| I.A.M. National Pension FundWashington, DC | 1 | 311,750 | Iron Mountain |
| International Business Machines CorporationArmonk, NY | 3 | 291,466 | Fidelity |
| Insperity Holdings, Inc.Kingwood, TX | 2 | 238,029 | Insperity |
| Intermountain Health Care, Inc.Salt Lake City, UT | 3 | 173,766 | T. Rowe Price |
| Intel CorporationFolsom, CA | 3 | 135,876 | Fidelity |
| International Paper CompanyMemphis, TN | 4 | 125,469 | Empower |
| Intl Painters & Allied Trades Ind. Pension Fund-Hanover, MD | 2 | 121,441 | Painting Industry Insurance & Annui |
| I.A.T.S.E. Annuity FundNew York, NY | 1 | 100,475 | Principal |
| Itpeu Pension FundClark, NJ | 1 | 58,365 | n/a |
| Indiana University Health Inc.Indianapolis, IN | 4 | 51,880 | Empower |
| Illinois Tool Works Inc.Glenview, IL | 9 | 47,581 | Empower |
| I.A.M. 401(K) FundWashington, DC | 1 | 45,058 | John Hancock |
| Irb Holding CorporationAtlanta, GA | 1 | 41,945 | Fidelity |
| Integris Health, Inc.Oklahoma City, OK | 4 | 40,303 | Fidelity |
| The Interpublic Group of Companies, Inc.New York, NY | 3 | 40,274 | Empower |
| Iqvia Inc.Durham, NC | 3 | 38,108 | Fidelity |
| Insight Global, LLCAtlanta, GA | 2 | 37,561 | Fidelity |
| Infosys LimitedRichardson, TX | 2 | 36,736 | Fidelity |
| Iowa Health SystemWest Des Moines, IA | 2 | 35,693 | Fidelity |
| Intuit Inc.Mountain View, CA | 1 | 35,542 | Empower |
| International Brotherhood ofPortland, OR | 1 | 32,974 | Principal |
| International Motors, LLCLisle, IL | 8 | 32,645 | Empower |
| Inova Health System FoundationFairfax, VA | 4 | 32,410 | Fidelity |
| - Indiana Laborers Pension FundTerre Haute, IN | 1 | 28,807 | n/a |
| In-N-Out Burger, Inc.Irvine, CA | 1 | 27,846 | Fidelity |
| Iujat 401K Retirement TrustDanbury, CT | 1 | 26,780 | Empower |
| I.A.T.S.E. National Pension FundNew York, NY | 1 | 25,884 | Paychex |
| Ilwu-Pma Pension PlanSan Francisco, CA | 1 | 25,317 | Ilwu-Pma Benefit Plans (Salaries) |
| Ikea North America Services, LLCConshohocken, PA | 2 | 22,940 | Fidelity |
| I.B. of T. Union Local 710 Pension FundMokena, IL | 1 | 21,316 | Merrill |
| Ingles Markets, IncorporatedBlack Mountain, NC | 1 | 18,521 | Principal |
| International Union,security Police Fire Professionals of AmericaRoseville, MI | 1 | 17,204 | Principal |
| Indiana State Council of Carpenters Pension FundTroy, MI | 1 | 17,170 | LM Henderson |
| Icon Clinical Research, LLCBlue Bell, PA | 1 | 16,374 | Empower |
| - Indiana Laborers DC PlanTerre Haute, IN | 1 | 15,678 | n/a |
| Iron Mountain IncorporatedRoyersford, PA | 2 | 14,023 | Fidelity |
| Indiana/Kentucky/Ohio Regional Council Carpenters PeTroy, MI | 1 | 13,860 | L.M. Henderson & Company, LLP |
| Infirmary Health System, Inc.Mobile, AL | 3 | 13,583 | Empower |
| Ironworkers National Pension PlanOakbrook, IL | 1 | 13,533 | n/a |
| Intercontinental Exchange, Inc.Atlanta, GA | 1 | 12,575 | Fidelity |
| Intermountain Retail Store Employees Pension PlanBothell, WA | 1 | 12,226 | Legacy Professionals LLP |
| I.B.E.W. Board of Trustees for Local No 357 Pension TrustLas Vegas, NV | 2 | 12,197 | John Hancock |
| Iue- Cwa Afl-Cio Pension FundWhite Plains, NY | 2 | 11,832 | Regions Bank |
| International Union of Operating Eng. JT Annuity FD of Eastern PennsylFort Washington, PA | 1 | 11,768 | Empower |
| Iheart Communications, Inc.Dallas, TX | 2 | 11,713 | Fidelity |
| Ies Holdings, Inc Retirement Savings PlanHouston, TX | 1 | 11,280 | Voya |
