Mu Sigma Accused of Lowballing Prospects to Buy Out Investor

  • Aon founder Pat Ryan's family alleges nine-figure swindle
  • Alleged scheme hinged on downplaying thriving firm's growth

Aon Corp. founder Patrick G. Ryan claims he was cheated out of hundreds of millions of dollars when Mu Sigma Inc. downplayed its own growth prospects in a ruse to buy back his investment company’s early stake in the fast-growing IT-services firm.

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