401(k) · DOL Form 5500 · 2024
Marsh & Mclennan Companies, Inc. 401(k) Plan
Data updated 2026-08-25
- $7.4B
- Total assets Very large vs avg
- 20,222
- Participants Very large workforce
- 100th
- Percentile by assets National rank
- $366,188
- Avg per participant High balance/head
Official DOL plan name: Marsh & Mclennan Companies 401(k) Savings and Investment Plan · Sponsored by Marsh & Mclennan Companies, Inc. · New York · Finance & Insurance
$7.4B in assets, 20,222 participants
Marsh & Mclennan Companies, Inc.'s Marsh & Mclennan Companies 401(k) Savings and Investment Plan reported $7.4B in total assets and 20,222 participants in its 2024 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.
- #8,516 in Finance & Insurance (8,549 peers)
Coverage in New York
Marsh & Mclennan Companies 401(k) Savings and Investment Plan covers 20,222 participants in New York, 25x the typical New York plan (state average ~798 per filing). Assets: $7.4B.
- #8,516
- in Finance & Insurance (8,549 peers)
- +10.6%
- assets growth YoY
- 74×
- vs typical plan assets (national mean)
Marsh & Mclennan Companies 401(k) Savings and Investment Plan's outsized position by total assets
Marsh & Mclennan Companies 401(k) Savings and Investment Plan vs every filed plan by assets
End-of-year total assets · plan year 2024 · DOL Form 5500
$7,405,052,698 Highest reported value at or above every one of 123,620 filed plans
Dashed line + filled bar = this entry, among filed plans.
Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2024
Marsh & Mclennan Companies 401(k) Savings and Investment Plan's mega-plan peer group by participant headcount
Plan-year 2024 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Marsh & Mclennan Companies 401(k) Savings and Investment Plan is a mega filing (20,222 participants), the rightmost band on the breakdown.
What changed between DOL Form 5500 filings
plan year 2023 → plan year 2024
- Marsh & Mclennan Companies 401(k) Savings and Investment Plan reported net income fell from $947M in the plan year 2023 filing to $712M in the plan year 2024 filing.
- Marsh & Mclennan Companies 401(k) Savings and Investment Plan reported participants rose from 18,101 in the plan year 2023 filing to 20,222 in the plan year 2024 filing.
- Marsh & Mclennan Companies 401(k) Savings and Investment Plan end-of-year assets rose from $6.7B in the plan year 2023 filing to $7.4B in the plan year 2024 filing.
Published 5500 schedule card
Filing strip 362668272 · Marsh & Mclennan Companies, Inc. PY 2024 · 401(k)
Marsh & Mclennan Companies 401(k) Savings and Investment Plan · $7.4B · 20,222 · 100th
- BOOK $7.4B
- BOOK 20,222
- BOOK 100th
- BOOK 401(k)
- BOOK near Schlumberger Technology Corporation Savings and Retirement Plan
- BOOK ind #8516
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 New York →
Marsh & Mclennan Companies 401(k) Savings and Investment Plan in the asset neighbourhood
New York filing particulars
| Total Assets (Beginning of Year) | $6.7B |
|---|---|
| Net Assets (End of Year) | $7.4B |
| Net Income | $712M |
| Employer EIN | 362668272 |
| Plan Effective Date | 1966-07-01 |
| Filing Status | FILING RECEIVED |
Sponsor Plan History (Marsh & Mclennan Companies, Inc.)
Sponsor-wide plan assets over time
All Marsh & Mclennan Companies, Inc. plans reported in each filing year
- Latest sponsor-wide plan assets
- $13.1B 18.19146104996544% vs 2022
- 2024 filing year
| Year | Plans | Participants | Total Assets |
|---|---|---|---|
| 2022 | 5 | 35,424 | $11.1B |
| 2023 | 5 | 35,658 | $12.4B |
| 2024 | 5 | 39,116 | $13.1B |
Nearby 401(k) Plans in New York
Peer 401(k) plans, same state, same plan type, ranked by total assets.
- IBM 401(k) Plan $60.4B · 52,674
- Morgan Stanley 401(k) Plan $22.2B · 53,860
- Pfizer Savings Plan $22.0B · 33,309
- The Pepsico Savings Plan $14.9B · 137,398
- The Goldman Sachs 401(k) Plan $12.8B · 23,227
Scale composition for Marsh & Mclennan Companies 401(k) Savings and Investment Plan
Marsh & Mclennan Companies 401(k) Savings and Investment Plan reports $7.4B in end-of-year assets across 20,222 participants (0.060% of the $12.3T held by all Form 5500 filers in the national rollup , and 0.022% of 93,925,755 covered participants) - about $366,188 per participant (2.6x the national average assets-per-participant) . Net income for plan year 2024 was $712M.
This plan identity (EIN 362668272, plan #003) has 3 Form 5500 filings on file from 2022 to 2024 , with end-of-year assets moving from $5.8B to $7.4B (+28.8%) while covered participants moved from 18,458 to 20,222 . Single-year sparse filers cannot show that trail.
| Plan year | Participants | EOY assets | Filing |
|---|---|---|---|
| 2022 | 18,458 | $5.8B | Open filing |
| 2023 | 18,101 | $6.7B | Open filing |
| 2024 · index core | 20,222 | $7.4B | This page |
The same sponsor also keeps 2 other index-core plans on PlainRetire:
- Marsh & Mclennan Companies Retirement Plan (Defined Benefit (Pension), $4.2B, 7,319 participants)
- Marsh & Mclennan Agency 401(k) Savings & Investment Plan (401(k), $1.5B, 11,530 participants)
Marsh & Mclennan Companies 401(k) Savings and Investment Plan's out-of-state 401(k) peers by assets and headcount
Outside New York, the nearest 401(k) by assets is Schlumberger Technology Corporation Savings and Retirement Plan in TX ($7.4B); by covered participants it is Learning Care Group Retirement Savings Plan in MI (20,213 participants). Same-state nearby plans are listed separately above.
Closest by plan assets
Nearest other-state filings by tot_assets_eoy ($7.4B here).
- Schlumberger Technology Corporation Savings and Retirement Plan (TX) $7.4B · 16,929
- Emerson Savings Plan (MO) $7.4B · 8,315
- Nestle 401(k) Savings Plan (OH) $7.5B · 30,677
- Trane Technologies Employee Savings Plan (Esp) (NC) $7.5B · 19,674
Similar participant headcount
Nearest other-state filings by covered participants (20,222 participants); asset peers above are excluded.
- Learning Care Group Retirement Savings Plan (MI) 20,213 · 9 off
- Belk 401(k) Savings Plan (NC) 20,210 · 12 off
- Adt Security Corporation Retirement Savings and Investment Plan (FL) 20,206 · 16 off
- Iqvia 401(k) Plan (NC) 20,245 · 23 off
DOL Form 5500 plan year 2024. Asset totals can differ widely at the same headcount; neither axis is a quality rating.