Never let a crisis go to waste. Its a mantra of the Obama administration, but few have taken it to heart like Bob Diamond, an erstwhile supporter of John McCain.
A former bond trader, Diamond, 58, turned Barclays Capital, the banks securities arm, into a global debt powerhouse in a decade, but that was just a prelude to his biggest move: buying the U.S. subsidiary of the bankrupt Lehman Brothers in September 2008, and gaining a franchise in equities and M&A (see Barclays Capital's Bob Diamond: Wall Streets Would-be King).
Now ensconced in Lehmans old Times Square headquarters, Diamond is determined to make Barclays a top-three firm across the board. Given his track record, no one on Wall Street dares dismiss his ambitions.