| Symbol | Name | Country | Exchange |
|---|---|---|---|
| AME | AMETEK, Inc. | US | NYSE |
| PYR | PyroGenesis Canada Inc. | US | NASDAQ |
| RIO | Rio Tinto Plc | US | NYSE |
| RTNTF | Rio Tinto Ltd Aud2 O | US | OTC |
| 078600 | Daejoo Electronic Materials Co. Ltd | KR | KQ |
| 603260 | Hoshine Silicon Ind Co Ltd | CN | SHG |
| 300034 | Beijing Cisri Gaona Materials Tech | CN | SHE |