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

Kraton Performance Polymers, Inc (symbol: KRA) was one of the biggest
winners of the trading day today (2016-05-04), gaining 14.72%. The number
of shares that changed hands was 4,185,162, or about 11.1 times the average
daily volume in the stock.
The closing price was $25.95, amounting to a market cap of $794,930,000,
about -2.59% off the highest price in the last 12 months. The stock has
been trading at a range between $13.35 and $26.64.
KRA is in the Major Chemicals industry, part of the Basic Industries
sector. It first went public in 2009.