- LSCC — Lattice Semiconductor Corporation
- LSCG — Lighting Science Group Corporation
- LSCP — The Natixis Loomis Sayles Dynamic Core Plus ETF
- LSDAF — Lassonde Industries Inc.
- LSE — Leishen Energy Holding Co., Ltd.
- LSEGY — London Stock Exchange Group plc
- LSEQ — Harbor Long-Short Equity ETF (LSEQ)
- LSF — Laird Superfood, Inc.
- LSFG — Lifestore Financial Group, Inc.
- LSGOF — Land Securities Group plc
- LSGR — Natixis Loomis Sayles Focused Growth ETF
- LSIHF — Lai Sun Garment (International) Limited
- LSIIF — Lisi S.A.
- LSLCF — Lachlan Star Limited
- LSMLF — Lodestar Minerals Limited
- LSMNF — lastminute.com N.V.
- LSPD — Lightspeed Commerce Inc.
- LSPD.TO — Lightspeed Commerce Inc.
- LSR.AX — Lodestar Minerals Limited
- LSRCF — Lasertec Corporation
- LSRCY — Lasertec Corporation
- LST — Leuthold Select Industries ETF
- LSTA — Lisata Therapeutics, Inc.
- LSTB — Natixis ETF Trust Natixis Loomis Sayles Total Return Bond ETF
- LSTR — Landstar System, Inc.
- LSTR.V — Lodestar Metals Corp.
- LSVD — LSV Disciplined Value ETF
- LTAX — Nomura Tax-Free USA ETF
- LTBR — Lightbridge Corporation
- LTC — LTC Properties, Inc.
- LTCC — Canary Litecoin ETF
- LTCH — Latch, Inc.
- LTCP — Life's Time Capsule Services, Inc.
- LTEC — LOUD Technologies Inc.
- LTFD — Littlefield Corporation
- LTGHF — Life Healthcare Group Holdings Limited
- LTGHY — Life Healthcare Group Holdings Limited
- LTGJ — Xiamen Lutong International Travel Agency Co. Ltd.
- LTGO — Latigo Biotherapeutics Inc.
- LTGR — Long Table Growth Corp.
- LTGRU — Long Table Growth Corp. Units
- LTGRW — Long Table Growth Corp. Warrants
- LTH — Life Time Group Holdings, Inc.
- LTH.V — Lithium Ionic Corp.
- LTHCF — Lithium Ionic Corp.
- LTHIF — InZinc Mining Ltd.
- LTHM.CN — Champion Electric Metals Inc.
- LTHO — Legacy Technology Holdings, Inc.
- LTHUQ — Lithium Technology Corporation
- LTL — ProShares - Ultra Communication Services
- LTM — LATAM Airlines Group S.A.
- LTMCF — Lithium Chile Inc.
- LTNC — Labor Smart, Inc.
- LTNG.V — Lightning Resource Corp.
- LTOUF — Larsen & Toubro Limited
- LTPZ — PIMCO 15+ Year U.S. TIPS Index Exchange-Traded Fund
- LTR.AX — Liontown Resources Limited
- LTRBF — Latrobe Magnesium Limited
- LTRCF — The Lottery Corporation Limited
- LTRE — Learning Tree International, Inc.
- LTRN — Lantern Pharma Inc.
- LTRX — Lantronix, Inc.
- LTRYW — Sports Entertainment Gaming Global Corporation Warrants
- LTSAP — Osaic Financial Services, Inc.
- LTSRF — Lotus Resources Limited
- LTTI — FT Vest 20+ Year Treasury & Target Income ETF
- LTUM — Lithium Corporation
- LTUS — Lotus Pharmaceuticals, Inc.
- LU — Lufax Holding Ltd
- LU7.AX — Lithium Universe Limited
- LUC.TO — Lucara Diamond Corp.
- LUCA.V — Luca Mining Corp.
- LUCD — Lucid Diagnostics Inc.
- LUCK — Lucky Strike Entertainment Corporation
- LUCRF — Lucara Diamond Corp.
- LUCY — Innovative Eyewear, Inc.
- LUCYW — Lucyd, Inc
- LUD — Luda Technology Group Limited
- LUDG — Ludwig Enterprises, Inc.
- LUFFF — Herbal Dispatch Inc.
- LUG.TO — Lundin Gold Inc.
- LUGDF — Lundin Gold Inc.
- LUKEF — Real Luck Group Ltd.
- LULG — Leverage Shares 2x Long LULU Daily ETF
- LULU — Lululemon Athletica Inc.
- LULU.NE — Lululemon Athletica Inc.
- LUMA — KraneShares Photonic and Optical ETF
- LUMB — Lumbee Guaranty Bank
- LUMN — Lumen Technologies, Inc.
- LUN.TO — Lundin Mining Corporation
- LUNA — Luna Innovations Incorporated
- LUNG — Pulmonx Corporation
- LUNL — Daily Target 2X Long LUNR ETF
- LUNMF — Lundin Mining Corporation
- LUNR — Intuitive Machines, Inc.
- LUNR.TO — LunR Royalties Corp.
- LUV — Southwest Airlines Co.
- LUVU — Luvu Brands, Inc.
- LUX.CN — Newlox Gold Ventures Corp.
- LUXE — LuxExperience B.V.
