Chevron Corporation (24%)
Exxon Mobil Corporation (21%)
ConocoPhillips (4.6%)
Schlumberger NV (4.4%)
Phillips 66 (4.4%)
Kinder Morgan Inc Class P (4.3%)
Marathon Petroleum Corporation (4.2%)
EOG Resources Inc. (4.2%)
Williams Companies Inc. (3.9%)
Valero Energy Corporation (3.6%)
Other (21%)
24%
21%
4.6%
4.4%
4.4%
4.3%
4.2%
4.2%
3.9%
3.6%
21%