Anticipated sales and profits from Stratasys' 3D printers and related services in 2017 did not match Wall Street's estimations, pushing the company's stock down 9 percent on Thursday. Stratasys, which splits its headquarters between Eden Prairie and Israel, forecast sales between $645 million to $680 million this year. Analysts polled by Zacks Investment Research had hoped the company would return to its 2015 form when it reported sales of $696 million. Comparably, its sales last year weren't as good, falling 3 percent year-over-year to $672.5 million. Easily Stratasys' most drastic improvement in 2016 was in its operating expenses. During the prior year, the company was hit with a $942 million "goodwill impairment charge," leading Stratasys to claim a $1.37 billion loss, or negative $26.64 per share.