| Symbol | Name | Country | Exchange |
|---|---|---|---|
| AMS | American Shared Hospital Services | US | AMEX |
| VRAY | ViewRay, Inc. | US | NASDAQ |
| EKTAF | Elekta AB (publ) | US | OTC |
| EKTAY | Elekta AB (publ) | US | OTC |
| USNU | U.S. NeuroSurgical Holdings, Inc | US | OTC |
| CRAD-B | C-Rad AB (publ) | SE | ST |
| EKTA-B | Elekta AB (publ) | SE | ST |
| 24C | C-RAD AB B | DE | F |