3d Systems (DDD -23.14%) stock sank in Wednesday's trading. The company's share price closed out the daily session down 23.1%, according to data from S&P Global Market Intelligence. 3d Systems published its fourth-quarter results after the market closed yesterday, and the company posted sales and earnings results for the period that fell short of the market's expectations. In addition to underwhelming Q4 performance, the 3D printing specialist also issued forward guidance that fell short of Wall Street's ex ...