401(k) · DOL Form 5500 · 2023
Massachusetts Mutual Life Insurance Company 401(k) Plan
Data updated 2026-08-25
- $3.9B
- Total assets Very large vs avg
- 14,565
- Participants Very large workforce
- 100th
- Percentile by assets National rank
- $270,403
- Avg per participant High balance/head
Official DOL plan name: Massmutual Thrift Plan · Sponsored by Massachusetts Mutual Life Insurance Company · Massachusetts · Finance & Insurance
$3.9B in assets, 14,565 participants
Massachusetts Mutual Life Insurance Company's Massmutual Thrift Plan reported $3.9B in total assets and 14,565 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.
- #8,802 in Finance & Insurance (8,869 peers)
Coverage in Massachusetts
Massmutual Thrift Plan covers 14,565 participants in Massachusetts, 22x the typical Massachusetts plan (state average ~659 per filing). Assets: $3.9B.
- #8,802
- in Finance & Insurance (8,869 peers)
- +10.9%
- assets growth YoY
- 40×
- vs typical plan assets (national mean)
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 2023 · DOL Form 5500
$3,938,416,393 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
Massmutual Thrift 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. Massmutual Thrift Plan is a mega filing (14,565 participants), the rightmost band on the breakdown.
What changed between DOL Form 5500 filings
plan year 2022 → plan year 2023
- Massmutual Thrift Plan reported net income rose from -$575M in the plan year 2022 filing to $388M in the plan year 2023 filing.
- Massmutual Thrift Plan end-of-year assets rose from $3.6B in the plan year 2022 filing to $3.9B in the plan year 2023 filing.
- Massmutual Thrift Plan reported participants fell from 15,229 in the plan year 2022 filing to 14,565 in the plan year 2023 filing.
DOL schedule card
Filing strip 041590850 · Massachusetts Mutual Life Insurance Company PY 2023 · 401(k)
Massmutual Thrift Plan · $3.9B · 14,565 · 100th
- EBSA $3.9B
- EBSA 14,565
- EBSA 100th
- EBSA 401(k)
- EBSA near Xerox Corporation Savings Plan
- EBSA ind #8802
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) | $3.6B |
|---|---|
| Net Assets (End of Year) | $3.9B |
| Net Income | $388M |
| 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 $28.6B · 62,289
- Liberty Mutual 401(k) Plan $10.6B · 37,052
- 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
Scale composition for Massmutual Thrift Plan
Massmutual Thrift Plan reports $3.9B in end-of-year assets across 14,565 participants (0.032% of the $12.3T held by all Form 5500 filers in the national rollup , and 0.016% of 93,925,755 covered participants) - about $270,403 per participant (2.0x the national average assets-per-participant) . Net income for plan year 2023 was $388M.
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 | Open filing |
| 2023 | 14,565 | $3.9B | This page |
| 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 Xerox Corporation Savings Plan in CT ($3.9B); by covered participants it is Applied Materials, Inc. Employee Savings & Retirement Plan in CA (14,583 participants). Same-state nearby plans are listed separately above.
Closest by plan assets
Nearest other-state filings by tot_assets_eoy ($3.9B here).
- Xerox Corporation Savings Plan (CT) $3.9B · 10,291
- Nfl Player Second Career Savings Plan (MD) $4.0B · 2,767
- Nordstrom 401(k) Plan (WA) $3.9B · 61,127
- Federal National Mortgage Association Retirement Savings Plan for Employees (DC) $3.9B · 8,044
Similar participant headcount
Nearest other-state filings by covered participants (14,565 participants); asset peers above are excluded.
- Applied Materials, Inc. Employee Savings & Retirement Plan (CA) 14,583 · 18 off
- Metlife 401(k) Plan (NJ) 14,594 · 29 off
- General Mills 401(k) Plan (MN) 14,536 · 29 off
- Bob Evans Restaurants, LLC 401(k) Retirement Plan (OH) 14,600 · 35 off
DOL Form 5500 plan year 2023. Asset totals can differ widely at the same headcount; neither axis is a quality rating.