DDD and 3D printing as a whole: hold or bail?

I was able to pick up a few shares of DDD during their May 2013 public offering at $40/share. I watched it jump up to the mid-$90s, and then fall back to it's current price ($57.27 as of 7/18 close). I held on because I'm hoping to see the technology really take off, especially in commercial uses first. Stratasys, the other big 3D firm, seems to be marketing itself towards consumer uses, but I really think the trend will start in manufacturing, which DDD seems to be targeting. My question is this: do you guys believe it foolhardy to hold out for a breakthrough, or should I hold on to see this really take off over the next 5+ years?

Here is a link to their Yahoo Finance page: http://ift.tt/143v3vW

Submitted July 21, 2014 at 09:12AM by WarrenHuffIt http://ift.tt/1kLExTJ