$PGEM is one of biggest losers #stocks today. read more:

Ply Gem Holdings, Inc. Common S (symbol: PGEM) was one of the worst losers
of the trading day today (2016-08-17), losing -7.28%. The number of shares
that changed hands was 262,282, or about 1 times the average daily volume
in the stock.
The closing price was $13.5, amounting to a market cap of $920,500,000,
about -16.1% off the highest price in the last 12 months. The stock has
been trading at a range between $8.58 and $16.09.
PGEM is in the Forest Products industry, part of the Basic Industries
sector. It first went public in 2013.
Looking at its valuation, the stock is now trading at 14.24 times earnings.