401(k) · DOL Form 5500 · 2022
Massachusetts Mutual Life Insurance Company 401(k) Plan
Data updated 2026-08-25
- $3.6B
- Total assets Very large vs avg
- 15,229
- Participants Very large workforce
- 100th
- Percentile by assets National rank
- $233,126
- Avg per participant Above avg balance/head
Official DOL plan name: Massmutual Thrift Plan · Sponsored by Massachusetts Mutual Life Insurance Company · Massachusetts · Finance & Insurance
$3.6B in assets, 15,229 participants
Massachusetts Mutual Life Insurance Company's Massmutual Thrift Plan reported $3.6B in total assets and 15,229 participants in its 2022 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.
- #9,198 in Finance & Insurance (9,261 peers)
Coverage in Massachusetts
Massmutual Thrift Plan covers 15,229 participants in Massachusetts, 23x the typical Massachusetts plan (state average ~659 per filing). Assets: $3.6B.
- #9,198
- in Finance & Insurance (9,261 peers)
- -13.9%
- assets change YoY
- 36×
- vs typical plan assets (national mean)
The plan reported a net loss of $575M for the year, a single-year figure driven by markets and benefit payments, not a measure of plan health.
Massmutual Thrift Plan's outsized position by total assets
Massmutual Thrift Plan vs every filed plan by assets
End-of-year total assets · plan year 2022 · DOL Form 5500
$3,550,275,191 Highest reported value at or above every one of 139,123 filed plans
Dashed line + filled bar = this entry, among filed plans.
Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2022
Massmutual Thrift Plan's mega-plan peer group by participant headcount
Plan-year 2022 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Massmutual Thrift Plan is a mega filing (15,229 participants), the rightmost band on the breakdown.
Published 5500 schedule card
Filing strip 041590850 · Massachusetts Mutual Life Insurance Company PY 2022 · 401(k)
Massmutual Thrift Plan · $3.6B · 15,229 · 100th
- EIN $3.6B
- RANK 15,229
- PHOTO 100th
- IND 401(k)
- EOY near Banner Health Employees 401(k) Plan
- 5500 ind #9198
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 Thrift Plan in the asset neighbourhood
Massachusetts filing particulars
| Total Assets (Beginning of Year) | $4.1B |
|---|---|
| Net Assets (End of Year) | $3.6B |
| Net Income | -$575M |
| Employer EIN | 041590850 |
| Plan Effective Date | 1974-07-01 |
| 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 401(k) Plans in Massachusetts
Peer 401(k) plans, same state, same plan type, ranked by total assets.
- Fidelity Retirement Savings Plan $23.0B · 52,036
- Liberty Mutual 401(k) Plan $8.8B · 32,843
- Massachusetts Institute of Technology Supplemental 401(k) Plan $5.8B · 13,690
- Philips North America 401(k) Plan $5.2B · 19,750
- Boston Scientific Corporation 401(k) Retirement Savings Plan $4.9B · 18,359
Scale composition for Massmutual Thrift Plan
Massmutual Thrift Plan reports $3.6B in end-of-year assets across 15,229 participants (0.029% of the $12.3T held by all Form 5500 filers in the national rollup , and 0.016% of 93,925,755 covered participants) - about $233,126 per participant (1.7x the national average assets-per-participant) . Net income for plan year 2022 was -$575M.
This plan identity (EIN 041590850, plan #004) has 3 Form 5500 filings on file from 2022 to 2024 , with end-of-year assets moving from $3.6B to $4.3B (+22.0%) while covered participants moved from 15,229 to 13,502 . Single-year sparse filers cannot show that trail.
| Plan year | Participants | EOY assets | Filing |
|---|---|---|---|
| 2022 | 15,229 | $3.6B | This page |
| 2023 | 14,565 | $3.9B | Open filing |
| 2024 · index core | 13,502 | $4.3B | Open filing |
The same sponsor also keeps 3 other index-core plans on PlainRetire:
- Massmutual Thrift Plan (401(k), $4.3B, 13,502 participants)
- Massmutual Pension Plan (Defined Benefit (Pension), $2.5B, 13,404 participants)
- Massachusetts Mutual Life Insurance Company Agent Pension Plan (Money Purchase, $145M, 351 participants)
Massmutual Thrift Plan's out-of-state 401(k) peers by assets and headcount
Outside Massachusetts, the nearest 401(k) by assets is Banner Health Employees 401(k) Plan in AZ ($3.6B); by covered participants it is Hewlett Packard Enterprise 401(k)Plan in TX (15,255 participants). Same-state nearby plans are listed separately above.
Closest by plan assets
Nearest other-state filings by tot_assets_eoy ($3.6B here).
- Banner Health Employees 401(k) Plan (AZ) $3.6B · 50,602
- Publicis Benefits Connection 401(k) Plan (IL) $3.6B · 25,067
- Pg&e Corporation Retirement Savings Plan (CA) $3.6B · 10,112
- Firstenergy Corp. Savings Plan (OH) $3.5B · 11,979
Similar participant headcount
Nearest other-state filings by covered participants (15,229 participants); asset peers above are excluded.
- Hewlett Packard Enterprise 401(k)Plan (TX) 15,255 · 26 off
- Ppg Industries, Inc. Employee Savings Plan (PA) 15,202 · 27 off
- Techtronic Industries 401(k) Retirement Plan (FL) 15,201 · 28 off
- Addus Healthcare, Inc. 401(k) Plan (IL) 15,190 · 39 off
DOL Form 5500 plan year 2022. Asset totals can differ widely at the same headcount; neither axis is a quality rating.