Other · DOL Form 5500 · 2024
Uchicago Argonne, LLC Argonne National Laboratory Retirement Plan
Data updated 2026-08-25
- $1.7B
- Total assets Very large vs avg
- 3,981
- Participants Above avg headcount
- 99th
- Percentile by assets National rank
- $420,195
- Avg per participant High balance/head
Official DOL plan name: Argonne National Laboratory 403(b) Employee Retirement Plan · Sponsored by Uchicago Argonne, LLC Argonne National Laboratory · Illinois · Professional & Technical Services
$1.7B in assets, 3,981 participants
Uchicago Argonne, LLC Argonne National Laboratory's Argonne National Laboratory 403(b) Employee Retirement Plan reported $1.7B in total assets and 3,981 participants in its 2024 DOL Form 5500 filing, ranking in the 99th 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.
- #20,052 in Professional & Technical Services (20,173 peers)
Coverage in Illinois
Argonne National Laboratory 403(b) Employee Retirement Plan covers 3,981 participants in Illinois, 5.1x the typical Illinois plan (state average ~779 per filing). Assets: $1.7B.
- #20,052
- in Professional & Technical Services (20,173 peers)
- +6.1%
- assets growth YoY
- 17×
- vs typical plan assets (national mean)
Argonne National Laboratory 403(b) Employee Retirement Plan's outsized position by total assets
Argonne National Laboratory 403(b) Employee Retirement Plan vs every filed plan by assets
End-of-year total assets · plan year 2024 · DOL Form 5500
$1,672,798,265 Top 1% higher than 99% 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 403(b) Employee 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 403(b) Employee Retirement Plan lands in the large band (3,981 participants).
What changed between DOL Form 5500 filings
plan year 2023 → plan year 2024
- Argonne National Laboratory 403(b) Employee Retirement Plan reported net income fell from $148M in the plan year 2023 filing to $96M in the plan year 2024 filing.
- Argonne National Laboratory 403(b) Employee Retirement Plan end-of-year assets rose from $1.6B in the plan year 2023 filing to $1.7B in the plan year 2024 filing.
- Argonne National Laboratory 403(b) Employee Retirement Plan reported participants rose from 3,798 in the plan year 2023 filing to 3,981 in the plan year 2024 filing.
EBSA filing schedule strip
Filing strip 680628477 · Uchicago Argonne, LLC Argonne National Laboratory PY 2024 · Other
Argonne National Laboratory 403(b) Employee Retirement Plan · $1.7B · 3,981 · 99th
- EIN $1.7B
- RANK 3,981
- PHOTO 99th
- IND Other
- EOY near Johns Hopkins Health System Corporation 403(b) Plan
- 5500 ind #20052
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 403(b) Employee Retirement Plan in the asset neighbourhood
Illinois filing particulars
| Total Assets (Beginning of Year) | $1.6B |
|---|---|
| Net Assets (End of Year) | $1.7B |
| Net Income | $96M |
| Employer EIN | 680628477 |
| Plan Effective Date | 1974-01-01 |
| 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 403(b) Employee Retirement Plan's out-of-state Other peers by assets and headcount
Outside Illinois, the nearest Other by assets is Johns Hopkins Health System Corporation 403(b) Plan in MD ($1.7B); by covered participants it is Cassia 403(b) Retirement Plan in MN (3,983 participants). Same-state nearby plans are listed separately above.
Closest by plan assets
Nearest other-state filings by tot_assets_eoy ($1.7B here).
- Johns Hopkins Health System Corporation 403(b) Plan (MD) $1.7B · 18,810
- Fordham University Retirement Plan (NY) $1.7B · 3,437
- Dartmouth Health 403(b) Plan (NH) $1.7B · 13,150
- The George Washington University Supplemental Retirement Plan (VA) $1.6B · 8,262
Similar participant headcount
Nearest other-state filings by covered participants (3,981 participants); asset peers above are excluded.
- Cassia 403(b) Retirement Plan (MN) 3,983 · 2 off
- Embry-Riddle Aeronautical University Defined Contribution Retirement Plan (FL) 3,975 · 6 off
- Sacred Heart University Defined Contribution Plan (CT) 3,975 · 6 off
- Med Center Health 403(b) Plan (KY) 3,995 · 14 off
DOL Form 5500 plan year 2024. Asset totals can differ widely at the same headcount; neither axis is a quality rating.