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

Glatfelter Common Stock (symbol: GLT) was one of the worst losers of the
trading day today (2016-05-03), losing -14.87%. The number of shares that
changed hands was 531,364, or about 2 times the average daily volume in the
stock.
The closing price was $19.93, amounting to a market cap of $865,800,000,
about -20.66% off the highest price in the last 12 months. The stock has
been trading at a range between $14.09 and $25.12.
GLT is in the Paper industry, part of the Basic Industries sector.
Looking at its valuation, the stock is now trading at 13.56 times earnings.