Defined Benefit (Pension) · DOL Form 5500 · 2023
Liberty Mutual Group Inc. Pension Plan
Data updated 2026-08-25
- $6.9B
- Total assets Very large vs avg
- 37,145
- Participants Very large workforce
- 100th
- Percentile by assets National rank
- $185,550
- Avg per participant Above avg balance/head
Official DOL plan name: Liberty Mutual Retirement Benefit Plan · Sponsored by Liberty Mutual Group Inc. · Massachusetts · Finance & Insurance
$6.9B in assets, 37,145 participants
Liberty Mutual Group Inc.'s Liberty Mutual Retirement Benefit Plan reported $6.9B in total assets and 37,145 participants in its 2023 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.
- #8,835 in Finance & Insurance (8,869 peers)
Coverage in Massachusetts
Liberty Mutual Retirement Benefit Plan covers 37,145 participants in Massachusetts, 56x the typical Massachusetts plan (state average ~659 per filing). Assets: $6.9B.
- #8,835
- in Finance & Insurance (8,869 peers)
- +2.0%
- assets growth YoY
- 69×
- vs typical plan assets (national mean)
Liberty Mutual Retirement Benefit Plan's outsized position by total assets
Liberty Mutual Retirement Benefit Plan vs every filed plan by assets
End-of-year total assets · plan year 2023 · DOL Form 5500
$6,892,259,637 Highest reported value at or above every one 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
Liberty Mutual Retirement Benefit Plan's mega-plan peer group by participant headcount
Plan-year 2023 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Liberty Mutual Retirement Benefit Plan is a mega filing (37,145 participants), the rightmost band on the breakdown.
What changed between DOL Form 5500 filings
plan year 2022 → plan year 2023
- Liberty Mutual Retirement Benefit Plan reported net income rose from -$2.7B in the plan year 2022 filing to $56M in the plan year 2023 filing.
- Liberty Mutual Retirement Benefit Plan reported participants rose from 33,087 in the plan year 2022 filing to 37,145 in the plan year 2023 filing.
- Liberty Mutual Retirement Benefit Plan end-of-year assets rose from $6.8B in the plan year 2022 filing to $6.9B in the plan year 2023 filing.
DOL schedule card
Filing strip 043583679 · Liberty Mutual Group Inc. PY 2023 · Defined Benefit (Pension)
Liberty Mutual Retirement Benefit Plan · $6.9B · 37,145 · 100th
- EBSA $6.9B
- PART 37,145
- TYPE 100th
- NET Defined Benefit (Pension)
- BOOK near Southwest Carpenters Pension Trust
- VS-ST ind #8835
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 →
Liberty Mutual Retirement Benefit Plan in the asset neighbourhood
Massachusetts filing particulars
| Total Assets (Beginning of Year) | $6.8B |
|---|---|
| Net Assets (End of Year) | $6.8B |
| Net Income | $56M |
| Employer EIN | 043583679 |
| Plan Effective Date | 1951-05-01 |
| Filing Status | FILING RECEIVED |
Sponsor Plan History (Liberty Mutual Group Inc.)
Sponsor-wide plan assets over time
All Liberty Mutual Group Inc. plans reported in each filing year
- Latest sponsor-wide plan assets
- $17.6B 13.170791316782784% vs 2022
- 2024 filing year
| Year | Plans | Participants | Total Assets |
|---|---|---|---|
| 2022 | 2 | 65,930 | $15.6B |
| 2023 | 2 | 74,197 | $17.4B |
| 2024 | 2 | 69,528 | $17.6B |
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 $10.3B · 58,745
- New England Teamsters Pension Fund $9.1B · 21,786
- Massachusetts Institute of Technology Basic Retirement Plan $5.4B · 11,888
- N. Atlantic States Carp. Pension Fund $5.0B · 17,166
- N. Atlantic States Carp. Guaranteed Annuity Fund $3.7B · 10,911
Scale composition for Liberty Mutual Retirement Benefit Plan
Liberty Mutual Retirement Benefit Plan reports $6.9B in end-of-year assets across 37,145 participants (0.056% of the $12.3T held by all Form 5500 filers in the national rollup , and 0.040% of 93,925,755 covered participants) - about $185,550 per participant (1.3x the national average assets-per-participant) . Net income for plan year 2023 was $56M.
This plan identity (EIN 043583679, plan #001) has 3 Form 5500 filings on file from 2022 to 2024 , with end-of-year assets moving from $6.8B to $6.3B (-7.5%) while covered participants moved from 33,087 to 34,910 . Single-year sparse filers cannot show that trail.
| Plan year | Participants | EOY assets | Filing |
|---|---|---|---|
| 2022 | 33,087 | $6.8B | Open filing |
| 2023 | 37,145 | $6.9B | This page |
| 2024 · index core | 34,910 | $6.3B | Open filing |
The same sponsor also keeps 2 other index-core plans on PlainRetire:
- Liberty Mutual 401(k) Plan (401(k), $11.4B, 34,618 participants)
- Liberty Mutual Retirement Benefit Plan (Defined Benefit (Pension), $6.3B, 34,910 participants)
Liberty Mutual Retirement Benefit Plan's out-of-state Defined Benefit (Pension) peers by assets and headcount
Outside Massachusetts, the nearest Defined Benefit (Pension) by assets is Southwest Carpenters Pension Trust in CA ($6.8B); by covered participants it is Kaiser Permanente Employees Pension Plan in CA (37,245 participants). Same-state nearby plans are listed separately above.
Closest by plan assets
Nearest other-state filings by tot_assets_eoy ($6.9B here).
- Southwest Carpenters Pension Trust (CA) $6.8B · 45,891
- Altria Retirement Plan (VA) $6.7B · 2,242
- United Association National Pension Fund (VA) $7.1B · 84,317
- Firstenergy Corp. Master Pension Plan (OH) $7.1B · 12,304
Similar participant headcount
Nearest other-state filings by covered participants (37,145 participants); asset peers above are excluded.
- Kaiser Permanente Employees Pension Plan (CA) 37,245 · 100 off
- Retirement Plan of Johnson and Johnson (NJ) 37,749 · 604 off
- Sutter Health Retirement Plan (CA) 34,955 · 2,190 off
- Rocky Mountain Ufcw Unions and Employers Retail and Meat Pension Plan (CO) 39,434 · 2,289 off
DOL Form 5500 plan year 2023. Asset totals can differ widely at the same headcount; neither axis is a quality rating.