| Installed Building Products, LLCColumbus, OH | 3 | 10,765 | Fidelity |
| Inspira Medical Centers, Inc.Bridgeton, NJ | 4 | 10,415 | Captrust Actuarial Services |
| Icf Consulting Group, Inc.Reston, VA | 3 | 10,403 | Vanguard |
| Indeed, Inc.Stamford, CT | 1 | 10,050 | Fidelity |
| Iron WorkersDorchester, MA | 1 | 9,989 | Bridgeway Benefit Technologies |
| IBEW Local 683ST. Louis, MO | 2 | 9,859 | Fidelity |
| Intuitive Surgical, Inc.Sunnyvale, CA | 1 | 9,821 | Empower |
| Iw Mid-America Pension PlanLansing, IL | 1 | 9,805 | Legacy Professionals LLP |
| Independence Blue Cross, LLCPhiladelphia, PA | 2 | 9,725 | WTW |
| I.U.O.E. #132 Annuity & Savings FDHuntington, WV | 1 | 9,568 | n/a |
| Ingram Industries Inc.Nashville, TN | 3 | 9,021 | John Hancock |
| Insight Enterprises, Inc.Chandler, AZ | 1 | 8,929 | Fidelity |
| Igt Global Solutions CorporationProvidence, RI | 1 | 8,858 | Fidelity |
| Idexx Laboratories, Inc.Westbrook, ME | 1 | 8,856 | Vanguard |
| Iron Workers District Council of Southern Ohio & VicinityVandalia, OH | 1 | 8,817 | Empower |
| Industrial Technologies and Services, LLCDavidson, NC | 4 | 8,683 | Fidelity |
| Iron Workers District Council of Southern Ohio & VicinityVandalia, OH | 1 | 8,620 | n/a |
| I.A.T.S.E. Local 33 Section 401(K)Los Angeles, CA | 1 | 8,574 | Benefit Programs Administration |
| Intelycare, Inc.Quincy, MA | 1 | 8,401 | Empower |
| Insurance Services Office, Inc.Jersey City, NJ | 1 | 8,224 | Principal |
| Ironworkers District Council of the Paci Field Ironworkers Annuity TruMercer Island, WA | 1 | 7,937 | Milliman |
| Intergraph CorporationMadison, AL | 1 | 7,798 | Vanguard |
| Imperial Bag & Paper Co., LLCJersey City, NJ | 3 | 7,778 | Fidelity |
| IBEW Local Union No. 124Kansas City, MO | 2 | 7,616 | Principal |
| IBEW Local 613 Defined Contribution Pension PlanAtlanta, GA | 1 | 7,553 | Vanguard |
| Illumina, Inc.San Diego, CA | 1 | 7,548 | Fidelity |
| Idaho Power CompanyBoise, ID | 2 | 7,543 | T. Rowe Price |
| International Union of Operting Eng. Pen Fund of E.pennsylvania and deFort Washington, PA | 1 | 7,393 | JRP & Associates |
| Ingram Micro Inc.Irvine, CA | 1 | 7,242 | Fidelity |
| Icon Information Consultants, LPHouston, TX | 1 | 7,218 | John Hancock |
| Insulators and Allied Workers National PensioPembroke Pines, FL | 1 | 7,203 | n/a |
| Iuoe Local 399 Deferred Compensation Savings PlanChicago, IL | 1 | 7,098 | John Hancock |
| I.U.O.E. Local 4 Pension FundMedway, MA | 1 | 7,096 | n/a |
| International Union of Operating EngineersTerre Haute, IN | 1 | 7,071 | Stella Higgins |
| Iron Wkers' Mid-America SupplementalLansing, IL | 1 | 7,052 | John Hancock |
| Infor (US), Inc.Alpharetta, GA | 2 | 7,048 | Fidelity |
| Imeg Consultants Corp.Rock Island, IL | 2 | 6,949 | Transition Finance Strategies |
| International Flavors & Fragrances Inc.New York, NY | 4 | 6,811 | Fidelity |
| Infineon Technologies Americas Corp.Milpitas, CA | 5 | 6,769 | Schwab |
| IBEW Local Union No. 126 Retirement PlanCollegeville, PA | 1 | 6,762 | Transamerica |
| Informa USA, Inc.Lake Success, NY | 1 | 6,744 | Fidelity |
| Independent School CollaborativeGreensboro, NC | 1 | 6,694 | n/a |
| Ingredion IncorporatedWestchester, IL | 10 | 6,677 | Fidelity |
| Ineos USA, LLC.League City, TX | 2 | 6,639 | T. Rowe Price |
| Inland Empire Ibew-Neca DefinedPittsburgh, PA | 1 | 6,637 | Empower |
| Integer Holdings CorporationPlano, TX | 1 | 6,590 | Vanguard |
| I.U.O.E. Local 4 Annuity FundMedway, MA | 1 | 6,298 | Fidelity |
