| Q | Quintiles Transitional Holdings | 122.4 | 119.0 | 120.5 | 595.4K | 2.0 | | 1.69 | |
| QLEP | Quantum Leap Acquisition Corp | 9.970 | 9.970 | 9.970 | 100 | -0.030 | | 0.30 | |
| QRE.U | Quasaredge Acquisition Corp Unit | 10.28 | 10.28 | 10.28 | 500 | 0.11 | | 1.08 | |
| QSR | Restaurant Brands International | 81.36 | 78.75 | 80.18 | 1.7M | -0.09 | | 0.11 | |