What have the top US fund managers been doing recently?
Each quarter the analyst community eagerly awaits the publication of the 13F forms by the leading US investment managers.The releases, which have to be published within 45 days of the end of the quarter, are parsed for clues into what these ?star? managers are thinking about the world and about the markets.Unsurprisingly, the quarterly filings by Berkshire Hathaway (BRK.B:NYSE), led by legendary i