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

Chesapeake Energy Corporation C (symbol: CHK) was one of the worst losers
of the trading day today (2016-09-19), losing -7.35%. The number of shares
that changed hands was 115,223,794, or about 3 times the average daily
volume in the stock.
The closing price was $6.81, amounting to a market cap of $5,220,000,000,
about -28.69% off the highest price in the last 12 months. The stock has
been trading at a range between $1.5 and $9.55.
CHK is in the Oil & Gas Production industry, part of the Energy sector.