Defined Benefit (Pension) · DOL Form 5500 · 2024
Massachusetts Mutual Life Insurance Company Pension Plan
Data updated 2026-08-25
- $2.5B
- Total assets Very large vs avg
- 13,404
- Participants Very large workforce
- 99th
- Percentile by assets National rank
- $186,861
- Avg per participant Above avg balance/head
Official DOL plan name: Massmutual Pension Plan · Sponsored by Massachusetts Mutual Life Insurance Company · Massachusetts · Finance & Insurance
$2.5B in assets, 13,404 participants
Massachusetts Mutual Life Insurance Company's Massmutual Pension Plan reported $2.5B in total assets and 13,404 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.
- #8,436 in Finance & Insurance (8,549 peers)
Coverage in Massachusetts
Massmutual Pension Plan covers 13,404 participants in Massachusetts, 20x the typical Massachusetts plan (state average ~659 per filing). Assets: $2.5B.
- #8,436
- in Finance & Insurance (8,549 peers)
- -3.3%
- assets change YoY
- 25×
- vs typical plan assets (national mean)
The plan reported a net loss of $53M for the year, a single-year figure driven by markets and benefit payments, not a measure of plan health.
Massmutual Pension Plan's outsized position by total assets
Massmutual Pension Plan vs every filed plan by assets
End-of-year total assets · plan year 2024 · DOL Form 5500
$2,504,685,872 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
Massmutual Pension Plan's mega-plan peer group by participant headcount
Plan-year 2024 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Massmutual Pension Plan is a mega filing (13,404 participants), the rightmost band on the breakdown.
What changed between DOL Form 5500 filings
plan year 2023 → plan year 2024
- Massmutual Pension Plan reported net income fell from $13M in the plan year 2023 filing to -$53M in the plan year 2024 filing.
- Massmutual Pension Plan reported participants fell from 14,462 in the plan year 2023 filing to 13,404 in the plan year 2024 filing.
- Massmutual Pension Plan end-of-year assets fell from $2.6B in the plan year 2023 filing to $2.5B in the plan year 2024 filing.
Form 5500 schedule snapshot
Filing strip 041590850 · Massachusetts Mutual Life Insurance Company PY 2024 · Defined Benefit (Pension)
Massmutual Pension Plan · $2.5B · 13,404 · 99th
- VS-ST $2.5B
- BOY 13,404
- SCH 99th
- EBSA Defined Benefit (Pension)
- PART near Newyork-Presbyterian Pension Plan
- TYPE ind #8436
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 Finance & Insurance retirement plans → · Plans in Massachusetts →
Massmutual Pension Plan in the asset neighbourhood
Massachusetts filing particulars
| Total Assets (Beginning of Year) | $2.6B |
|---|---|
| Net Assets (End of Year) | $2.4B |
| Net Income | -$53M |
| Employer EIN | 041590850 |
| Plan Effective Date | 1948-01-01 |
| Filing Status | FILING RECEIVED |
Sponsor Plan History (Massachusetts Mutual Life Insurance Company)
Sponsor-wide plan assets over time
All Massachusetts Mutual Life Insurance Company plans reported in each filing year
- Latest sponsor-wide plan assets
- $7.0B 12.184255137909904% vs 2022
- 2024 filing year
| Year | Plans | Participants | Total Assets |
|---|---|---|---|
| 2022 | 4 | 30,601 | $6.2B |
| 2023 | 4 | 29,481 | $6.7B |
| 2024 | 4 | 27,323 | $7.0B |
Nearby Defined Benefit (Pension) Plans in Massachusetts
Peer Defined Benefit (Pension) plans, same state, same plan type, ranked by total assets.
- Consolidated Cash Balance Program of Mass General Brigham and Member Organizations $11.6B · 60,621
- New England Teamsters Pension Fund $9.1B · 21,577
- Liberty Mutual Retirement Benefit Plan $6.3B · 34,910
- Massachusetts Institute of Technology Basic Retirement Plan $5.9B · 12,533
- N. Atlantic States Carp. Pension Fund $5.1B · 16,946
Scale composition for Massmutual Pension Plan
Massmutual Pension Plan reports $2.5B in end-of-year assets across 13,404 participants (0.020% of the $12.3T held by all Form 5500 filers in the national rollup , and 0.014% of 93,925,755 covered participants) - about $186,861 per participant (1.4x the national average assets-per-participant) . Net income for plan year 2024 was -$53M.
This plan identity (EIN 041590850, plan #001) has 3 Form 5500 filings on file from 2022 to 2024 , with end-of-year assets moving from $2.5B to $2.5B (-1.0%) while covered participants moved from 14,729 to 13,404 . Single-year sparse filers cannot show that trail.
| Plan year | Participants | EOY assets | Filing |
|---|---|---|---|
| 2022 | 14,729 | $2.5B | Open filing |
| 2023 | 14,462 | $2.6B | Open filing |
| 2024 · index core | 13,404 | $2.5B | This page |
The same sponsor also keeps 2 other index-core plans on PlainRetire:
- Massmutual Thrift Plan (401(k), $4.3B, 13,502 participants)
- Massachusetts Mutual Life Insurance Company Agent Pension Plan (Money Purchase, $145M, 351 participants)
Massmutual Pension Plan's out-of-state Defined Benefit (Pension) peers by assets and headcount
Outside Massachusetts, the nearest Defined Benefit (Pension) by assets is Newyork-Presbyterian Pension Plan in NY ($2.5B); by covered participants it is The Retirement Benefit Plan of American Airlines, Inc. for Employees Represented by the Transport Workers Union of America, AFL-CIO in TX (13,402 participants). Same-state nearby plans are listed separately above.
Closest by plan assets
Nearest other-state filings by tot_assets_eoy ($2.5B here).
- Newyork-Presbyterian Pension Plan (NY) $2.5B · 18,881
- Retirement&security Program for Employees of Ntca and Its Members (VA) $2.5B · 9,988
- Directors Guild of America-Producer Pension Plan Basic Benefit Plan (CA) $2.5B · 7,530
- Sysco Corporation Retirement Plan (TX) $2.5B · 9,955
Similar participant headcount
Nearest other-state filings by covered participants (13,404 participants); asset peers above are excluded.
- The Retirement Benefit Plan of American Airlines, Inc. for Employees Represented by the Transport Workers Union of America, AFL-CIO (TX) 13,402 · 2 off
- Sharpsaver Retirement Plan (CA) 13,524 · 120 off
- Texas Children's Hospital Cash Balance Pension Plan (TX) 13,281 · 123 off
- Metlife Retirement Plan (NJ) 13,263 · 141 off
DOL Form 5500 plan year 2024. Asset totals can differ widely at the same headcount; neither axis is a quality rating.