### Comment:
Berkshire owns 100% of companies. Check the Wikipedia page, they got their fingers in everything

### REPLY:
They do own some whole companies but for some big companies they do like to keep shares under a certain percentage so its easier to manage. 
  
 https://www.omaha.com/money/warren-buffett-says-relax-he-s-just-buying-and-selling/article_2caf0c38-1f09-576a-b4d5-75843c8cc1e3.html

### END.