Louisville-based Humana Inc.'s share price has risen from about $66 per share in December 2012 to above $145 per share today. "We have had a wonderful run over the last few years" in terms of the company's market valuation, Humana president and CEO Bruce Broussard said this morning at a Greater Louisville Inc. breakfast event. This sort of thing is happening all over the insurance business. Share prices for UnitedHealth Group Inc. and Aetna Inc. have nearly doubled in the same period, for instance. Broussard said the company's rising share price is one of the top things he is asked about.