| U Consumer Finance SAE | | 1 | 10 |
| u-blox Holding AG | | 3 | 22 |
| U-Haul Holding Company | UHAL | 4 | 88 |
| U-Ming Marine Transport Corp. | | 3 | 16 |
| U-NEXT HOLDINGS Co., Ltd. | | 4 | 25 |
| U.S. Bancorp | USB | 3 | 1,607 |
| U.S. Energy Corp. | | 3 | 25 |
| U.S. Gold Corp. | USAU | 3 | 53 |
| U.S. GoldMining Inc. | USGO | 3 | 29 |
| U.S. Physical Therapy, Inc. | | 3 | 393 |
| U.S. Silica Holdings, Inc. | | 2 | 0 |
| UACJ Corp. | | 3 | 40 |
| UBE Corp. | | 3 | 34 |
| Uber Technologies, Inc. | UBER | 5 | 1,825 |
| Ubicom Holdings, Inc. | | 3 | 11 |
| Ubiquiti Inc. | UI | 3 | 119 |
| Ubisoft Entertainment SA | | 3 | 52 |
| UBS GROUP AG | | 3 | 565 |
| UBTECH Robotics Corp. Ltd. | | 10 | 54 |
| UCB SA | | 3 | 245 |
| Uchida Yoko Co., Ltd. | | 3 | 21 |
| Udemy, Inc. | | 3 | 255 |
| UDR, Inc. | UDR | 3 | 747 |
| UEM Sunrise Berhad | | 3 | 13 |
| UFP Industries, Inc. | UFPI | 3 | 569 |
| UFP Technologies, Inc. | UFPT | 3 | 436 |
| UGI Corporation | | 3 | 763 |
| UIE Plc | | 3 | 16 |
| UiPath, Inc. | PATH | 3 | 573 |
| Ujjivan Small Finance Bank Limited | | 6 | 15 |
| UK Commercial Property REIT Ltd. | | 1 | 0 |
| UL Solutions Inc. | ULS | 2 | 503 |
| Ulker Biskuvi Sanayi AS | | 5 | 29 |
| Ulta Beauty, Inc. | ULTA | 5 | 1,160 |
| Ultra Clean Holdings, Inc. | UCTT | 3 | 460 |
| Ultragenyx Pharmaceutical Inc. | RARE | 3 | 431 |
| Ultralife Corporation | ULBI | 3 | 58 |
| Ultrapar Participacoes SA | | 3 | 68 |
| Ultrapar Participacoes SA | | 3 | 17 |
| UltraTech Cement Ltd. | | 7 | 92 |
| ULVAC, Inc. | | 3 | 38 |
| UMB Financial Corporation | UMBF | 4 | 611 |
| UMH Properties, Inc. | UMH | 3 | 389 |
| Umicore SA | | 3 | 69 |
| Umm Al Qura Development & Construction Co. | | 1 | 12 |
| UMS Integration Limited | | 5 | 21 |
| Under Armour, Inc. | UAA | 4 | 485 |
| Uni-President China Holdings Ltd. | | 3 | 43 |
| Uni-President Enterprises Corp. | | 3 | 74 |
| Unibail-Rodamco-Westfield NV | | 3 | 26 |
| Unibail-Rodamco-Westfield SE | | 6 | 158 |
| Unicaja Banco SA | UNCJY | 4 | 64 |
| Unicharm Corp. | | 3 | 122 |
| UniCredit SpA | | 5 | 298 |
| UNID Co., Ltd. | | 3 | 17 |
| Unifi, Inc. | UFI | 3 | 92 |
| UniFirst Corporation | UNF | 4 | 546 |
| Unigel Netherlands Holding Corporation B.V. | | 2 | 11 |
| Unigroup Guoxin Microelectronics Co., Ltd. | | 10 | 36 |
| UNILEVER PLC | UL | 5 | 650 |
| Unilever Plc | UL | 4 | 285 |
| Unimicron Technology Corp. | | 3 | 88 |
| Union Bank of India | | 3 | 69 |
| Union Bank of Taiwan | | 3 | 15 |
| Union Bankshares, Inc. | UNB | 3 | 41 |
| Union Pacific Corporation | UNP | 6 | 1,973 |
| Union Tool Co. | | 3 | 14 |
| Unipar Carbocloro SA | | 3 | 14 |
| Uniphar Plc | | 3 | 16 |
| Unipol Assicurazioni SpA | | 5 | 145 |
| UnipolSai Assicurazioni SpA | | 1 | 0 |
| Unipres Corp. | | 3 | 22 |
| UNIQA Insurance Group AG | | 3 | 45 |
| uniQure N.V. | QURE | 4 | 256 |
| Unisplendour Corp. Ltd. | | 19 | 39 |
| Unisys Corporation | UIS | 3 | 219 |
| Unit Corporation | | 3 | 12 |
| Unitech Printed Circuit Board Corp. | | 3 | 15 |
| United Airlines Holdings, Inc. | UAL | 3 | 1,096 |
| UNITED ARROWS LTD. | | 3 | 21 |
| United Bancorp, Inc. | | 3 | 12 |
| United Bankshares, Inc. | | 3 | 502 |
| United Breweries Limited | CCU | 7 | 22 |
| United Community Banks, Inc. | UCB | 3 | 480 |
| United Electronics Co. | | 5 | 20 |
| United Energy Group Limited | | 4 | 26 |
| United Fire Group, Inc. | UFCS | 3 | 373 |
| United Homes Group, Inc. | | 2 | 0 |
| United Integrated Services Co., Ltd. | | 3 | 57 |
| United International Transportation Co. Ltd. | | 6 | 22 |
| United Internet AG | | 3 | 40 |
| United Malt Group Limited | | 1 | 0 |
