ot chk .1half..6.40 -6.24= +0.16 +2.56 prct stockcharts.com/c-sc/sc?s=CHK&p=3&b=10&g=0&i=p28929438110&a=243796983&r= stockcharts.com/c-sc/sc?s=CHK&p=5&b=10&g=0&i=p81791512252&a=243796983&r= stockcharts.com/c-sc/sc?s=CHK&p=5&b=10&g=0&i=p28929438110&a=243796983&r=