Two Oklahoma City energy companies and two in Tulsa are on the latest Fortune list of the 500 largest companies.
Tulsa-based Oneok Inc. is at No. 192 with revenue of about $13.4 billion and Williams Companies Inc. in Tulsa is 208th with $12.9 billion in revenue.
Oklahoma City-based Devon Energy Corp. is 221st with $12.1 billion in revenue, while Oklahoma City's Chesapeake Energy Corp. is No. 324 with $7.8 billion revenue.
The top two companies on the list _unchanged from last year _ include Wal-Mart Stores Inc. and Exxon Mobil Corp., respectively.
Chevron Corp. edged up to third from last year's fourth place, while General Motors Corp. fell from third to fourth place and ConocoPhillips held steady at fifth.