| Symbol | Name | Country | Exchange |
|---|---|---|---|
| KRP | Kimbell Royalty Partners | US | NYSE |
| PTEN | Patterson-UTI Energy, Inc. | US | NASDAQ |
| PXD | Pioneer Natural Resources Company | US | NYSE |
| SMLP | Summit Midstream Partners, LP | US | NYSE |
| USLM | United States Lime & Minerals, Inc. | US | NASDAQ |
| CEL | Challenger Energy Ltd | AU | ASX |
| HRST | Harvest Oil & Gas Corp | US | OTC |
| IGPG | Ignis Petroleum Grp | US | OTC |
| REOS | Reostar Energy Corp | US | OTC |
| TRSI | Trophy Resources Inc | US | OTC |