| Symbol | Name | Country | Exchange |
|---|---|---|---|
| NOBLE | Noble Corp. PLC | DK | CO |
| NTNOF | Northern Ocean Ltd | US | US |
| PDS | Precision Drilling Corporation | US | NYSE |
| PHXHF | PHX Energy Services Corp | US | OTC |
| PTEN | Patterson-UTI Energy, Inc. | US | NASDAQ |
| RIG | Transocean Ltd (Switzerland) | US | NYSE |
| RIGG34 | Transocean Ltd | BR | SA |
| SDRL | Seadrill Ltd | NO | OL |
| SDSD | SD Standard Drilling PLC | NO | OL |
| VTGDF | Vantage Drilling Company | US | OTC |
| W1T | WESTERN ENERGY SRV. NEW | DE | F |
| WEEEF | Western Energy Svc | US | OTC |