| Q | Quintiles Transitional Holdings | 136.3 | 125.7 | 126.0 | 973.7K | -7.6 | | 5.66 | |
| QRE- | Quasaredge Acquisition Corp Ord [Qredr] | 0.3100 | 0.2800 | 0.2800 | 1.0K | -0.0200 | | 6.67 | |
| QRED | Quasaredge Acquisition Corp | 10.02 | 10.01 | 10.02 | 90.9K | 0.02 | | 0.20 | |
| QSR | Restaurant Brands International | 78.61 | 76.08 | 77.09 | 1.45M | 0.53 | | 0.69 | |