Why Shares of 3D Systems Are Plummeting This Week

After sliding by 11% last week, shares of 3D Systems (DDD 5.07%) have extended their decline this week after the company reported disappointing fourth-quarter results on Tuesday.According to data provided by S&P Global Market Intelligence, as of the market's close on Thursday, 3D Systems was down by 16.5% from the end of trading last week."Significant headwinds" plagued the company last quarter3D Systems reported fourth-quarter revenue of $114.8 million, well shy of analysts' expectations for$126.6 million ...