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

Ciena Corporation Common Stock (symbol: CIEN) was one of the worst losers
of the trading day today (2016-03-03), losing -17.96%. The number of shares
that changed hands was 30,126,056, or about 9 times the average daily
volume in the stock.
The closing price was $16.99, amounting to a market cap of $2,310,000,000,
about -35.89% off the highest price in the last 12 months. The stock has
been trading at a range between $16.32 and $26.5.
CIEN is in the Telecommunications Equipment industry, part of the Public
Utilities sector. It first went public in 1997.
Looking at its valuation, the stock is now trading at 171.62 times earnings.