Bullish Two Hundred Day Moving Average Cross - DDD By: Market News Video March 15, 2018 at 11:03 AM EDT In trading on Thursday, shares of 3D Systems Corp. (DDD) crossed above their 200 day moving average of $12.96, changing hands as high as $13.70 per share.. Read More >> Related Stocks: 3D Systems Corp S&P Tech Hardware Et SPDR