401(k) · DOL Form 5500 · 2024
Liberty Mutual Group Inc. 401(k) Plan
Data updated 2026-08-25
- $11.4B
- Total assets Mega-plan scale
- 34,618
- Participants Very large workforce
- 100th
- Percentile by assets National rank
- $327,939
- Avg per participant High balance/head
Official DOL plan name: Liberty Mutual 401(k) Plan · Sponsored by Liberty Mutual Group Inc. · Massachusetts · Finance & Insurance
$11.4B in assets, 34,618 participants
Liberty Mutual Group Inc.'s Liberty Mutual 401(k) Plan reported $11.4B in total assets and 34,618 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.
- #8,533 in Finance & Insurance (8,549 peers)
Coverage in Massachusetts
Liberty Mutual 401(k) Plan covers 34,618 participants in Massachusetts, 53x the typical Massachusetts plan (state average ~659 per filing). Assets: $11.4B.
- #8,533
- in Finance & Insurance (8,549 peers)
- +7.5%
- assets growth YoY
- 114×
- vs typical plan assets (national mean)
Liberty Mutual 401(k) Plan's outsized position by total assets
Liberty Mutual 401(k) Plan vs every filed plan by assets
End-of-year total assets · plan year 2024 · DOL Form 5500
$11,352,606,499 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
Liberty Mutual 401(k) 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. Liberty Mutual 401(k) Plan is a mega filing (34,618 participants), the rightmost band on the breakdown.
What changed between DOL Form 5500 filings
plan year 2023 → plan year 2024
- Liberty Mutual 401(k) Plan reported net income fell from $1.3B in the plan year 2023 filing to $934M in the plan year 2024 filing.
- Liberty Mutual 401(k) Plan end-of-year assets rose from $10.6B in the plan year 2023 filing to $11.4B in the plan year 2024 filing.
- Liberty Mutual 401(k) Plan reported participants fell from 37,052 in the plan year 2023 filing to 34,618 in the plan year 2024 filing.
Published 5500 schedule card
Filing strip 043583679 · Liberty Mutual Group Inc. PY 2024 · 401(k)
Liberty Mutual 401(k) Plan · $11.4B · 34,618 · 100th
- ASSETS $11.4B
- PCT 34,618
- EIN 100th
- RANK 401(k)
- PHOTO near Duke Energy Retirement Savings Plan
- IND ind #8533
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 401(k) Plan in the asset neighbourhood
Massachusetts filing particulars
| Total Assets (Beginning of Year) | $10.6B |
|---|---|
| Net Assets (End of Year) | $10.8B |
| Net Income | $934M |
| Employer EIN | 043583679 |
| Plan Effective Date | 1975-01-01 |
| 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 401(k) Plans in Massachusetts
Peer 401(k) plans, same state, same plan type, ranked by total assets.
- Fidelity Retirement Savings Plan $34.2B · 66,907
- Massachusetts Institute of Technology Supplemental 401(k) Plan $7.7B · 14,762
- Boston Scientific Corporation 401(k) Retirement Savings Plan $6.8B · 20,639
- State Street Salary Savings Program $6.5B · 12,777
- Philips North America 401(k) Plan $6.4B · 18,388
Scale composition for Liberty Mutual 401(k) Plan
Liberty Mutual 401(k) Plan reports $11.4B in end-of-year assets across 34,618 participants (0.092% of the $12.3T held by all Form 5500 filers in the national rollup , and 0.037% of 93,925,755 covered participants) - about $327,939 per participant (2.4x the national average assets-per-participant) . Net income for plan year 2024 was $934M.
This plan identity (EIN 043583679, plan #002) has 3 Form 5500 filings on file from 2022 to 2024 , with end-of-year assets moving from $8.8B to $11.4B (+29.0%) while covered participants moved from 32,843 to 34,618 . Single-year sparse filers cannot show that trail.
| Plan year | Participants | EOY assets | Filing |
|---|---|---|---|
| 2022 | 32,843 | $8.8B | Open filing |
| 2023 | 37,052 | $10.6B | Open filing |
| 2024 · index core | 34,618 | $11.4B | This page |
The same sponsor also keeps 1 other index-core plan on PlainRetire:
- Liberty Mutual Retirement Benefit Plan (Defined Benefit (Pension), $6.3B, 34,910 participants)
Liberty Mutual 401(k) Plan's out-of-state 401(k) peers by assets and headcount
Outside Massachusetts, the nearest 401(k) by assets is Duke Energy Retirement Savings Plan in NC ($11.3B); by covered participants it is Robert Half Inc. 401(k) Plan for Contract Talent and Full-Time Engagement Professionals in CA (34,621 participants). Same-state nearby plans are listed separately above.
Closest by plan assets
Nearest other-state filings by tot_assets_eoy ($11.4B here).
- Duke Energy Retirement Savings Plan (NC) $11.3B · 27,341
- U.S. Bank 401(k) Savings Plan (MN) $11.4B · 73,109
- Shell Provident Fund (TX) $11.5B · 12,718
- The Progressive 401(k) Plan (OH) $11.5B · 62,521
Similar participant headcount
Nearest other-state filings by covered participants (34,618 participants); asset peers above are excluded.
- Robert Half Inc. 401(k) Plan for Contract Talent and Full-Time Engagement Professionals (CA) 34,621 · 3 off
- Brookdale Senior Living Inc. 401(k) Retirement Savings Plan (TN) 34,641 · 23 off
- Booz Allen Hamilton Inc. Employees' Capital Accumulation Plan (VA) 34,650 · 32 off
- Automatic Data Processing, Inc. Retirement and Savings Plan (NJ) 34,557 · 61 off
DOL Form 5500 plan year 2024. Asset totals can differ widely at the same headcount; neither axis is a quality rating.