Based on U.S. Department of Labor Form 5500 filings (plan years 2022–2024), 1,744 U.S. retirement plans report holding Vanguard: Mid Cap Index Adm in their Schedule of Assets, totaling $1.1B in parsed positions. Matched on the normalized security name across each plan’s latest filing and ranked by position size.
| # | Sponsor / Plan | Location | Participants | Plan assets (EOY) | Position |
|---|---|---|---|---|---|
| 1 | CHILDRENS HOSPITAL PEDIATRIC ASSOCIATES, INC. CHILDREN'S HOSPITAL PEDIATRIC ASSOCIATES, INC. 401K PROFIT SHARING PLAN | BOSTON MA | 581 | $490.4M | $33.0M |
| 2 | BOARD OF TRUSTEES, U.A. UNION LOCAL NO. 290 PLUMBER, UNITED ASSOCIATION UNION LOCAL NO. 290 PLUMBER, STEAMFITTER AND SHIPFITTER INDUSTRY 401(K) PLAN | TUALATIN OR | 3,088 | $235.6M | $18.1M |
| 3 |
INDIANAPOLIS IN |
| 2,325 |
| $556.8M |
| $14.0M |
| 4 | CHILDRENS HOSPITAL PEDIATRIC ASSOCIATES, INC. CHILDREN'S HOSPITAL PEDIATRIC ASSOCIATES, INC. DEFINED CONTRIBUTION RETIREMENT PLAN | BOSTON MA | 581 | $139.1M | $10.8M |
| 5 | TRUSTEES OF ST. PAUL ELECTRICAL CONSTRUCTION WORKERS 401(K) PLAN ST. PAUL ELECTRICAL CONSTRUCTION WORKERS 401(K) PLAN | ST. PAUL MN | 1,408 | $204.0M | $10.7M |
| 6 | AEROVIRONMENT, INC. AEROVIRONMENT, INC. P/S AND SALARY DEFERRAL 401 K PLAN | SIMI VALLEY CA | 1,297 | $259.8M | $10.4M |
| 7 | DIGITAL FEDERAL CREDIT UNION DIGITAL FEDERAL CREDIT UNION 401(K) RETIREMENT PLAN | MARLBOROUGH MA | 1,737 | $221.3M | $10.4M |
| 8 | MODERN FORGE SERVICES, LLC MODERN FORGE COMPANIES EMPLOYEE RETIREMENT BENEFIT PLAN | BLUE ISLAND IL | 485 | $69.1M | $9.7M |
| 9 | SMITHGROUP COMPANIES, INC. THE SMITHGROUP RETIREMENT ACCUMULATION PLAN | DETROIT MI | 1,547 | $335.3M | $9.7M |
| 10 | AMERICAN ACADEMY OF OPHTHALMOLOGY AMERICAN ACADEMY OF OPHTHALMOLOGY, INC. 401(K) PLAN | SAN FRANCISCO CA | 196 | $107.0M | $9.0M |
