Other · DOL Form 5500 · 2024
Uchicago Argonne, LLC Argonne National Laboratory Retirement Plan
Data updated 2026-08-25
- $1.0B
- Total assets Very large vs avg
- 3,262
- Participants Above avg headcount
- 98th
- Percentile by assets National rank
- $313,818
- Avg per participant High balance/head
Official DOL plan name: Argonne National Laboratory 401(a) Retirement Plan · Sponsored by Uchicago Argonne, LLC Argonne National Laboratory · Illinois · Professional & Technical Services
$1.0B in assets, 3,262 participants
Uchicago Argonne, LLC Argonne National Laboratory's Argonne National Laboratory 401(a) Retirement Plan reported $1.0B in total assets and 3,262 participants in its 2024 DOL Form 5500 filing, ranking in the 98th percentile by assets among filed plans. Figures are as reported by the plan sponsor to the Department of Labor, not audited or endorsed by PlainRetire.
- #19,963 in Professional & Technical Services (20,173 peers)
Coverage in Illinois
Argonne National Laboratory 401(a) Retirement Plan covers 3,262 participants in Illinois, 4.2x the typical Illinois plan (state average ~779 per filing). Assets: $1.0B.
- #19,963
- in Professional & Technical Services (20,173 peers)
- +8.6%
- assets growth YoY
- 10×
- vs typical plan assets (national mean)
Argonne National Laboratory 401(a) Retirement Plan's outsized position by total assets
Argonne National Laboratory 401(a) Retirement Plan vs every filed plan by assets
End-of-year total assets · plan year 2024 · DOL Form 5500
$1,023,674,196 Top 2% higher than 98% of 123,620 filed plans
Dashed line + filled bar = this entry, among filed plans.
Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2024
Argonne National Laboratory 401(a) Retirement Plan's large-plan peer group by participant headcount
Plan-year 2024 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Argonne National Laboratory 401(a) Retirement Plan lands in the large band (3,262 participants).
What changed between DOL Form 5500 filings
plan year 2023 → plan year 2024
- Argonne National Laboratory 401(a) Retirement Plan reported net income fell from $119M in the plan year 2023 filing to $81M in the plan year 2024 filing.
- Argonne National Laboratory 401(a) Retirement Plan end-of-year assets rose from $942M in the plan year 2023 filing to $1.0B in the plan year 2024 filing.
- Argonne National Laboratory 401(a) Retirement Plan reported participants rose from 3,096 in the plan year 2023 filing to 3,262 in the plan year 2024 filing.
Form 5500 schedule snapshot
Filing strip 680628477 · Uchicago Argonne, LLC Argonne National Laboratory PY 2024 · Other
Argonne National Laboratory 401(a) Retirement Plan · $1.0B · 3,262 · 98th
- PART $1.0B
- TYPE 3,262
- NET 98th
- BOOK Other
- VS-ST near The Research Foundation for the State University of New York Optional Retirement Plan
- BOY ind #19963
Stamps derive from this plan's Form 5500 line items (assets, participants, type, EIN, cohort placement) - not a quality rating of the sponsor. Read with Professional & Technical Services retirement plans → · Plans in Illinois →
Argonne National Laboratory 401(a) Retirement Plan in the asset neighbourhood
Illinois filing particulars
| Total Assets (Beginning of Year) | $942M |
|---|---|
| Net Assets (End of Year) | $1.0B |
| Net Income | $81M |
| Employer EIN | 680628477 |
| Plan Effective Date | 1994-01-01 |
| Filing Status | FILING RECEIVED |
Sponsor Plan History (Uchicago Argonne, LLC Argonne National Laboratory)
Sponsor-wide plan assets over time
All Uchicago Argonne, LLC Argonne National Laboratory plans reported in each filing year
- Latest sponsor-wide plan assets
- $2.7B 19.697212020907916% vs 2022
- 2024 filing year
| Year | Plans | Participants | Total Assets |
|---|---|---|---|
| 2022 | 2 | 6,722 | $2.3B |
| 2023 | 2 | 6,894 | $2.5B |
| 2024 | 2 | 7,243 | $2.7B |
Nearby Other Plans in Illinois
Peer Other plans, same state, same plan type, ranked by total assets.
- Northwestern University Retirement Plan $4.4B · 9,328
- The University of Chicago Contributory Retirement Plan $3.8B · 5,144
- Endeavor Health Legacy 403(b) Tax Deferred Annuity Plan for Northshore University Healthsystem Employees $2.1B · 13,718
- The University of Chicago Supplemental Retirement Plan $1.9B · 8,635
- Rush University Medical Center 403(b) Retirement Savings Plan $1.8B · 13,592
Argonne National Laboratory 401(a) Retirement Plan's out-of-state Other peers by assets and headcount
Outside Illinois, the nearest Other by assets is The Research Foundation for the State University of New York Optional Retirement Plan in NY ($1.0B); by covered participants it is Blanchard Valley Health System 403(b) Plan in OH (3,252 participants). Same-state nearby plans are listed separately above.
Closest by plan assets
Nearest other-state filings by tot_assets_eoy ($1.0B here).
- The Research Foundation for the State University of New York Optional Retirement Plan (NY) $1.0B · 4,290
- Maimonides Medical Center Tax Deferred Retirement Plan (NY) $1.0B · 8,258
- Children's Hospital Colorado 403(b) Plan (CO) $1.0B · 9,224
- Children's Hospital and Health System Shared Retirement Savings Plan (WI) $1.0B · 6,717
Similar participant headcount
Nearest other-state filings by covered participants (3,262 participants); asset peers above are excluded.
- Blanchard Valley Health System 403(b) Plan (OH) 3,252 · 10 off
- San Diego State University Foundation Defined Contribution Retirement Plan (CA) 3,273 · 11 off
- Tulane University Faculty and Administrative 403(b) Retirement Plan (LA) 3,284 · 22 off
- University of Michigan Health - West 403(b) Retirement Savings Plan (MI) 3,285 · 23 off
DOL Form 5500 plan year 2024. Asset totals can differ widely at the same headcount; neither axis is a quality rating.