewstakeinEPAMSystems(EPAM0.6915.08 million ...