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

Chesapeake Utilities Corporatio (symbol: CPK) was one of the worst losers
of the trading day today (2015-12-31), losing -5.81%. The number of shares
that changed hands was 252,232, or about 4 times the average daily volume
in the stock.
The closing price was $56.75, amounting to a market cap of $866,460,000,
about -7.17% off the highest price in the last 12 months. The stock has
been trading at a range between $44.37 and $61.13.
CPK is in the Oil & Gas Production industry, part of the Public Utilities
sector.
Looking at its valuation, the stock is now trading at 19.91 times earnings.