401(k) · DOL Form 5500 · 2022
Ameren Corporation 401(k) Plan
Data updated 2026-08-06
- $2.7B
- Total assets
- 9,307
- Participants
- 100th
- Percentile by assets
- $293,433
- Avg per participant
Official DOL plan name: Ameren Corporation Savings Investment Plan · Sponsored by Ameren Corporation · Missouri · Utilities
$2.7B in assets, 9,307 participants
Ameren Corporation's Ameren Corporation Savings Investment Plan reported $2.7B in total assets and 9,307 participants in its 2022 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.
- 100th percentile by assets (of 139,258 plans)
- #705 in Utilities (739 peers)
Coverage in Missouri
Ameren Corporation Savings Investment Plan covers 9,307 participants in Missouri, 12x the typical Missouri plan (state average ~756 per filing). Assets: $2.7B.
- $2.7B
- total plan assets (2022 EOY)
- 9,307
- covered participants
- 100th
- percentile by assets (of 139,258 plans)
- $293,433
- avg assets per participant
The plan reported a net loss of $586M for the year, a single-year figure driven by markets and benefit payments, not a measure of plan health.
Participants vs Missouri filers
In Missouri, the average filing covers about 756 participants across 2,155 plans. Ameren Corporation Savings Investment Plan reports 9,307 participants - 12x that state average ($2.7B EOY assets).
Missouri filing particulars
| Total Assets (Beginning of Year) | $3.3B |
|---|---|
| Net Assets (End of Year) | $2.7B |
| Net Income | -$586M |
| Employer EIN | 431723446 |
| Plan Effective Date | 1984-07-01 |
| Filing Status | FILING RECEIVED |
Sponsor Plan History (Ameren Corporation)
| 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.
Ameren Corporation Savings Investment Plan vs. nearby 401(k) plans in Missouri, assets vs. participants
- Bayer Corporation Savings and Retirement Plan $9.2B · 18,917
- Edward D. Jones & Co. Profit Sharing and 401(k) Plan $8.7B · 47,923
- Enterprise Holdings Retirement Savings Plan $4.5B · 59,568
- Centene Management Corporation Retirement Plan $3.2B · 49,060
- Anheuser-Busch 401(k) Savings and Retirement Plan $3.1B · 14,556
Scale composition for Ameren Corporation Savings Investment Plan
Ameren Corporation Savings Investment Plan reports $2.7B in end-of-year assets across 9,307 participants (0.023% of the $11.6T held by all Form 5500 filers in the national rollup , and 0.010% of 89,805,449 covered participants) - about $293,433 per participant (2.1x the national average assets-per-participant) . Net income for plan year 2022 was -$586M.
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 | This page |
| 2022 | 8,851 | $2.7B | Open filing |
| 2023 | 9,356 | $3.0B | Open filing |
| 2024 · index core | 9,504 | $3.2B | Open filing |
The same sponsor also keeps 2 other index-core plans on PlainRetire:
- Ameren Retirement Plan (Defined Benefit (Pension), $4.8B, 9,760 participants)
- Ameren Corporation Savings Investment Plan (401(k), $3.2B, 9,504 participants)
Similar-Sized 401(k) Plans Nationally
401(k) plans in other states closest to Ameren Corporation Savings Investment Plan by total assets, not by location.
- Swagelok Retirement Savings Plan (OH) $2.7B · 4,564
- Whirlpool 401(k) Retirement Plan (MI) $2.7B · 20,774
- Ilwu-Pma Savings (401(k)) Plan (CA) $2.8B · 16,930
- Davita Retirement Savings Plan (CO) $2.8B · 57,172
Frequently Asked Questions
How did Ameren Corporation Savings Investment Plan assets move in 2022? ▼
How have Ameren Corporation plan assets changed over time? ▼
Where does Ameren Corporation Savings Investment Plan rank by assets among Form 5500 filers? ▼
Which 401(k) plans are similar in size to Ameren Corporation Savings Investment Plan? ▼
Next read for Ameren Corporation Savings Investment Pl…
Filing takeaways
Ways to act on Ameren Corporation Savings Investment Plan's numbers.
- By total assets, Ameren Corporation Savings Investment Plan ranks among the largest 1% of all filed plans. See the largest plans
- Compare it side-by-side against 3 similar 401(k) plans in Missouri. Compare plans
- Ameren Corporation's sponsor-wide assets have declined 19.0% since 2022 across 3 plan years on file. More Utilities plans