| Q | Quintiles Transitional Holdings | 128.0 | 122.5 | 126.3 | 971.7K | -2.6 | | 2.05 | |
| QLEP | Quantum Leap Acquisition Corp | 9.970 | 9.970 | 9.970 | 100 | -0.030 | | 0.30 | |
| QRE- | Quasaredge Acquisition Corp Ord [Qredr] | 0.2560 | 0.2501 | 0.2501 | 500 | -0.0499 | | 16.63 | |
| QRED | Quasaredge Acquisition Corp | 10.02 | 10.01 | 10.02 | 90.9K | 0.02 | | 0.20 | |
| QSR | Restaurant Brands International | 81.88 | 80.40 | 81.60 | 1.39M | 0.71 | | 0.88 | |