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

Apogee Enterprises, Inc. (symbol: APOG) was one of the worst losers of the
trading day today (2016-09-15), losing -6.14%. The number of shares that
changed hands was 2,492,481, or about 10 times the average daily volume in
the stock.
The closing price was $43.28, amounting to a market cap of $1,250,000,000,
about -23.57% off the highest price in the last 12 months. The stock has
been trading at a range between $33.67 and $56.63.
APOG is in the Auto Parts:O.E.M. industry, part of the Capital Goods sector.
Looking at its valuation, the stock is now trading at 17.88 times earnings.