401(k) · DOL Form 5500 · 2024
Ameren Corporation 401(k) Plan
Data updated 2026-08-25
- $3.2B
- Total assets Very large vs avg
- 9,504
- Participants Very large workforce
- 100th
- Percentile by assets National rank
- $337,693
- Avg per participant High balance/head
Official DOL plan name: Ameren Corporation Savings Investment Plan · Sponsored by Ameren Corporation · Missouri · Utilities
$3.2B in assets, 9,504 participants
Ameren Corporation's Ameren Corporation Savings Investment Plan reported $3.2B in total assets and 9,504 participants in its 2024 DOL Form 5500 filing, ranking in the 100th 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.
- #700 in Utilities (732 peers)
Coverage in Missouri
Ameren Corporation Savings Investment Plan covers 9,504 participants in Missouri, 13x the typical Missouri plan (state average ~737 per filing). Assets: $3.2B.
- #700
- in Utilities (732 peers)
- +8.0%
- assets growth YoY
- 32×
- vs typical plan assets (national mean)
Ameren Corporation Savings Investment Plan's outsized position by total assets
Ameren Corporation Savings Investment Plan vs every filed plan by assets
End-of-year total assets · plan year 2024 · DOL Form 5500
$3,209,433,257 Highest reported value at or above every one 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
Ameren Corporation Savings Investment 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. Ameren Corporation Savings Investment Plan lands in the large band (9,504 participants).
What changed between DOL Form 5500 filings
plan year 2023 → plan year 2024
- Ameren Corporation Savings Investment Plan end-of-year assets rose from $3.0B in the plan year 2023 filing to $3.2B in the plan year 2024 filing.
- Ameren Corporation Savings Investment Plan reported participants rose from 9,356 in the plan year 2023 filing to 9,504 in the plan year 2024 filing.
- Ameren Corporation Savings Investment Plan reported net income rose from $236M in the plan year 2023 filing to $238M in the plan year 2024 filing.
Plan-year Form 5500 strip
Filing strip 431723446 · Ameren Corporation PY 2024 · 401(k)
Ameren Corporation Savings Investment Plan · $3.2B · 9,504 · 100th
- TYPE $3.2B
- TYPE 9,504
- TYPE 100th
- TYPE 401(k)
- TYPE near Discover Financial Services 401(k) Plan
- TYPE ind #700
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 Utilities retirement plans → · Plans in Missouri →
Ameren Corporation Savings Investment Plan in the asset neighbourhood
Missouri filing particulars
| Total Assets (Beginning of Year) | $3.0B |
|---|---|
| Net Assets (End of Year) | $3.2B |
| Net Income | $238M |
| Employer EIN | 431723446 |
| Plan Effective Date | 1984-07-01 |
| Filing Status | FILING RECEIVED |
Sponsor Plan History (Ameren Corporation)
Sponsor-wide plan assets over time
All Ameren Corporation plans reported in each filing year
- Latest sponsor-wide plan assets
- $8.0B 18.962225529961195% vs 2022
- 2024 filing year
| Year | Plans | Participants | Total Assets |
|---|---|---|---|
| 2022 | 3 | 28,238 | $9.9B |
| 2023 | 2 | 19,512 | $7.7B |
| 2024 | 2 | 19,264 | $8.0B |
Nearby 401(k) Plans in Missouri
Peer 401(k) plans, same state, same plan type, ranked by total assets.
- Edward D. Jones & Co. Profit Sharing and 401(k) Plan $12.4B · 47,254
- Bayer Corporation Savings and Retirement Plan $10.8B · 19,357
- Emerson Savings Plan $7.4B · 8,315
- Enterprise Holdings Retirement Savings Plan $6.5B · 72,024
- Centene Management Corporation Retirement Plan $4.7B · 53,760
Scale composition for Ameren Corporation Savings Investment Plan
Ameren Corporation Savings Investment Plan reports $3.2B in end-of-year assets across 9,504 participants (0.026% of the $12.3T held by all Form 5500 filers in the national rollup , and 0.010% of 93,925,755 covered participants) - about $337,693 per participant (2.4x the national average assets-per-participant) . Net income for plan year 2024 was $238M.
This plan identity (EIN 431723446, plan #003) has 4 Form 5500 filings on file from 2022 to 2024 , with end-of-year assets moving from $2.7B to $3.2B (+17.5%) while covered participants moved from 9,307 to 9,504 . Single-year sparse filers cannot show that trail.
| Plan year | Participants | EOY assets | Filing |
|---|---|---|---|
| 2022 | 9,307 | $2.7B | Open filing |
| 2022 | 8,851 | $2.7B | Open filing |
| 2023 | 9,356 | $3.0B | Open filing |
| 2024 · index core | 9,504 | $3.2B | This page |
The same sponsor also keeps 1 other index-core plan on PlainRetire:
- Ameren Retirement Plan (Defined Benefit (Pension), $4.8B, 9,760 participants)
Ameren Corporation Savings Investment Plan's out-of-state 401(k) peers by assets and headcount
Outside Missouri, the nearest 401(k) by assets is Discover Financial Services 401(k) Plan in IL ($3.2B); by covered participants it is Employee Savings Plan in IL (9,506 participants). Same-state nearby plans are listed separately above.
Closest by plan assets
Nearest other-state filings by tot_assets_eoy ($3.2B here).
- Discover Financial Services 401(k) Plan (IL) $3.2B · 20,344
- Navy Federal 401(k) Savings Plan (VA) $3.2B · 24,276
- The Rite Aid 401(k) Plan (PA) $3.2B · 28,313
- Trader Joe's Company Retirement Plan (CA) $3.2B · 63,666
Similar participant headcount
Nearest other-state filings by covered participants (9,504 participants); asset peers above are excluded.
- Employee Savings Plan (IL) 9,506 · 2 off
- Beacon Mobility Transportation Employee Retirement Plan (OH) 9,496 · 8 off
- Installed Building Products, LLC 401(k) Savings Plan and Trust (OH) 9,515 · 11 off
- Gundersen Lutheran Employees' Retirement Plan (WI) 9,492 · 12 off
DOL Form 5500 plan year 2024. Asset totals can differ widely at the same headcount; neither axis is a quality rating.