The Motley Fool explains why 3D Systems’ stock dropped nearly 10% on Monday. 3D Systems (NYSE: DDD), a diversified 3D printing firm, saw its stock decline 9.7% on Monday, owing to regular volatility and possibly some news from Desktop Metal. On Monday, 3D Systems just revealed the date for the announcement of its second-quarter 2021 results: Monday, Aug. 9, after the market closes. A large part of the loss in 3D Systems shares on Monday was most likely attributable to the firm’s normal volatility./nRead More