UnitedHealth CEO David Wichmann is loading up on the stock

On the heels of one big insider purchase of UnitedHealth Group stock comes another. This time, the top executive of the diversified health-care company bought a record number of shares. CEO David Wichmann paid $4.6 million on May 3 for 20,000 UnitedHealth shares, an average per-share price of $231.79, for his personal account, which now holds 904,367 shares.