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

Hortonworks, Inc. (symbol: HDP) was one of the biggest winners of the
trading day today (2015-12-02), gaining 12.91%. The number of shares that
changed hands was 1,410,806, or about 2.5 times the average daily volume in
the stock.
The closing price was $19.24, amounting to a market cap of $795,900,000,
about -35.5% off the highest price in the last 12 months. The stock has
been trading at a range between $15.75 and $29.83.
HDP is in the Computer Software: Prepackaged Software industry, part of the
Technology sector. It first went public in 2014.