Lessons learned from Lehman Brothers

  An employee poses for photographers with part of a Lehman Brothers company sign at Christie's auction house in London on September 24, 2010.
  An employee poses for photographers with part of a Lehman Brothers company sign at Christie's auction house in London on September 24, 2010.

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    Lessons learned from Lehman Brothers

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Five years after the calamitous collapse of Lehman Brothers, Richard Quest reports on what's changed and what hasn't.