Other · DOL Form 5500 · 2022
Uchicago Argonne, LLC Argonne National Laboratory Retirement Plan
Data updated 2026-08-25
- $1.4B
- Total assets Very large vs avg
- 3,664
- Participants Above avg headcount
- 99th
- Percentile by assets National rank
- $389,993
- 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
$1.4B in assets, 3,664 participants
Uchicago Argonne, LLC Argonne National Laboratory's Argonne National Laboratory 403(b) Employee Retirement Plan reported $1.4B in total assets and 3,664 participants in its 2022 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.
- #21,456 in Professional & Technical Services (21,562 peers)
Coverage in Illinois
Argonne National Laboratory 403(b) Employee Retirement Plan covers 3,664 participants in Illinois, 4.7x the typical Illinois plan (state average ~779 per filing). Assets: $1.4B.
- #21,456
- in Professional & Technical Services (21,562 peers)
- -14.9%
- assets change YoY
- 14×
- vs typical plan assets (national mean)
The plan reported a net loss of $250M for the year, a single-year figure driven by markets and benefit payments, not a measure of plan health.
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 2022 · DOL Form 5500
$1,428,935,478 Top 1% higher than 99% of 139,123 filed plans
Dashed line + filled bar = this entry, among filed plans.
Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2022
Argonne National Laboratory 403(b) Employee Retirement Plan's large-plan peer group by participant headcount
Plan-year 2022 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 (3,664 participants).
EBSA filing schedule strip
Filing strip 680628477 · Uchicago Argonne, LLC Argonne National Laboratory PY 2022 · Other
Argonne National Laboratory 403(b) Employee Retirement Plan · $1.4B · 3,664 · 99th
- IND $1.4B
- EOY 3,664
- 5500 99th
- ASSETS Other
- PCT near Legacy Health 403(b) Plan
- EIN ind #21456
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) | $1.7B |
|---|---|
| Net Assets (End of Year) | $1.4B |
| Net Income | -$250M |
| 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.
- Washington University Retirement Savings Plan $5.9B · 15,925
- Northwestern University Retirement Plan $3.5B · 9,465
- The University of Chicago Contributory Retirement Plan $3.1B · 4,552
- Northshore University Healthsystem Tax Deferred Annuity Plan $1.8B · 13,159
- The University of Chicago Supplemental Retirement Plan $1.5B · 7,855
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 Legacy Health 403(b) Plan in OR ($1.4B); by covered participants it is Lowell General Hospital Corp. Inc. 403(b) Retirement (Formerly Lgh Fidelity 403(b) Retirement Savings Plan in MA (3,653 participants). Same-state nearby plans are listed separately above.
Closest by plan assets
Nearest other-state filings by tot_assets_eoy ($1.4B here).
- Legacy Health 403(b) Plan (OR) $1.4B · 13,568
- Children's Hospital Medical Center Employee Savings Plan (OH) $1.4B · 12,987
- Drexel University Defined Contribution Retirement Plan (PA) $1.4B · 4,157
- Mclaren Employees' 403(b) Retirement Plan (MI) $1.4B · 21,255
Similar participant headcount
Nearest other-state filings by covered participants (3,664 participants); asset peers above are excluded.
- Lowell General Hospital Corp. Inc. 403(b) Retirement (Formerly Lgh Fidelity 403(b) Retirement Savings Plan (MA) 3,653 · 11 off
- Huntington Memorial Hospital Savings Plan (CA) 3,653 · 11 off
- Loma Linda University Faculty Medical Group Tsa Plan (CA) 3,649 · 15 off
- Au Medical Center, Inc. 403(b) Retirement Sav Plan (GA) 3,641 · 23 off
DOL Form 5500 plan year 2022. Asset totals can differ widely at the same headcount; neither axis is a quality rating.