| Symbol | Name | Country | Exchange |
|---|---|---|---|
| OII | Oceaneering International, Inc. | US | NYSE |
| ACGYF | Subsea 7 S.A. | US | OTC |
| DPDW | Deep Down Inc | US | OTC |
| SUBCY | Subsea 7 S.A | US | OTC |
| REACH | Reach Subsea | NO | OL |
| SUBC | Subsea 7 SA | NO | OL |
| DU4 | Mermaid Maritime Public Company Limited | SG | SG |
| MMMPF | Mermaid Maritime Public Company Limited | US | US |
| 6FJ | FISHER (JAMES)SONS LS-25 | DE | F |
| OII | Oceaneering International Inc | DE | F |
| SOC | Subsea 7 S.A. | DE | F |
| SOCA | Subsea 7 S.A | DE | F |
| 6FJ | James Fisher and Sons plc | DE | STU |
| 0OGK | Subsea 7 SA | GB | LSE |