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I Wrote About 3D Stocks Last Year Which Are Now Up 200%

|Includes: 3D Systems Corp. (DDD), SSYS

3D printers are machines that can 'print' anything from toys to machine parts to automobiles to houses! If you saw my 3D Printing article last month, you would see that the two main players in the industry are 3D Systems Corporation (NYSE:DDD) and Stratasys (NASDAQ:SSYS).

At the time the article was written on December 13, 2012, 3D closed at 46.08, it is now trading at 61.27, an increase of 33%. Stratasys traded at 70.46 back then, now it is at 83.69, a rise of over 18%. And one 3D stock that I didn't write about, and is a much smaller company, is Organovo Holdings (NASDAQ:ONVO), which closed at 2.16 on December 13 and is now at 3.84, an incredible increase of 77%.

Of course, this wasn't the first time I wrote about 3D printing. I have featured several articles throughout the year. One of the first articles I wrote about was on January 8, 2012. At that time DDD which closed at 15.81 the next business day, posted an incredible increase of 287% since then, and SSYS was at 35.15, and has risen 146%. This is an average percentage increase of 216%.

Is the run on these stocks over? Even though they may be good for the long term, I would say that they are certainly due for a pullback. Now it is time to look for the next hot industry.

Disclosure: I have no positions in any stocks mentioned, and no plans to initiate any positions within the next 72 hours.