$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 (2016-01-25), losing -15.95%. The number of shares
that changed hands was 26,612,959, or about 1 times the average daily
volume in the stock.
The closing price was $2.95, amounting to a market cap of $1,960,000,000,
about -86.27% off the highest price in the last 12 months. The stock has
been trading at a range between $2.69 and $21.49.
CHK is in the Oil & Gas Production industry, part of the Energy sector.