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

Wayfair Inc. Class A Common Sto (symbol: W) was one of the worst losers of
the trading day today (2016-08-09), losing -19.59%. The number of shares
that changed hands was 13,280,456, or about 11 times the average daily
volume in the stock.
The closing price was $38.8, amounting to a market cap of $3,290,000,000,
about -31.74% off the highest price in the last 12 months. The stock has
been trading at a range between $28.85 and $56.84.
W is in the Catalog/Specialty Distribution industry, part of the Consumer
Services sector. It first went public in 2014.