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

Signet Jewelers Limited Common (symbol: SIG) was one of the worst losers of
the trading day today (2017-01-16), losing -4.24%. The number of shares
that changed hands was 3,152,030, or about 2 times the average daily volume
in the stock.
The closing price was $80.78, amounting to a market cap of $5,620,000,000,
about -35.61% off the highest price in the last 12 months. The stock has
been trading at a range between $72.65 and $125.45.
SIG is in the Consumer Specialties industry, part of the Consumer Services
sector.
Looking at its valuation, the stock is now trading at 12.09 times earnings.