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

Packaging Corporation of Americ (symbol: PKG) was one of the biggest
winners of the trading day today (2015-07-22), gaining 8.26%. The number of
shares that changed hands was 4,127,361, or about 3.3 times the average
daily volume in the stock.
The closing price was $70.89, amounting to a market cap of $6,890,000,000,
about -16.48% off the highest price in the last 12 months. The stock has
been trading at a range between $57.06 and $84.88.
PKG is in the Containers/Packaging industry, part of the Consumer Durables
sector. It first went public in 2000.
Looking at its valuation, the stock is now trading at 17.77 times earnings.