| United Microelectronics Corp. | UMC | 3 | 107 |
| United Microelectronics Corp. | UMC | 3 | 34 |
| United Natural Foods, Inc. | UNFI | 3 | 444 |
| United Nova Technology Co., Ltd. | | 7 | 30 |
| United Overseas Bank Limited (Singapore) | | 3 | 163 |
| United Parcel Service, Inc. | UPS | 6 | 1,600 |
| United Parks & Resorts Inc. | PRKS | 5 | 354 |
| United Plantations Berhad | | 4 | 29 |
| United Renewable Energy Co., Ltd. | | 3 | 9 |
| United Rentals, Inc. | URI | 5 | 1,343 |
| United Security Bancshares | | 3 | 46 |
| United Spirits Limited | | 9 | 74 |
| United States Antimony Corporation | UAMY | 3 | 169 |
| United States Lime & Minerals, Inc. | USLM | 3 | 333 |
| United States Steel Corporation | | 3 | 0 |
| United Super Markets Holdings, Inc. | | 3 | 25 |
| United Therapeutics Corporation | UTHR | 3 | 911 |
| United Tractors | | 3 | 10 |
| United Urban Investment Corp. | | 2 | 44 |
| United Utilities Group Plc | | 3 | 143 |
| United-Guardian, Inc. | UG | 3 | 42 |
| UnitedHealth Group Incorporated | UNH | 8 | 2,079 |
| Uniti Group Inc. | UNIT | 4 | 8 |
| Uniti Group Inc. | UNIT | 3 | 407 |
| Unitil Corporation | UTL | 3 | 369 |
| Unity Bancorp, Inc. | | 3 | 94 |
| Unity Biotechnology, Inc. | | 1 | 0 |
| Unity Software Inc. | U | 3 | 618 |
| Universal Cement Corp. | | 3 | 13 |
| Universal Corporation | | 4 | 375 |
| Universal Display Corporation | | 3 | 605 |
| Universal Electronics Inc. | UEIC | 3 | 79 |
| Universal Entertainment Corp. | | 4 | 21 |
| Universal Health Realty Income Trust | UHT | 3 | 309 |
| Universal Health Services, Inc. | UHS | 3 | 797 |
| Universal Insurance Holdings, Inc. | UVE | 3 | 371 |
| Universal Logistics Holdings, Inc. | ULH | 3 | 172 |
| Universal Microwave Technology, Inc. | | 2 | 29 |
| Universal Music Group NV | UNVGY | 3 | 201 |
| Universal Robina Corporation | | 3 | 26 |
| Universal Scientific Industrial (Shanghai) Co., Ltd. | | 6 | 35 |
| Universal Security Instruments, Inc. | | 4 | 20 |
| Universal Stainless & Alloy Products, Inc. | | 2 | 0 |
| Universal Technical Institute, Inc. | UTI | 3 | 379 |
| Universal Vision Biotechnology Co. Ltd. | | 3 | 7 |
| Univest Financial Corporation | UVSP | 3 | 322 |
| UNO Minda Limited | | 10 | 31 |
| UNRIVALED BRANDS INC. | | 1 | 0 |
| Unum Group | UNM | 3 | 764 |
| Unusual Machines, Inc. | UMAC | 1 | 16 |
| Uob-Kay Hian Holdings Limited | | 3 | 18 |
| UOL Group Limited | | 3 | 99 |
| Upbound Group, Inc. | UPBD | 3 | 392 |
| uPI Semiconductor Corp. | | 4 | 13 |
| UPL Limited | | 8 | 95 |
| Upland Software, Inc. | UPLD | 3 | 61 |
| UPM-Kymmene Oyj | | 3 | 136 |
| Upstart Holdings, Inc. | UPST | 3 | 440 |
| Upstream Bio, Inc. | UPB | 2 | 76 |
| Upwork Inc. | UPWK | 3 | 450 |
| Ur-Energy Inc. | URG | 3 | 117 |
| Uranium Energy Corp. | UEC | 4 | 388 |
| Urban Edge Properties | UE | 3 | 433 |
| Urban Logistics REIT PLC | | 3 | 0 |
| Urban One, Inc. | UONE | 4 | 8 |
| Urban Outfitters, Inc. | URBN | 3 | 562 |
| urban-gro, Inc. | | 2 | 18 |
| UroGen Pharma Ltd. | URGN | 4 | 285 |
| Urstadt Biddle Properties Inc. | | 1 | 0 |
| US Foods Holding Corp. | USFD | 3 | 850 |
| USA Rare Earth, Inc. | USAR | 2 | 104 |
| USANA Health Sciences, Inc. | USNA | 3 | 247 |
| USCB Financial Holdings, Inc. | USCB | 3 | 62 |
| Usha Martin Limited | | 7 | 14 |
| Ushio, Inc. | | 3 | 29 |
| USI Corp. | | 3 | 7 |
| Usinas Siderurgicas de Minas Gerais SA-Usiminas | | 3 | 17 |
| Usio, Inc. | USIO | 4 | 28 |
| USS Co., Ltd. | | 3 | 79 |
| UT Group Co., Ltd. | | 3 | 22 |
| Utah Medical Products, Inc. | UTMD | 3 | 204 |
| UTI Asset Management Company Limited | | 8 | 16 |
| UTZ Brands, Inc. | UTZ | 3 | 333 |
| UWM Holdings Corporation | UWMC | 3 | 286 |