| Name | Ticker | Type | ISIN code |
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| QAD INC. | QADI | Stock | US74727D1081 |
| QC HOLDINGS, INC. | QCCO | Stock | US74729T1016 |
| QCR HOLDINGS, INC. | QCRH | Stock | US74727A1043 |
| Q.E.P. CO., INC. | QEPC | Stock | US74727K1025 |
| QIAGEN N.V. | QGEN | Stock | NL0000240000 |
| QIAO XING UNIVERSAL TELEPHONE. | XING | Stock | VGG7303A1093 |
| QLOGIC CORPORATION | QLGC | Stock | US7472771010 |
| QLT INC. | QLTI | Stock | CA7469271026 |
| QSOUND LABS. | QSND | Stock | CA74728C3075 |
| QUADRAMED CORPORATION | QDHC | Stock | |
| QUALCOMM INCORPORATED | QCOM | Stock | US7475251036 |
| QUALITY DISTRIBUTION. | QLTY | Stock | US74756M1027 |
| QUALITY SYSTEMS. | QSII | Stock | US7475821044 |
| QUALSTAR CORPORATION | QBAK | Stock | US74758R1095 |
| QUANTA CAPITAL HOLDINGS LTD. | QNTA | Stock | BMG7313F1068 |
| QUANTUM FUEL SYSTEMS TECHNOLOGIES WORLDW | QTWW | Stock | US74765E1091 |
| QUEPASA CORPORATION | QPSA | Stock | |
| QUESTCOR PHARMACEUTICALS. | QCOR | Stock | |
| QUEST ENERGY PARTNERS, L.P. | QELP | Stock | |
| QUEST RESOURCE CORPORATION | QRCP | Stock | US7483493059 |
| QUEST SOFTWARE, INC. | QSFT | Stock | US74834T1034 |
| QUICKLOGIC CORPORATION | QUIK | Stock | US74837P1084 |
| QUIDEL CORPORATION | QDEL | Stock | US74838J1016 |
| QUIGLEY CORPORATION (THE) | QGLY | Stock | US74838L3042 |
| QUIXOTE CORPORATION | QUIX | Stock | US7490561070 |
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