- UDIRF — United Internet AG
- UDIV — Franklin U.S. Core Dividend Tilt Index ETF
- UDN — Invesco DB US Dollar Index Bearish Fund
- UDOC.CN — Unidoc Health Corp.
- UDOCF — Unidoc Health Corp.
- UDOW — ProShares - UltraPro Dow30
- UDR — UDR, Inc.
- UDSG — UDS Group, Inc.
- UE — Urban Edge Properties
- UEC — Uranium Energy Corp.
- UECG — Leverage Shares 2x Long UEC Daily ETF
- UEEC — United Health Products, Inc.
- UEIC — Universal Electronics Inc.
- UELKY — Ülker Bisküvi Sanayi A.S.
- UELMO — Union Electric Company
- UEPCN — Union Electric Company
- UEPCO — Union Electric Company
- UEPCP — Union Electric Company
- UEPEM — Union Electric Company
- UEPEN — Union Electric Company
- UEPEO — Union Electric Company
- UEPEP — Union Electric Company
- UETH — United Ethanol, LLC
- UETMF — Universal Entertainment Corporation
- UEVM — VictoryShares Emerging Markets Value Momentum ETF
- UFABQ — Unique Fabricating, Inc.
- UFC.V — Urbanfund Corp.
- UFCP — Union Financial Corporation
- UFCS — United Fire Group, Inc.
- UFEB — Innovator U.S. Equity Ultra Buffer ETF
- UFG — Uni-Fuels Holdings Limited
- UFGSY — Unipol Assicurazioni S.p.A.
- UFI — Unifi, Inc.
- UFIV — US Treasury 5 Year Note ETF
- UFMG — Universal Mfg. Co.
- UFO — Procure Space ETF
- UFOX — Defiance Space and Connective Tech ETF
- UFPI — UFP Industries, Inc.
- UFPT — UFP Technologies, Inc.
- UG — United-Guardian, Inc.
- UGA — United States Gasoline Fund LP
- UGD.V — Unigold Inc.
- UGDIF — Unigold Inc.
- UGE — ProShares - Ultra Consumer Staples
- UGHB — Universal Global Hub Inc.
- UGI — UGI Corporation
- UGL — ProShares - Ultra Gold
- UGLD — Direxion Daily Gold Bull 2X ETF
- UGP — Ultrapar Participações S.A.
- UHAL — U-Haul Holding Company
- UHAL-B — U-Haul Holding Company
- UHOIF — Ushio Inc.
- UHS — Universal Health Services, Inc.
- UHT — Universal Health Realty Income Trust
- UI — Ubiquiti Inc.
- UILCF — Singapore Land Group Limited
- UILCY — Singapore Land Group Limited
- UIS — Unisys Corporation
- UITA — Utilicraft Aerospace Industries, Inc.
- UITB — VictoryShares Core Intermediate Bond ETF
- UIVM — VictoryShares International Value Momentum ETF
- UJAN — Innovator U.S. Equity Ultra Buffer ETF
- UJB — ProShares - Ultra High Yield
- UJUL — Innovator U.S. Equity Ultra Buffer ETF - July
- UJUN — Innovator U.S. Equity Ultra Buffer ETF - June
- UK — Ucommune International Ltd
- UL — Unilever PLC
- ULBI — Ultralife Corporation
- ULCC — Frontier Group Holdings, Inc.
- ULE — ProShares - Ultra Euro
- ULGX — Urologix, Inc.
- ULH — Universal Logistics Holdings, Inc.
- ULIHF — The United Laboratories International Holdings Limited
- ULIX — Ulixe Corp.
- ULPRF — ULS Group, Inc.
- ULS — UL Solutions Inc.
- ULSP — Ultimate Sports Entertainment, Inc.
- ULST — State Street Ultra Short Term Bond ETF
- ULTA — Ulta Beauty, Inc.
- ULTA.CN — Ultra Brands Ltd.
- ULTI — REX IncomeMax Option Strategy ETF
- ULTRF — Ultrapetrol (Bahamas) Limited
- ULTXF — Ultra Lithium Inc.
- ULTY — YieldMax Ultra Option Income Strategy ETF
- ULVM — VictoryShares US Value Momentum ETF
- UMAC — Unusual Machines, Inc.
- UMAM — Umami Sustainable Seafood Inc.
- UMAR — Innovator U.S. Equity Ultra Buffer ETF
- UMAV — UAV Corp.
- UMAX — UMAX Group Corp.
- UMAX.AX — BetaShares - S&P 500 Yield Maximiser Complex ETF
- UMAX.TO — Hamilton Utilities YIELD MAXIMIZER ETF
- UMAY — Innovator U.S. Equity Ultra Buffer ETF
- UMBF — UMB Financial Corporation
- UMC — United Microelectronics Corporation
- UMCN — UMC, Inc.
- UMDD — ProShares - UltraPro MidCap 400
- UMGNF — Universal Music Group N.V.
- UMGP — Universal Media Group Inc.
