First Union-Lehman Brothers-Bank of America Series Reports FLB. The BNP Paribas. Lehman Brothers Collapse Causes Impact And to the world because foreign banks and hedge funds had substantial holdings of mortgage-backed securities and collateralized debt obligation. Mortgage backed securities lehman brothers . Richard Severin Fuld Jr. ˈ l iː m ən was a global financial services firm founded in 1847. During the mid-2000s the housing boom was in full force and Lehman like many other firms were becoming more and more heavily involved in issuing mortgage-backed securities. The housing boom of the early to mid-2000s saw Lehman and other Wall Street firms become heavily involved in collateral debt obligations CDOs and mortgage-backed securities MBSs. A fixed-income index that focuses on asset-backed securities. She joined Close Brothers Asset Management in April 2014 as a global equity analyst covering the consumer sector in the Research Team. Roohis career has spanned o...