| Inter-Con Security Systems, Inc.Pasadena, CA | 2 | 6,223 | n/a |
| IBEW Local Union No. 22/NECAOmaha, NE | 2 | 6,218 | n/a |
| IBEW Local No. 58 Annuity FundMadison Heights, MI | 1 | 6,150 | Empower |
| IBEW Local No. 716 Retirement Trust FundHouston, TX | 1 | 6,109 | Empower |
| Iss Facility Services, Inc.San Antonio, TX | 2 | 6,079 | Principal |
| Infinity Healthcare Management of Illinois LLCHarwood, IL | 1 | 6,007 | n/a |
| Idex CorporationNorthbrook, IL | 3 | 6,007 | Vanguard |
| Inteplast Group CorporationLivingston, NJ | 2 | 5,866 | Merrill |
| Isc Group LLCBaton Rouge, LA | 1 | 5,828 | Nationwide |
| Iowa Independent Higher Education Research FoundationWest Des Moines, IA | 1 | 5,791 | n/a |
| Independent Group Home Living Program, Inc.East Moriches, NY | 2 | 5,780 | Principal |
| Ilitch Holdings, Inc.Detroit, MI | 1 | 5,736 | Fidelity |
| Independent Colleges of Indiana Association, IncIndianapolis, IN | 3 | 5,622 | n/a |
| IBEW Local 716 Pension PlanHouston, TX | 1 | 5,589 | NECA Se |
| Iron Workers Local No. 25Troy, MI | 1 | 5,583 | Empower |
| Int'L Union of Operating Engineers Local 501 IndiWest Covina, CA | 1 | 5,519 | Benesys |
| Ibu of the Pacific NationalPortland, OR | 2 | 5,511 | John Hancock |
| Integrity, LLCDallas, TX | 1 | 5,449 | Principal |
| Icu Medical, Inc.San Clemente, CA | 2 | 5,386 | T. Rowe Price |
| Iron Workers District Council of TN & Vicinity Annuity PlanGoodlettsville, TN | 1 | 5,317 | n/a |
| Iron Workers Local No. 25Troy, MI | 1 | 5,300 | Principal |
| Iron Workers ST. Louis District Council AnnuityMaryland Heights, MO | 1 | 5,260 | Empower |
| Iron Workers ST. Louis District Council PensionMaryland Heights, MO | 1 | 5,242 | n/a |
| I.U.O.E. Local 478 Pension PlanHamden, CT | 1 | 5,230 | Zenith American Solutions |
| Impellam North America Support Services, Inc.Atlanta, GA | 1 | 5,201 | Voya |
| International Union of Painters & Allied Trades DC No. 21 Annuity FundPhiladelphia, PA | 1 | 5,178 | Bridgeway Benefit Technologies |
| Interior Logic Group Holdings IV, LLCSan Diego, CA | 1 | 5,167 | John Hancock |
| Iuoe Local 30 Annuity FundWhitestone, NY | 1 | 5,154 | Fidelity |
| Intra-National Home Care, LLCBlacklick, OH | 1 | 5,139 | ADP |
| Iuoe Local 30 Pension FundWhitestone, NY | 1 | 5,116 | Comprehensive Healthcare Systems in |
| Institute for Defense AnalysesAlexandria, VA | 2 | 5,102 | TIAA |
| IBEW Local 1249 Pension FundCicero, NY | 1 | 5,077 | Morgan Stanley |
| International Rescue CommitteeNew York, NY | 1 | 5,036 | Empower |
| Iron WorkersDorchester, MA | 1 | 4,993 | Bridgeway Benefit Technologies |
| Imerys USA, Inc.Roswell, GA | 4 | 4,852 | Schwab |
| Invesco Holding Company (US), Inc.Atlanta, GA | 2 | 4,845 | Schwab |
| Iron Workers Locals 40, 361 & 417 Pension FundNew York, NY | 1 | 4,795 | n/a |
| Iron Workers District Council Phila Vicinity Retirement and PensionSpringfield, NJ | 1 | 4,756 | n/a |
| Iron Workers Locals 40, 361 & 417 Annuity FundNew York, NY | 1 | 4,715 | n/a |
| Imagine Schools, Inc.Vienna, VA | 1 | 4,588 | Ascensus |
| Irvine Management CompanyNewport Beach, CA | 1 | 4,501 | Fidelity |
| International Automotive Components Group North AmericaSouthfield, MI | 3 | 4,432 | Fidelity |
| Interfoods of America, Inc.Miami, FL | 1 | 4,330 | n/a |
| Intermountain Ironworkers Tax Deferral PlanMurray, UT | 1 | 4,292 | Benesys Administrators |
| Itg Brands, LLCGreensboro, NC | 4 | 4,217 | Fidelity |
