| Symbol | Name | Country | Exchange |
|---|---|---|---|
| QIS | Quorum Information Technologies Inc | CA | V |
| QIWI | QIWI plc | RU | MCX |
| QLYS | Qualys, Inc. | US | NASDAQ |
| QOR | Qoria Ltd. | AU | AU |
| QPR1V | QPR Software Oyj | FI | HE |
| QTCOM | Qt Group Oyj | FI | HE |
| QTGPF | Qt Group | US | OTC |
| QTWO | Q2 Holdings, Inc. | US | NYSE |
| QTX | Quartix Holdings Plc | UK | LSE |
| QUICKHEAL | Quick Heal Technologies Limited | IN | NSE |
| QUMU | Qumu Corporation | US | NASDAQ |
| QXO | QXO, Inc. | US | US |
| R1B | Rubean AG | DE | F |
| R1B | Rubean AG | DE | MU |
| R3E | REAL MATTERS INC O.N. | DE | F |
| R7D | Rapid7 Inc | DE | F |
| RABBIT | Rabbit Holdings PCL | TH | BK |
| RABI | AdRabbit Limited | CA | V |
| RAC | Rent-A-Center Inc | DE | F |
| RAMCOSYS | Ramco Systems Limited | IN | NSE |