| Symbol | Name | Country | Exchange |
|---|---|---|---|
| QUTIF | Questor Technology I | US | OTC |
| REGRF | Reg Technologies | US | OTC |
| RGUS | REGI U.S., Inc | US | OTC |
| RYDAF | Royal Dutch Shell plc | US | OTC |
| SCRPF | Sembcorp Industries | US | OTC |
| SHOM | Southern Home Medical, Inc | US | OTC |
| SHWDF | Showa Denko Kk | US | OTC |
| SHWDY | Showa Denko Kk | US | OTC |
| SKENF | Sasakura Engineering CO Ltd | US | OTC |
| SNMRF | Snam S.p.A | US | OTC |
| SNMRY | Snam S.p.A | US | OTC |
| SRCU | Spire Inc | US | OTC |
| SSLZY | Santos Ltd ADR | US | OTC |
| SUUIF | Superior Plus Corp | US | OTC |
| SYNE | Synthesis Energy Sys | US | OTC |
| TECFF | Teco 2030 ASA | US | OTC |
| TKGSF | Tokyo Gas Co Ltd | US | OTC |
| TKGSY | Tokyo Gas Co Ltd ADR | US | OTC |
| TRNF | Taronis Fuels Inc | US | OTC |
| TRNFQ | Taronis Fuels Inc | US | OTC |