Once the world’s biggest hedge fund manager, Goldman Sachs Asset Management has taken a beating over the past seven years. The New York–based firm has delivered uneven performance over the past several years, which has triggered heavy investor redemptions. Its Global Alpha fund, a quantitative strategy that managed $12 billion at its peak, posted brutal losses in 2007 and hit another rough patch in 2011. GSAM shuttered the quant fund in September of that year following the closure of another quantitative equity fund, Global Equity Opportunities, in February 2010. Additionally, clients and employees became frustrated with…