$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 (2016-01-04), gaining 13.12%. The number of shares that
changed hands was 7,610,142, or about 2.4 times the average daily volume in
the stock.
The closing price was $9.83, amounting to a market cap of $1,100,000,000,
about -71.06% off the highest price in the last 12 months. The stock has
been trading at a range between $8.44 and $33.97.
DDD is in the Computer Software: Prepackaged Software industry, part of the
Technology sector.