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

Weight Watchers International I (symbol: WTW) was one of the worst losers
of the trading day today (2015-10-21), losing -15.62%. The number of shares
that changed hands was 25,899,813, or about 8 times the average daily
volume in the stock.
The closing price was $15.4, amounting to a market cap of $881,030,000,
about -48.39% off the highest price in the last 12 months. The stock has
been trading at a range between $3.67 and $29.84.
WTW is in the Other Consumer Services industry, part of the Consumer
Services sector. It first went public in 2001.
Looking at its valuation, the stock is now trading at 13.52 times earnings.