- ISRMF — Isramco Negev 2 Limited Partnership
- ISSB — IncomeSTKd 1x US Stocks & 1x Bitcoin Premium ETF
- ISTB — iShares Core 1-5 Year USD Bond ETF
- ISTKF — Intellistake Technologies Corp.
- ISTM — iShares U.S. ETF Trust iShares Transition-Enabling Metals ETF
- ISTR — Investar Holding Corporation
- ISUL — GraniteShares 2x Long ISRG Daily ETF
- ISUNQ — iSun, Inc.
- ISUZF — Isuzu Motors Limited
- ISUZY — Isuzu Motors Limited
- ISVG — Integrated Services Group Inc
- ISVL — iShares International Developed Small Cap Value Factor ETF
- ISVLF — IMPACT Silver Corp.
- ISWN — Amplify BlackSwan ISWN ETF (International)
- IT — Gartner, Inc.
- ITA — iShares U.S. Aerospace & Defense ETF
- ITAN — Sparkline Intangible Value ETF
- ITAYY — PT Indo Tambangraya Megah Tbk
- ITB — iShares U.S. Home Construction ETF
- ITCFY — Investec Group
- ITCJ — Infinite Technology Corporation
- ITDB — iShares LifePath Target Date 2030 ETF
- ITDC — iShares LifePath Target Date 2035 ETF
- ITDD — iShares LifePath Target Date 2040 ETF
- ITDE — iShares LifePath Target Date 2045 ETF
- ITDF — iShares LifePath Target Date 2050 ETF
- ITDG — iShares LifePath Target Date 2055 ETF
- ITDH — iShares LifePath Target Date 2060 ETF
- ITDI — iShares LifePath Target Date 2065 ETF
- ITDJ — iShares LifePath Target Date 2070 ETF
- ITEC — Intertech Solutions , Inc.
- ITEQ — Amplify BlueStar Israel Technology ETF
- ITEX — ITEX Corporation
- ITFRF — ITFOR Inc.
- ITFS — Itafos Inc.
- ITG — ITG Inc.
- ITGGF — Italgas S.p.A.
- ITGMF — Airengy Tech Ltd.
- ITGR — Integer Holdings Corporation
- ITH.TO — International Tower Hill Mines Ltd.
- ITHA — ITHAX Acquisition Corp III
- ITHAU — ITHAX Acquisition Corp III
- ITHAW — ITHAX Acquisition Corp.
- ITHUF — iAnthus Capital Holdings, Inc.
- ITIC — Investors Title Company
- ITJTY — Intrum AB (publ)
- ITKH — iTeknik Holding Corporation
- ITM — VanEck Intermediate Muni ETF
- ITM.AX — iTech Minerals Ltd
- ITMC — Itoco Inc.
- ITMPF — ITM Power Plc
- ITMSF — Intermap Technologies Corporation
- ITNF — Internet Infinity, Inc.
- ITNS — Itonis, Inc.
- ITOC — iTonic Holdings Ltd.
- ITOCF — ITOCHU Corporation
- ITOCY — ITOCHU Corporation
- ITOEF — Ito En, Ltd.
- ITOT — iShares Core SP Total US Stock Market ETF
- ITOX — IIOT-OXYS, Inc.
- ITP — IT Tech Packaging, Inc.
- ITR.V — Integra Resources Corp.
- ITRG — Integra Resources Corp.
- ITRI — Itron, Inc.
- ITRN — Ituran Location and Control Ltd.
- ITRO — Itronics Inc.
- ITRX — inTerra Resources Corp
- ITS.AX — Infotrust Ltd
- ITT — ITT Inc.
- ITUB — Itaú Unibanco Holding S.A.
- ITUP — Interups, Inc.
- ITVI — Interact-TV, Inc.
- ITVPF — ITV plc
- ITVPY — ITV plc
- ITW — Illinois Tool Works Inc.
- ITXXF — Itaconix plc
- IUGNF — Imugene Limited
- IUS — Invesco RAFI Strategic US ETF
- IUSB — iShares Core Universal USD Bond ETF
- IUSDF — AS ONE Corporation
- IUSG — iShares Core SP US Growth ETF
- IUSV — iShares Core SP US Value ETF
- IVA — Inventiva S.A.
- IVAL — Alpha Architect International Quantitative Value ETF
- IVBT — Innovation1 Biotech Inc.
- IVBXF — Innovent Biologics, Inc.
- IVCGF — Iveco Group N.V.
- IVCO — Investco Corporation
- IVCTF — Invictus Energy Limited
- IVDA — Iveda Solutions, Inc.
- IVDAW — Iveda Solutions, Inc.
- IVDN — Innovative Designs, Inc.
- IVE — iShares SP 500 Value ETF
- IVE.AX — iShares MSCI EAFE ETF Units
- IVEP — Dan IVES Wedbush AI Power & Infrastructure ETF
- IVES — Dan Ives Wedbush AI Revolution ETF
- IVEVF — Inventiva S.A.
- IVF — INVO Fertility, Inc.
- IVFH — Innovative Food Holdings, Inc.
- IVFZF — Mapath Capital Corp.