| Symbol | Name | Country | Exchange |
|---|---|---|---|
| PRRUF | Immutep Ltd | US | OTC |
| PSYBF | PsyBio Therapeutics Corp | US | OTC |
| PSYGF | Psyence Group Inc | US | OTC |
| PTCHF | PureTech Health plc | US | OTC |
| PTKFF | PT Kalbe Farma Tbk | US | OTC |
| QRON | Qrons Inc | US | OTC |
| RASP | Rasna Therapeutics Inc | US | OTC |
| RCAR | Renovacare Inc | US | OTC |
| RGBP | Regen Biopharma Inc | US | OTC |
| RGIN | Regenicin Inc | US | OTC |
| RLFTF | Relief Therapeutics Holding AG | US | OTC |
| RLFTY | Relief Therapeutics Hldg Ag | US | OTC |
| RSCF | Reflect Scientific Inc | US | OTC |
| SARTF | Sartorius Ag | US | OTC |
| SBHGF | SBI Holdings, Inc | US | OTC |
| SCND | Scientific Inds Inc | US | OTC |
| SDMHF | Sartorius Stedim Bio | US | OTC |
| SEOVF | Sernova Corp | US | OTC |
| SFBE | Sino Bioenergy Corp | US | OTC |
| SHMP | Naturalshrimp | US | OTC |