401(k) · DOL Form 5500 · 2024

Ontario Systems, LLC 401(k) Plan

Data updated 2026-08-25

$72M
Total assets Below avg plan size
484
Participants Below avg headcount
88th
Percentile by assets National rank
$148,935
Avg per participant Above avg balance/head
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Official DOL plan name: Ontario Systems, LLC 401(k) Plan · Sponsored by Ontario Systems, LLC · Massachusetts · Professional & Technical Services

$72M in assets, 484 participants

Ontario Systems, LLC's Ontario Systems, LLC 401(k) Plan reported $72M in total assets and 484 participants in its 2024 DOL Form 5500 filing, ranking in the 88th 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.

  • #17,929 in Professional & Technical Services (20,173 peers)

Where Ontario Systems, LLC 401(k) Plan sits by assets

Ontario Systems, LLC 401(k) Plan sits in the top quartile of all filed plans by assets, $72M for 484 participants (~$148,935/participant), up 6.6% in 2024.

#17,929
in Professional & Technical Services (20,173 peers)
+6.6%
assets growth YoY
0.7×
vs typical plan assets (national mean)

Ontario Systems, LLC 401(k) Plan's outsized position by total assets

Ontario Systems, LLC 401(k) Plan vs every filed plan by assets

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

$72,084,548 Top 12% higher than 88% 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

Ontario Systems, LLC 401(k) 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. Ontario Systems, LLC 401(k) Plan sits mid-pack in the medium band (484 participants).

What changed between DOL Form 5500 filings

plan year 2023 → plan year 2024

  • Ontario Systems, LLC 401(k) Plan reported net income fell from $10M in the plan year 2023 filing to $4M in the plan year 2024 filing.
  • Ontario Systems, LLC 401(k) Plan end-of-year assets rose from $68M in the plan year 2023 filing to $72M in the plan year 2024 filing.
  • Ontario Systems, LLC 401(k) Plan reported participants fell from 503 in the plan year 2023 filing to 484 in the plan year 2024 filing.

See the national 2023→2024 release diff →

Form 5500 schedule snapshot

Filing strip 753122530 · Ontario Systems, LLC PY 2024 · 401(k)

Ontario Systems, LLC 401(k) Plan · $72M · 484 · 88th

  • 5500 $72M
  • ASSETS 484
  • PCT 88th
  • EIN 401(k)
  • RANK near Carlson 401(k) Savings Plan
  • PHOTO ind #17929

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 Professional & Technical Services retirement plans → · Plans in Massachusetts →

Ontario Systems, LLC 401(k) Plan in the asset neighbourhood

The Save Program for Employees of Viskase Companies, Inc.The Save Program for Employe…$72MRisk Strategies Pooled Employer Plan for Private Equity Portfolio Co'sRisk Strategies Pooled Emplo…$72MSage Automotive Interiors, Inc. 401(k) PlanSage Automotive Interiors, I…$72MOntario Systems, LLC 401(k) PlanOntario Systems, LLC 401(k) …$72MCarlson 401(k) Savings Plan$72M
End-of-year total assets ($M) among Ontario Systems, LLC 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2024.

Scale-class filing particulars (2024)

Total Assets (Beginning of Year)$68M
Net Assets (End of Year)$72M
Net Income$4M
Employer EIN753122530
Plan Effective Date2003-08-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Ontario Systems, LLC)

Sponsor-wide plan assets over time

All Ontario Systems, LLC plans reported in each filing year

Latest sponsor-wide plan assets
$72M 25.061360864898113% vs 2022
2024 filing year
$55M$60M$65M$70M$75M 202220232024 $57.6M $72.1M ▲ +25.1%
Year Plans Participants Total Assets
2022 1 565 $58M
2023 1 503 $68M
2024 1 484 $72M

Nearby 401(k) Plans in Massachusetts

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

Ontario Systems, LLC 401(k) Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants Scatter plot of 6 data points. -20000020000400006000080000 -10010203040 Total assets ($B) Participants Ontario Systems, LLC 401(k) Plan, Total assets ($B): 0.072084548 · Participants: 484Ontario Systems, LLC 401(k) 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
Ontario Systems, LLC 401(k) Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants
Compare Ontario Systems, LLC 401(k) Plan side-by-side with 3 peers →

Ontario Systems, LLC 401(k) Plan's out-of-state 401(k) peers by assets and headcount

Outside Massachusetts, the nearest 401(k) by assets is Carlson 401(k) Savings Plan in MN ($72M); by covered participants it is Murata Electronics North America, Inc. Employees' Retirement Savings Plan in GA (484 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (484 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 Ontario Systems, LLC 401(k) Plan assets move in 2024? ▼
Ontario Systems, LLC 401(k) Plan grew at a solid clip - up 6.6% during 2024, from $68M to $72M. Reported net income was $4M.
How have Ontario Systems, LLC plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Ontario Systems, LLC's sponsor-wide assets grew 25.1%, from $58M to $72M.
Where does Ontario Systems, LLC 401(k) Plan rank by assets among Form 5500 filers? ▼
Ontario Systems, LLC 401(k) Plan ranks in the 88th 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 Ontario Systems, LLC 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is Carlson 401(k) Savings Plan in MN ($72M, 103 participants).
Which 401(k) plans cover a similar participant headcount to Ontario Systems, LLC 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Murata Electronics North America, Inc. Employees' Retirement Savings Plan in GA (484 participants, $163M in assets).

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 753122530.

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.