 Lehman Brothers Kuhn Loeb, which itself was the merger of Lehman Brothers and Kuhn Loeb in 1977 was led by Pete Peterson, a former United States Secretary of Commerce and future founder of the Blackstone Group.However, by the early 1980s hostilities between the firm's investment bankers and traders, who were driving most of the firm's profits, prompted Peterson to promote Lewis Glucksman, the firm's President, COO and former trader, to be his co-CEO in May 1983.Glucksman introduced a number of changes that had the effect of increasing tensions.