| International Restaurant Services, Inc.Toa Baja, PR | 1 | 4,195 | n/a |
| Iron Workers Regional Shop Local Union 855 Pension TrustPasadena, CA | 2 | 4,077 | Transamerica |
| I.U.O.E. Local 132 Pension FundHuntington, WV | 1 | 4,062 | n/a |
| Iuoe Local 478 Annuity FundHamden, CT | 1 | 4,060 | Empower |
| IBEW 1245 Money Purchase PlanSan Ramon, CA | 1 | 3,852 | n/a |
| ITT Industries Holdings, IncStamford, CT | 4 | 3,809 | Empower |
| Ingersoll Rand Industrial U.S., Inc.Davidson, NC | 2 | 3,688 | Milliman |
| Illinois Central School Bus, LLCJoliet, IL | 1 | 3,294 | Principal |
| Iqor, Inc.ST. Petersburg, FL | 1 | 3,252 | John Hancock |
| Intact Services USA LLCPlymouth, MN | 3 | 3,233 | Vanguard |
| Instant Brands Holdings, Inc.Rosemont, IL | 2 | 2,917 | John Hancock |
| Industrial Employers & Distributors AssociationEmeryville, CA | 1 | 2,883 | Ieda |
| Island Hospitality Management, LLCWest Palm Beach, FL | 1 | 2,653 | Principal |
| Iap World Services, Inc.Cape Canaveral, FL | 1 | 2,378 | Fidelity |
| Innovative Employee Solutions, Inc.San Diego, CA | 1 | 2,205 | Empower |
| Itg Cigars, Inc.Greensboro, NC | 4 | 1,466 | Fidelity |
| Invo Peo, Inc.Oak Ridge, TN | 1 | 1,447 | Transamerica |
| Iconectiv, LLCBridgewater, NJ | 3 | 603 | Vanguard |
| Intermec, Inc. C/O Honeywell International Inc.Charlotte, NC | 4 | 597 | n/a |
| Innovative Staff SolutionsMatoon, IL | 1 | 158 | n/a |
| Iasis Healthcare CorporationDallas, TX. No active plan; last report 2019 | 1 | 27,888 | n/a |
| Ieh Auto Parts LLCKennesaw, GA. No active plan; last report 2025 | 1 | 26,595 | n/a |
| ITT Educational Services, Inc.Indianapolis, IN. No active plan; last report 2019 | 2 | 16,977 | n/a |
| Inventiv Health IncSomerset, NJ. No active plan; last report 2017 | 1 | 15,927 | n/a |
| Interstate Brands CorporationKansas City, MO. No active plan; last report 2014 | 7 | 13,938 | n/a |
| Ihs Inc.Englewood, CO. No active plan; last report 2022 | 2 | 11,753 | n/a |
| Ilg, LLCMiami, FL. No active plan; last report 2019 | 2 | 11,678 | n/a |
| Indiana Ufcw Unions and Retail Food Employers Pension PlanIndianapolis, IN. No active plan; last report 2011 | 1 | 11,322 | n/a |
| Indiana University Health Ball Memorial Hospital, Inc.Muncie, IN. No active plan; last report 2018 | 4 | 11,171 | n/a |
| Invensys IncFoxboro, MA. No active plan; last report 2014 | 3 | 10,294 | n/a |
| Isolved Peo, LLCCharlotte, NC. No active plan; last report 2024 | 1 | 8,078 | n/a |
| Interactions Consumer Experience Marketing Inc.San Diego, CA. No active plan; last report 2015 | 1 | 7,726 | n/a |
| Indiana Carpenters Pension FundTroy, MI. No active plan; last report 2023 | 2 | 7,583 | n/a |
| Iu Health Care Associates Inc.Indianapolis, IN. No active plan; last report 2021 | 1 | 6,918 | n/a |
| ITT CorporationWhite Plains, NY. No active plan; last report 2014 | 19 | 6,759 | n/a |
| Indymac Bank, F.S.B.Dallas, TX. No active plan; last report 2009 | 2 | 6,582 | n/a |
| Infor Global Solutions Michigan, Inc.Alpharetta, GA. No active plan; last report 2011 | 1 | 5,995 | n/a |
| Ipc International CorporationBannockburn, IL. No active plan; last report 2014 | 2 | 5,546 | n/a |
| Indiana University Health Bloomington HospitalBloomington, IN. No active plan; last report 2018 | 2 | 5,541 | n/a |
| IBEW Local 716 Pension PlanHouston, TX. No active plan; last report 2022 | 1 | 5,292 | n/a |
| Iesi CorporationFort Worth, TX. No active plan; last report 2017 | 1 | 5,169 | n/a |