Aetna to buy Humana for $37 bln in cash and stock By: Reuters: Company News July 03, 2015 at 02:33 AM EDT July 3 (Reuters) - Health insurer Aetna Inc said it will buy Humana Inc for about $37 billion, or about $230 per share, in a cash-and-stock deal. Read More >> Related Stocks: Aetna Humana