Other · DOL Form 5500 · 2023
Uchicago Argonne, LLC Argonne National Laboratory Retirement Plan
Data updated 2026-08-25
- $1.6B
- Total assets Very large vs avg
- 3,798
- Participants Above avg headcount
- 99th
- Percentile by assets National rank
- $415,239
- 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
$1.6B in assets, 3,798 participants
Uchicago Argonne, LLC Argonne National Laboratory's Argonne National Laboratory 403(b) Employee Retirement Plan reported $1.6B in total assets and 3,798 participants in its 2023 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.
- #20,211 in Professional & Technical Services (20,321 peers)
Coverage in Illinois
Argonne National Laboratory 403(b) Employee Retirement Plan covers 3,798 participants in Illinois, 4.9x the typical Illinois plan (state average ~779 per filing). Assets: $1.6B.
- #20,211
- in Professional & Technical Services (20,321 peers)
- +10.4%
- assets growth YoY
- 16×
- 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 2023 · DOL Form 5500
$1,577,078,821 Top 1% higher than 99% of 127,068 filed plans
Dashed line + filled bar = this entry, among filed plans.
Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2023
Argonne National Laboratory 403(b) Employee Retirement Plan's large-plan peer group by participant headcount
Plan-year 2023 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 (3,798 participants).
What changed between DOL Form 5500 filings
plan year 2022 → plan year 2023
- Argonne National Laboratory 403(b) Employee Retirement Plan reported net income rose from -$250M in the plan year 2022 filing to $148M in the plan year 2023 filing.
- Argonne National Laboratory 403(b) Employee Retirement Plan end-of-year assets rose from $1.4B in the plan year 2022 filing to $1.6B in the plan year 2023 filing.
- Argonne National Laboratory 403(b) Employee Retirement Plan reported participants rose from 3,664 in the plan year 2022 filing to 3,798 in the plan year 2023 filing.
Published 5500 schedule card
Filing strip 680628477 · Uchicago Argonne, LLC Argonne National Laboratory PY 2023 · Other
Argonne National Laboratory 403(b) Employee Retirement Plan · $1.6B · 3,798 · 99th
- PART $1.6B
- PART 3,798
- PART 99th
- PART Other
- PART near Boston University Supplemental Retirement and Savings Plan
- PART ind #20211
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) | $1.4B |
|---|---|
| Net Assets (End of Year) | $1.6B |
| Net Income | $148M |
| 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 $4.0B · 9,440
- The University of Chicago Contributory Retirement Plan $3.5B · 4,796
- Endeavor Health Legacy 403(b) Tax Deferred Annuity Plan for Northshore University Healthsystem Employees $2.0B · 13,705
- The University of Chicago Supplemental Retirement Plan $1.7B · 8,254
- Rush University Medical Center 403(b) Retirement Savings Plan $1.5B · 12,975
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 Boston University Supplemental Retirement and Savings Plan in MA ($1.6B); by covered participants it is Loma Linda University Faculty Medical Group Tsa Plan in CA (3,806 participants). Same-state nearby plans are listed separately above.
Closest by plan assets
Nearest other-state filings by tot_assets_eoy ($1.6B here).
- Boston University Supplemental Retirement and Savings Plan (MA) $1.6B · 12,651
- Syracuse University Noncontributory Retirement Plan (NY) $1.6B · 4,967
- Orlando Health Retirement Savings Plan 403b (FL) $1.6B · 26,087
- Southwest Research Institute Retirement Plan (TX) $1.5B · 2,831
Similar participant headcount
Nearest other-state filings by covered participants (3,798 participants); asset peers above are excluded.
- Loma Linda University Faculty Medical Group Tsa Plan (CA) 3,806 · 8 off
- Commonwealth Health Corporation 403(b) Plan (KY) 3,789 · 9 off
- Owensboro Health 403(b) Safe Harbor Plan (KY) 3,768 · 30 off
- Pomona Valley Hospital Medical Center Retirement Savings Plan (CA) 3,859 · 61 off
DOL Form 5500 plan year 2023. Asset totals can differ widely at the same headcount; neither axis is a quality rating.