Lehman Brothers | 35,967 followers on LinkedIn. Lehman Brothers Holdings Inc. (Pink Sheets: LEHMQ, former NYSE ticker symbol LEH) (pronounced /ˈliːmən/) was a global financial-services firm which, until declaring bankruptcy in 2008, participated in business in investment banking, equity and fixed-income sales, research and trading, investment management, private equity, and private banking. It was a primary dealer in the U.S.