401(k) · DOL Form 5500 · 2024

Liberty Mutual Group Inc. 401(k) Plan

Data updated 2026-07-24

$11.4B
Total assets: 34,618
Participants: 100th
Percentile by assets: $327,939
Avg per participant

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.

100th percentile by assets (of 116,472 plans)

Coverage in Massachusetts

Liberty Mutual 401(k) Plan covers 34,618 participants in Massachusetts, 54x the typical Massachusetts plan (state average ~641 per filing). Assets: $11.4B.

$11.4B
total plan assets (2024 EOY): 34,618
covered participants: 100th
percentile by assets (of 116,472 plans): $327,939
avg assets per participant

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.

See the national 2023→2024 release diff →

State

Massachusetts

Industry

Finance & Insurance

Participants vs Massachusetts filers

In Massachusetts, the average filing covers about 641 participants across 3,941 plans. Liberty Mutual 401(k) Plan reports 34,618 participants - 54x that state average ($11.4B EOY assets).

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.)

Total plan assets by year, all Liberty Mutual Group Inc. plans on file

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.

Liberty Mutual 401(k) Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants

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

Compare Liberty Mutual 401(k) Plan side-by-side with 3 peers →

Similar-Sized 401(k) Plans Nationally

401(k) plans in other states closest to Liberty Mutual 401(k) Plan by total assets, not by location.

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

Frequently Asked Questions

How did Liberty Mutual 401(k) Plan assets move in 2024? ▼

Liberty Mutual 401(k) Plan grew at a solid clip - up 7.5% during 2024, from $10.6B to $11.4B. Reported net income was $934M.

How have Liberty Mutual Group Inc. plan assets changed over time? ▼

Across 3 plan years on file (2022-2024), Liberty Mutual Group Inc.'s sponsor-wide assets grew 13.2%, from $15.6B to $17.6B.

Where does Liberty Mutual 401(k) Plan rank by assets among Form 5500 filers? ▼

Liberty Mutual 401(k) Plan ranks in the 100th percentile by end-of-year assets among 116,472 plans that reported assets for plan year 2024 (among the largest 1% of all filed plans).

Which 401(k) plans are similar in size to Liberty Mutual 401(k) Plan? ▼

Among 401(k) plans in other states, the closest by assets is Duke Energy Retirement Savings Plan in NC ($11.3B, 27,341 participants).

Next read for Liberty Mutual 401(k) Plan

Filing takeaways

Ways to act on Liberty Mutual 401(k) Plan's numbers.

By total assets, Liberty Mutual 401(k) 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 Massachusetts. Compare plans
Liberty Mutual Group Inc.'s sponsor-wide assets have grown 13.2% since 2022 across 3 plan years on file. More Finance & Insurance plans

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2024.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 043583679.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from U.S. Department of Labor Form 5500 filings (EBSA). See our methodology for details.