401(k) · DOL Form 5500 · 2024

Massachusetts Property Insurance Underwriting Association 401(k) Plan

Data updated 2026-08-25

$59M
Total assets Below avg plan size
138
Participants Small participant base
86th
Percentile by assets National rank
$426,740
Avg per participant High balance/head
PlainRetire home → About this data RSS: change history

Official DOL plan name: Insurance Company Supported Organizations 401(k) Savings Plan · Sponsored by Massachusetts Property Insurance Underwriting Association · Massachusetts · Finance & Insurance

$59M in assets, 138 participants

Massachusetts Property Insurance Underwriting Association's Insurance Company Supported Organizations 401(k) Savings Plan reported $59M in total assets and 138 participants in its 2024 DOL Form 5500 filing, ranking in the 86th 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.

  • #6,677 in Finance & Insurance (8,549 peers)

Coverage in Massachusetts

Insurance Company Supported Organizations 401(k) Savings Plan covers 138 participants in Massachusetts, about 21% of the average Massachusetts filer (state average ~659 per filing). Assets: $59M.

#6,677
in Finance & Insurance (8,549 peers)
+9.0%
assets growth YoY
0.6×
vs typical plan assets (national mean)

Insurance Company Supported Organizations 401(k) Savings Plan's outsized position by total assets

Insurance Company Supported Organizations 401(k) Savings Plan vs every filed plan by assets

End-of-year total assets · plan year 2024 · DOL Form 5500

$58,890,150 Top 14% higher than 86% of 123,620 filed plans

This plan $0 $2,050,000,000 every filed plan with reported assets, bucketed by value

Dashed line + filled bar = this entry, among filed plans.

Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2024

Insurance Company Supported Organizations 401(k) Savings Plan among mid-size filed plans by headcount

Plan-year 2024 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Insurance Company Supported Organizations 401(k) Savings Plan sits mid-pack in the medium band (138 participants).

What changed between DOL Form 5500 filings

plan year 2023 → plan year 2024

  • Insurance Company Supported Organizations 401(k) Savings Plan reported net income fell from $9M in the plan year 2023 filing to $5M in the plan year 2024 filing.
  • Insurance Company Supported Organizations 401(k) Savings Plan end-of-year assets rose from $54M in the plan year 2023 filing to $59M in the plan year 2024 filing.
  • Insurance Company Supported Organizations 401(k) Savings Plan reported participants rose from 136 in the plan year 2023 filing to 138 in the plan year 2024 filing.

See the national 2023→2024 release diff →

Published 5500 schedule card

Filing strip 042503445 · Massachusetts Property Insurance Underwriting Association PY 2024 · 401(k)

Insurance Company Supported Organizations 401(k) Savings Plan · $59M · 138 · 86th

  • EIN $59M
  • RANK 138
  • PHOTO 86th
  • IND 401(k)
  • EOY near Diagnostic Imaging Associates, P.C. 401(k) Profit Sharing Plan
  • 5500 ind #6677

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 →

Insurance Company Supported Organizations 401(k) Savings Plan in the asset neighbourhood

Gate Gourmet, Inc. Bargained Employees' 401(k) PlanGate Gourmet, Inc. Bargained…$59MAnderson Center for Autism Retirement PlanAnderson Center for Autism R…$59MDiagnostic Imaging Associates, P.C. 401(k) Profit Sharing PlanDiagnostic Imaging Associate…$59MInsurance Company Supported Organizations 401(k) Savings PlanInsurance Company Supported …$59M403(b) Thrift Plan of International Community Health Services403(b) Thrift Plan of Intern…$59M
End-of-year total assets ($M) among Insurance Company Supported Organizations 401(k) Savings Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2024.

Massachusetts filing particulars

Total Assets (Beginning of Year)$54M
Net Assets (End of Year)$59M
Net Income$5M
Employer EIN042503445
Plan Effective Date1978-05-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Massachusetts Property Insurance Underwriting Association)

Sponsor-wide plan assets over time

All Massachusetts Property Insurance Underwriting Association plans reported in each filing year

Latest sponsor-wide plan assets
$59M 29.908643727213104% vs 2022
2024 filing year
$40M$45M$50M$55M$60M$65M 202220232024 $45.3M $58.9M ▲ +29.9%
Year Plans Participants Total Assets
2022 1 139 $45M
2023 1 136 $54M
2024 1 138 $59M

Nearby 401(k) Plans in Massachusetts

Peer 401(k) plans, same state, same plan type, ranked by total assets.

Insurance Company Supported Organizations 401(k) Savings Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants Scatter plot of 6 data points. -20000020000400006000080000 -10010203040 Total assets ($B) Participants Insurance Company Supported Organizations 401(k) Savings Plan, Total assets ($B): 0.05889015 · Participants: 138Insurance Company Supported Organizations 401(k) Savings PlanFidelity Retirement Savings Plan, Total assets ($B): 34.201609937 · Participants: 66907Fidelity Retirement Savings PlanLiberty Mutual 401(k) Plan, Total assets ($B): 11.352606499 · Participants: 34618Liberty Mutual 401(k) PlanMassachusetts Institute of Technology Supplemental 401(k) Plan, Total assets ($B): 7.720373045 · Participants: 14762Massachusetts Institute of Technology Supplemental 401(k) PlanBoston Scientific Corporation 401(k) Retirement Savings Plan, Total assets ($B): 6.775289067 · Participants: 20639Boston Scientific Corporation 401(k) Retirement Savings PlanState Street Salary Savings Program, Total assets ($B): 6.532301643 · Participants: 12777State Street Salary Savings Program
Insurance Company Supported Organizations 401(k) Savings Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants

Insurance Company Supported Organizations 401(k) Savings Plan's out-of-state 401(k) peers by assets and headcount

Outside Massachusetts, the nearest 401(k) by assets is Diagnostic Imaging Associates, P.C. 401(k) Profit Sharing Plan in IA ($59M); by covered participants it is Budney Overhaul & Repair, Ltd Employee Retirement Plan in CT (138 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (138 participants); asset peers above are excluded.

DOL Form 5500 plan year 2024. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did Insurance Company Supported Organizations 401(k) Savings Plan assets move in 2024?
Insurance Company Supported Organizations 401(k) Savings Plan grew at a solid clip - up 9.0% during 2024, from $54M to $59M. Reported net income was $5M.
How have Massachusetts Property Insurance Underwriting Association plan assets changed over time?
Across 3 plan years on file (2022-2024), Massachusetts Property Insurance Underwriting Association's sponsor-wide assets grew 29.9%, from $45M to $59M.
Where does Insurance Company Supported Organizations 401(k) Savings Plan rank by assets among Form 5500 filers?
Insurance Company Supported Organizations 401(k) Savings Plan ranks in the 86th percentile by end-of-year assets among 123,622 plans that reported assets for plan year 2024 (in the top quartile of all filed plans by assets).
Which 401(k) plans are similar in size to Insurance Company Supported Organizations 401(k) Savings Plan?
Among 401(k) plans in other states, the closest by assets is Diagnostic Imaging Associates, P.C. 401(k) Profit Sharing Plan in IA ($59M, 19 participants).
Which 401(k) plans cover a similar participant headcount to Insurance Company Supported Organizations 401(k) Savings Plan?
Among 401(k) plans in other states, the closest by covered participants is Budney Overhaul & Repair, Ltd Employee Retirement Plan in CT (138 participants, $7M in assets).