| Name | TIDM | ISIN | Watchlist |
|---|---|---|---|
| UAE | UAE | US46434V7617 | |
| UBND | UBND | US92647X8636 | |
| UBRL | UBRL | US38747R6945 | |
| UCL | UCL | US90354D1046 | |
| UCRD | UCRD | US92647X8552 | |
| UCYB | UCYB | US74347G7705 | |
| UEVM | UEVM | US92647N5436 | |
| UFIV | UFIV | US74933W5105 | |
| UFOX | UFOX | US26922A2895 | |
| UG | UG | US9105711082 | |
| UITB | UITB | US92647N5279 | |
| UIVM | UIVM | US92647N5501 | |
 Ultralife Corporation | ULBI | US9038991025 | |
| ULVM | ULVM | US92647N5766 | |
| UMMA | UMMA | US53656F2680 | |
| Union Bank | UNB | US9054001071 | |
 Unity Bancorp, Inc. | UNTY | US9132901029 | |
| UNIY | UNIY | US97717Y4695 | |
| UPGR | UPGR | US23306X7049 | |
 Upland Software, Inc. | UPLD | US91544A2087 | |
| URGN | URGN | ||
| URNJ | URNJ | US85208P8086 | |
| USAR | USAR | US91733P1075 | |
| USCB | USCB | US90355N1019 | |
 USCL | USCL | US46436E1551 | |
| USDX | USDX | US74933W2540 | |
| USFI | USFI | US35473P4138 | |
 USIG | USIG | US4642886208 | |
 USIN | USIN | US97717Y4109 | |
| USIO | USIO | US9173131080 | |
| USMC | USMC | US74255Y8701 | |
| USOI | USOI | US22539U6029 | |
| USOY | USOY | US88636J3784 | |
| USSH | USSH | US97717Y3945 | |
| USTB | USTB | US92647N5352 | |
| USVM | USVM | US92647N5683 | |
| USVN | USVN | US74933W5287 | |
| USXF | USXF | US46436E7673 | |
| UTEN | UTEN | US74933W5360 | |
| UTHY | UTHY | US74933W5519 | |
| UTRE | UTRE | US74933W4942 | |
| UTWO | UTWO | US74933W4868 | |
| UTWY | UTWY | US74933W5444 | |
 UYLD | UYLD | US03463K7524 |