401(k) · DOL Form 5500 · 2023
Massachusetts Institute of Technology 401(k) Plan
Data updated 2026-08-06
- $6.8B
- Total assets
- 14,094
- Participants
- 100th
- Percentile by assets
- $484,597
- Avg per participant
Official DOL plan name: Massachusetts Institute of Technology Supplemental 401(k) Plan · Sponsored by Massachusetts Institute of Technology · Massachusetts · Educational Services
$6.8B in assets, 14,094 participants
Massachusetts Institute of Technology's Massachusetts Institute of Technology Supplemental 401(k) Plan reported $6.8B in total assets and 14,094 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.
- 100th percentile by assets (of 126,618 plans)
- #3,714 in Educational Services (3,719 peers)
Coverage in Massachusetts
Massachusetts Institute of Technology Supplemental 401(k) Plan covers 14,094 participants in Massachusetts, 22x the typical Massachusetts plan (state average ~641 per filing). Assets: $6.8B.
- $6.8B
- total plan assets (2023 EOY)
- 14,094
- covered participants
- 100th
- percentile by assets (of 126,618 plans)
- $484,597
- avg assets per participant
What changed between DOL Form 5500 filings
plan year 2022 → plan year 2023
- Massachusetts Institute of Technology Supplemental 401(k) Plan reported net income rose from -$1.3B in the plan year 2022 filing to $1.0B in the plan year 2023 filing.
- Massachusetts Institute of Technology Supplemental 401(k) Plan end-of-year assets rose from $5.8B in the plan year 2022 filing to $6.8B in the plan year 2023 filing.
- Massachusetts Institute of Technology Supplemental 401(k) Plan reported participants rose from 13,690 in the plan year 2022 filing to 14,094 in the plan year 2023 filing.
Participants vs Massachusetts filers
In Massachusetts, the average filing covers about 641 participants across 3,941 plans. Massachusetts Institute of Technology Supplemental 401(k) Plan reports 14,094 participants - 22x that state average ($6.8B EOY assets).
Massachusetts filing particulars
| Total Assets (Beginning of Year) | $5.8B |
|---|---|
| Net Assets (End of Year) | $6.8B |
| Net Income | $1.0B |
| Employer EIN | 042103594 |
| Plan Effective Date | 1985-01-01 |
| Filing Status | FILING RECEIVED |
Sponsor Plan History (Massachusetts Institute of Technology)
| Year | Plans | Participants | Total Assets |
|---|---|---|---|
| 2022 | 2 | 25,525 | $11.1B |
| 2023 | 2 | 25,982 | $12.2B |
| 2024 | 2 | 27,295 | $13.6B |
Nearby 401(k) Plans in Massachusetts
Peer 401(k) plans, same state, same plan type, ranked by total assets.
Massachusetts Institute of Technology Supplemental 401(k) Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants
- Fidelity Retirement Savings Plan $28.6B · 62,289
- Liberty Mutual 401(k) Plan $10.6B · 37,052
- Boston Scientific Corporation 401(k) Retirement Savings Plan $5.8B · 19,881
- Philips North America 401(k) Plan $5.8B · 19,120
- State Street Salary Savings Program $5.7B · 12,168
Scale composition for Massachusetts Institute of Technology Supplemental 401(k) Plan
Massachusetts Institute of Technology Supplemental 401(k) Plan reports $6.8B in end-of-year assets across 14,094 participants (0.059% of the $11.6T held by all Form 5500 filers in the national rollup , and 0.016% of 89,805,449 covered participants) - about $484,597 per participant (3.5x the national average assets-per-participant) . Net income for plan year 2023 was $1.0B.
This plan identity (EIN 042103594, plan #005) has 3 Form 5500 filings on file from 2022 to 2024 , with end-of-year assets moving from $5.8B to $7.7B (+32.9%) while covered participants moved from 13,690 to 14,762 . Single-year sparse filers cannot show that trail.
| Plan year | Participants | EOY assets | Filing |
|---|---|---|---|
| 2022 | 13,690 | $5.8B | Open filing |
| 2023 | 14,094 | $6.8B | This page |
| 2024 · index core | 14,762 | $7.7B | Open filing |
The same sponsor also keeps 2 other index-core plans on PlainRetire:
- Massachusetts Institute of Technology Supplemental 401(k) Plan (401(k), $7.7B, 14,762 participants)
- Massachusetts Institute of Technology Basic Retirement Plan (Defined Benefit (Pension), $5.9B, 12,533 participants)
Similar-Sized 401(k) Plans Nationally
401(k) plans in other states closest to Massachusetts Institute of Technology Supplemental 401(k) Plan by total assets, not by location.
- Retirement Savings Plan (DE) $6.8B · 9,968
- Nestle 401(k) Savings Plan (OH) $6.8B · 31,854
- Schlumberger Technology Corporation Savings and Profit Sharing Plan (TX) $6.8B · 16,701
- Allstate 401(k) Savings Plan (TX) $6.8B · 40,638
Frequently Asked Questions
How did Massachusetts Institute of Technology Supplemental 401(k) Plan assets move in 2023? ▼
How have Massachusetts Institute of Technology plan assets changed over time? ▼
Where does Massachusetts Institute of Technology Supplemental 401(k) Plan rank by assets among Form 5500 filers? ▼
Which 401(k) plans are similar in size to Massachusetts Institute of Technology Supplemental 401(k) Plan? ▼
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Filing takeaways
Ways to act on Massachusetts Institute of Technology Supplemental 401(k) Plan's numbers.
- By total assets, Massachusetts Institute of Technology Supplemental 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
- Massachusetts Institute of Technology's sponsor-wide assets have grown 22.7% since 2022 across 3 plan years on file. More Educational Services plans