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

FactSet Research Systems Inc. C (symbol: FDS) was one of the worst losers
of the trading day today (2016-09-27), losing -6.73%. The number of shares
that changed hands was 2,070,697, or about 7 times the average daily volume
in the stock.
The closing price was $164.34, amounting to a market cap of $6,680,000,000,
about -10.28% off the highest price in the last 12 months. The stock has
been trading at a range between $135.95 and $183.17.
FDS is in the Computer Software: Programming, Data Processing industry,
part of the Technology sector. It first went public in 1996.
Looking at its valuation, the stock is now trading at 26.68 times earnings.