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

Press Ganey Holdings, Inc. (symbol: PGND) was one of the biggest winners of
the trading day today (2016-05-04), gaining 10.75%. The number of shares
that changed hands was 664,309, or about 4.3 times the average daily volume
in the stock.
The closing price was $33.99, amounting to a market cap of $1,790,000,000,
about -5.97% off the highest price in the last 12 months. The stock has
been trading at a range between $23.68 and $36.15.
PGND is in the Professional Services industry, part of the Consumer
Services sector. It first went public in 2015.