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

Chesapeake Energy Corporation (symbol: CHK) was one of the biggest winners
of the trading day today (2016-08-18), gaining 9.15%. The number of shares
that changed hands was 80,297,810, or about 2.0 times the average daily
volume in the stock.
The closing price was $6.2, amounting to a market cap of $4,750,000,000,
about -35.08% 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.