Organovo Holdings, Inc. (ONVO)

[Rkmatters]

Not all 3D, but this one, yes. The valuations on most of the 3D stocks is too high, and it will take a good year+ before they come back in line, especially considering all the industry M&A. Also, HPQ getting into the space, well that changes thing. That said, this is my only 3D holding, but I have bought others and sold closer to thier highs.