| Q | Qwest Communications International Inc. | QELP | Quest Energy Partners, L.P. | QQQX | NASDAQ Premium Income Growth Fund Inc |
| QABA | First Trust NASDAQ ABA Community Bank In | QEPC | QEP Co. Inc. | QQXT | First Trust NASDAQ-100 Ex-Tech Sector |
| QADI | QAD Inc. | QGEN | Qiagen NV | QRCP | Quest Resource Corp. |
| QAI | IQ Hedge Mutli-Strategy Tracker ETF | QGLY | The Quigley Corporation | QSFT | Quest Software Inc. |
| QBAK | Qualstar Corp. | QGP | The Quantum Group, Inc. | QSII | Quality Systems Inc. |
| QBC | Cubic Energy Inc. | QID | Proshares QQQ | QTEC | FIRST TRUST NASDAQ-1 |
| QCC | Quest Capital Corp. | QLD | Ultra QQQ Proshares | QTM | Quantum Corp. |
| QCCO | QC Holdings Inc. | QLGC | QLogic Corp. | QTWW | Quantum Fuel Systems Technologies Worldwide Inc. |
| QCLN | First Trust NASDAQ Edg US Lqd Sr Ind Fd | QLTI | QLT Inc. | QUIK | QuickLogic Corp. |
| QCOM | QUALCOMM Inc. | QLTY | Quality Distribution Inc. | QUIX | Quixote Corp. |
| QCOR | Questcor Pharmaceuticals, Inc. | QMM | Quaterra Resources Inc. | QUOT | Life Quotes Inc |
| QCRH | QCR Holdings Inc. | QNST | QuinStreet Corp | QXM | Qiao Xing Mobile Communication Co., Ltd. |
| QDEL | Quidel Corp. | QQEW | FIRST TRUST NASDAQ-1 | ||
| QDHC | Quadramed Corp. | QQQQ | Powershares QQQ |
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