| Q | Quintiles Transitional Holdings | 143.6 | 138.8 | 141.0 | 806.4K | -2.8 | | 1.96 | |
| QLE.U | Quantum Leap Acquisition Corp Units | 10.05 | 10.01 | 10.03 | 135.4K | 0.01 | | 0.05 | |
| QLEP | Quantum Leap Acquisition Corp | 10.000 | 9.970 | 9.980 | 12.1K | -0.010 | | 0.10 | |
| QRE- | Quasaredge Acquisition Corp Ord [Qredr] | 0.3000 | 0.2920 | 0.3000 | 16.6K | 0.0299 | | 11.07 | |
| QRED | Quasaredge Acquisition Corp | 9.980 | 9.980 | 9.980 | 51.1K | 0.010 | | 0.10 | |
| QSR | Restaurant Brands International | 76.33 | 75.47 | 75.58 | 997.9K | 0.31 | | 0.41 | |