The Dow Jones industrial average is up 5 points to 12,728 early Monday. The S&P 500 index is up 2 points to 1,317. The Nasdaq composite is up 4 points to 2,791.
Creditors are in negotiations with the Greek government to reduce its debt burden.
Energy companies are making large moves in early trading. Chesapeake Energy Corp. is up 7 percent after the country's second-largest natural gas producer said it plans to cut production.
Apache Corp. is up nearly 2 percent after the oil and gas producer said it plans on buying Cordillera Energy Partners in a $2.85 billion deal.
