The 3D printing stocks showed strength Monday morning, rallying hard at the market open. The rally could be linked to a bullish Seeking Alpha article from the weekend being passed around currently. This news gave Stratasys a rally strong enough to break the key $100 level, further extending its rally. 3D Systems (NASDAQ:

) was up 2.56 percent to $47.33 while Stratasys (NASDAQ:

) was up 7.10 percent to $106.28. Read the article