| Nom | Code | Valeur | Code ISIN |
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| UAL CORPORATION | UAUA | Action | US9025498075 |
| UCBH HOLDINGS, INC. | UCBH | Action | US90262T3086 |
| UCN, INC. | UCNN | Action | |
| UFP TECHNOLOGIES. | UFPT | Action | US9026731029 |
| ULTA SALON, COSMETICS & FRAGRANCE. | ULTA | Action | |
| ULTIMATE SOFTWARE GROUP. (THE) | ULTI | Action | US90385D1072 |
| ULTRA CLEAN HOLDINGS. | UCTT | Action | US90385V1070 |
| ULTRALIFE CORPORATION | ULBI | Action | US9038991025 |
| ULTRAPETROL (BAHAMAS) LIMITED | ULTR | Action | BSP943981071 |
| ULTRATECH, INC. | UTEK | Action | US9040341052 |
| UMB FINANCIAL CORPORATION | UMBF | Action | US9027881088 |
| UMPQUA HOLDINGS CORPORATION | UMPQ | Action | US9042141039 |
| UNICA CORPORATION | UNCA | Action | US9045831016 |
| UNICO AMERICAN CORPORATION | UNAM | Action | US9046071083 |
| UNION BANKSHARES CORPORATION | UBSH | Action | US9053991017 |
| UNION DRILLING, INC. | UDRL | Action | US90653P1057 |
| UNITED AMERICA INDEMNITY, LTD. | INDM | Action | US90933T1097 |
| UNITED AMERICAN HEALTHCARE CORPORATION | UAHC | Action | US90934C1053 |
| UNITED BANCORP, INC. | UBCP | Action | US9099111091 |
| UNITED BANCSHARES. | UBOH | Action | US9094581017 |
| UNITED BANKSHARES. | UBSI | Action | US9099071071 |
| UNITED COMMUNITY BANCORP | UCBA | Action | US90984H1032 |
| UNITED COMMUNITY BANKS. | UCBI | Action | US90984P1057 |
| UNITED COMMUNITY FINANCIAL CORP. | UCFC | Action | US9098391025 |
| UNITED FINANCIAL BANCORP. | UBNK | Action | US91030R1032 |