$DDD is one of biggest winner #stocks today. read more:

3D Systems Corporation (symbol: DDD) was one of the biggest winners of the
trading day today (2016-02-03), gaining 13.42%. The number of shares that
changed hands was 4,221,596, or about 1.3 times the average daily volume in
the stock.
The closing price was $8.45, amounting to a market cap of $947,050,000,
about -74.53% off the highest price in the last 12 months. The stock has
been trading at a range between $6.0 and $33.17.
DDD is in the Computer Software: Prepackaged Software industry, part of the
Technology sector.