Published : November 8 2012 at 15:51 ET

3-D prototyping and printing system manufacturer DDD is having a pocket pivot in today's trade. It had a strong earnings report recently causing it to gap up. Earnings in the latest quarter soared 129% and sales 57% compared to the same quarter a year ago. Industry group rank 5. DDD and related stock SSYS both have fairly erratic patterns so caution is warranted, especially in this downtrending market. You might want to just keep this one on your watch list instead of intiating any positions.

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