Is Linux a company?

As we mentioned in the previous answer, there is no company called "Linux", so there can't be any stock in a non-existent company. However, several companies are publicly traded who do provide Linux products and services. Here are a few that directly produce the Linux operating system.

         o Novell (Symbol: NOVL)
         o Red Hat (Symbol: RHAT) 
     Companies like IBM and Hewlett-Packard have also put tremendous support behind Linux and they are publicly traded.