401(k) · DOL Form 5500 · 2023
Liberty Mutual Group Inc. 401(k) Plan
Data updated 2026-08-25
- $10.6B
- Total assets Mega-plan scale
- 37,052
- Participants Very large workforce
- 100th
- Percentile by assets National rank
- $284,913
- Avg per participant High balance/head
Official DOL plan name: Liberty Mutual 401(k) Plan · Sponsored by Liberty Mutual Group Inc. · Massachusetts · Finance & Insurance
$10.6B in assets, 37,052 participants
Liberty Mutual Group Inc.'s Liberty Mutual 401(k) Plan reported $10.6B in total assets and 37,052 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.
- #8,854 in Finance & Insurance (8,869 peers)
Coverage in Massachusetts
Liberty Mutual 401(k) Plan covers 37,052 participants in Massachusetts, 56x the typical Massachusetts plan (state average ~659 per filing). Assets: $10.6B.
- #8,854
- in Finance & Insurance (8,869 peers)
- +20.0%
- assets growth YoY
- 106×
- 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 2023 · DOL Form 5500
$10,556,596,852 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 401(k) 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 401(k) Plan is a mega filing (37,052 participants), the rightmost band on the breakdown.
What changed between DOL Form 5500 filings
plan year 2022 → plan year 2023
- Liberty Mutual 401(k) Plan reported net income rose from -$1.9B in the plan year 2022 filing to $1.3B in the plan year 2023 filing.
- Liberty Mutual 401(k) Plan end-of-year assets rose from $8.8B in the plan year 2022 filing to $10.6B in the plan year 2023 filing.
- Liberty Mutual 401(k) Plan reported participants rose from 32,843 in the plan year 2022 filing to 37,052 in the plan year 2023 filing.
Published 5500 schedule card
Filing strip 043583679 · Liberty Mutual Group Inc. PY 2023 · 401(k)
Liberty Mutual 401(k) Plan · $10.6B · 37,052 · 100th
- TYPE $10.6B
- NET 37,052
- BOOK 100th
- VS-ST 401(k)
- BOY near Leidos, Inc. Retirement Plan
- SCH ind #8854
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) | $8.8B |
|---|---|
| Net Assets (End of Year) | $9.8B |
| Net Income | $1.3B |
| 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 $28.6B · 62,289
- Massachusetts Institute of Technology Supplemental 401(k) Plan $6.8B · 14,094
- Boston Scientific Corporation 401(k) Retirement Savings Plan $5.8B · 19,881
- Philips North America 401(k) Plan $5.8B · 19,120
- State Street Salary Savings Program $5.7B · 12,168
Scale composition for Liberty Mutual 401(k) Plan
Liberty Mutual 401(k) Plan reports $10.6B in end-of-year assets across 37,052 participants (0.086% of the $12.3T held by all Form 5500 filers in the national rollup , and 0.039% of 93,925,755 covered participants) - about $284,913 per participant (2.1x the national average assets-per-participant) . Net income for plan year 2023 was $1.3B.
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 | This page |
| 2024 · index core | 34,618 | $11.4B | 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 401(k) Plan's out-of-state 401(k) peers by assets and headcount
Outside Massachusetts, the nearest 401(k) by assets is Leidos, Inc. Retirement Plan in VA ($10.6B); by covered participants it is Brinker International 401(k) Savings Plan in TX (37,077 participants). Same-state nearby plans are listed separately above.
Closest by plan assets
Nearest other-state filings by tot_assets_eoy ($10.6B here).
- Leidos, Inc. Retirement Plan (VA) $10.6B · 27,043
- Edward D. Jones & Co. Profit Sharing and 401(k) Plan (MO) $10.6B · 49,944
- The Prudential Employee Savings Plan (NJ) $10.4B · 16,321
- Shell Provident Fund (TX) $10.7B · 12,230
Similar participant headcount
Nearest other-state filings by covered participants (37,052 participants); asset peers above are excluded.
- Brinker International 401(k) Savings Plan (TX) 37,077 · 25 off
- Usaa Retirement Savings Plan (TX) 36,811 · 241 off
- Cbre 401(k) Plan (TX) 36,574 · 478 off
- Edustaff, LLC 401(k) Plan (MI) 36,336 · 716 off
DOL Form 5500 plan year 2023. Asset totals can differ widely at the same headcount; neither axis is a quality rating.