The industry is exploding, so are the stocks. How high is high? The Riccaro Money Flow Quotient maintains a watch condition on the shares of DDD,SSYS and DASTY. A watch is not a sell signal. It is a signal that indicates conditions that are more than risky.
The day those ricky riccardo quotients start getting picked up by the financial news wires, as all legitimate analysis does, is the day I will start paying attention to them. Until then it is just another worthless dime a dozen spam site.