In early July, like they've done so often before, investors focused on Warren Buffett, Berkshire Hathaway (BRK.B) and their latest 13F filing. A 13F is a quarterly disclosure of equity holdings by institutional investors with more than $100 million under management.
Most headlines focused on Buffett's new position in the troubled health care giant UnitedHealth Group (UNH), which was dealing with the assassination of a business unit CEO and a Department of Justice probe.
