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

Proofpoint, Inc. (symbol: PFPT) was one of the biggest winners of the
trading day today (2015-10-22), gaining 12.27%. The number of shares that
changed hands was 2,055,046, or about 3.7 times the average daily volume in
the stock.
The closing price was $62.21, amounting to a market cap of $2,490,000,000,
about -14.43% off the highest price in the last 12 months. The stock has
been trading at a range between $36.86 and $72.7.
PFPT is in the EDP Services industry, part of the Technology sector. It
first went public in 2012.