| Q | Quintiles Transitional Holdings | 122.7 | 117.2 | 118.9 | 1.43M | 3.6 | | 3.09 | |
| QLEP | Quantum Leap Acquisition Corp | 10.09 | 10.09 | 10.09 | 100 | 0.01 | | 0.10 | |
| QRE- | Quasaredge Acquisition Corp Ord [Qredr] | 0.1900 | 0.1900 | 0.1900 | 300 | 0.0050 | | 2.70 | |
| QRE.U | Quasaredge Acquisition Corp Unit | 10.22 | 10.22 | 10.22 | 3.5K | -0.05 | | 0.49 | |
| QRED | Quasaredge Acquisition Corp | 10.09 | 10.09 | 10.09 | 93.0K | 0.01 | | 0.05 | |
| QSR | Restaurant Brands International | 74.89 | 73.53 | 74.30 | 1.51M | -0.34 | | 0.46 | |