Ask Slashdot:Linux and Stocks

Tim Macinta wrote in with a very simple question, that I never thought about before. He asks " are there any Linux centric companies which are publicly traded? I've spent several hours looking for one but the closest thing I've found is Netscape. If there are any, I'd like to help them out by buying a little of their stock. Of course this would probably help me out too because I think that this would be a good time to invest in such a company."