You can buy 3D printers anywhere now, so why should DDD merit such a rich P/E?
As usual with Wall St. you never know what they are up to... hype to the moon and then dump into the bin. Look at APPL, for god sake, it is trading at ~ 1 P/E! And don't forget t the hype of the moment is: NFLX
Just ride the wave with the big crooks - Happy trading