Calamos Investments patriarch gives up CEO title
John Calamos Sr. will relinquish the CEO title next month after struggling for two years to reverse a decline in the company's business and stock price.
Buying binge signals new dawn for Morningstar?
With five acquisitions in four months -- and 15 since 2007 -- the industry giant is dramatically expanding its offerings. Company CEO Joe Mansueto calls it 'filling in the mosaic'