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

Corning Incorporated Common Sto (symbol: GLW) was one of the worst losers
of the trading day today (2016-04-26), losing -8.35%. The number of shares
that changed hands was 39,562,475, or about 4 times the average daily
volume in the stock.
The closing price was $19.22, amounting to a market cap of $21,390,000,000,
about -14.04% off the highest price in the last 12 months. The stock has
been trading at a range between $15.42 and $22.36.
GLW is in the Telecommunications Equipment industry, part of the Basic
Industries sector.
Looking at its valuation, the stock is now trading at 19.28 times earnings.