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

Citrix Systems, Inc. (symbol: CTXS) was one of the worst losers of the
trading day today (2015-11-18), losing -10.05%. The number of shares that
changed hands was 8,156,513, or about 4 times the average daily volume in
the stock.
The closing price was $70.54, amounting to a market cap of $10,850,000,000,
about -16.19% off the highest price in the last 12 months. The stock has
been trading at a range between $56.47 and $84.17.
CTXS is in the Computer Software: Prepackaged Software industry, part of
the Technology sector. It first went public in 1995.
Looking at its valuation, the stock is now trading at 40.42 times earnings.