$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 (2015-08-06), gaining 16.24%. The number of shares that
changed hands was 12,466,600, or about 4.5 times the average daily volume
in the stock.
The closing price was $13.6, amounting to a market cap of $1,520,000,000,
about -74.93% off the highest price in the last 12 months. The stock has
been trading at a range between $11.66 and $54.24.
DDD is in the Computer Software: Prepackaged Software industry, part of the
Technology sector.