401(k) · DOL Form 5500 · 2023

Aon Consulting, Inc. 401(k) Plan

Data updated 2026-08-25

$1.7B
Total assets Very large vs avg
25,018
Participants Very large workforce
99th
Percentile by assets National rank
$67,428
Avg per participant Below avg balance/head
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Official DOL plan name: Aon Pooled Employer Plan · Sponsored by Aon Consulting, Inc. · Illinois · Finance & Insurance

$1.7B in assets, 25,018 participants

Aon Consulting, Inc.'s Aon Pooled Employer Plan reported $1.7B in total assets and 25,018 participants in its 2023 DOL Form 5500 filing, ranking in the 99th 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.

  • #8,723 in Finance & Insurance (8,869 peers)

Coverage in Illinois

Aon Pooled Employer Plan covers 25,018 participants in Illinois, 32x the typical Illinois plan (state average ~779 per filing). Assets: $1.7B.

#8,723
in Finance & Insurance (8,869 peers)
+153.8%
assets growth YoY
17×
vs typical plan assets (national mean)

Aon Pooled Employer Plan's outsized position by total assets

Aon Pooled Employer Plan vs every filed plan by assets

End-of-year total assets · plan year 2023 · DOL Form 5500

$1,686,907,060 Top 1% higher than 99% of 127,068 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 2023

Aon Pooled Employer 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. Aon Pooled Employer Plan is a mega filing (25,018 participants), the rightmost band on the breakdown.

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Aon Pooled Employer Plan reported net income rose from -$33M in the plan year 2022 filing to $262M in the plan year 2023 filing.
  • Aon Pooled Employer Plan end-of-year assets rose from $665M in the plan year 2022 filing to $1.7B in the plan year 2023 filing.
  • Aon Pooled Employer Plan reported participants rose from 15,916 in the plan year 2022 filing to 25,018 in the plan year 2023 filing.

See the national 2022→2023 release diff →

EBSA filing schedule strip

Filing strip 222232264 · Aon Consulting, Inc. PY 2023 · 401(k)

Aon Pooled Employer Plan · $1.7B · 25,018 · 99th

  • SCH $1.7B
  • EBSA 25,018
  • PART 99th
  • TYPE 401(k)
  • NET near Arcadis U.S., Inc. Retirement Savings Plan
  • BOOK ind #8723

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 Illinois →

Aon Pooled Employer Plan in the asset neighbourhood

Aon Pooled Employer Plan$1.7BArcadis U.S., Inc. Retirement Savings PlanArcadis U.S., Inc. Retiremen…$1.7BKeurig Dr Pepper 401(k) Plan$1.7BFm Global 401(k) Savings Plan$1.7BThe Williams Investment Plus PlanThe Williams Investment Plus…$1.7B
End-of-year total assets ($B) among Aon Pooled Employer Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Illinois filing particulars

Total Assets (Beginning of Year)$665M
Net Assets (End of Year)$1.7B
Net Income$262M
Employer EIN222232264
Plan Effective Date2021-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Aon Consulting, Inc.)

Sponsor-wide plan assets over time

All Aon Consulting, Inc. plans reported in each filing year

Latest sponsor-wide plan assets
$3.1B 372.31886497181915% vs 2022
2024 filing year
$0B$1B$2B$3B$4B 202220232024 $0.66B $3.14B ▲ +375.8%
Year Plans Participants Total Assets
2022 1 15,916 $665M
2023 1 25,018 $1.7B
2024 1 48,473 $3.1B

Nearby 401(k) Plans in Illinois

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

Aon Pooled Employer Plan vs. nearby 401(k) plans in Illinois, assets vs. participants Scatter plot of 6 data points. 050000100000150000200000250000 05101520 Total assets ($B) Participants Aon Pooled Employer Plan, Total assets ($B): 1.68690706 · Participants: 25018Aon Pooled Employer PlanAccenture United States 401(k) Match Savings Plan, Total assets ($B): 17.594548115 · Participants: 69974Accenture United States 401(k) Match Savings PlanState Farm 401(k) Savings Plan, Total assets ($B): 16.935002041 · Participants: 60246State Farm 401(k) Savings PlanAbbott Laboratories Stock Retirement Plan, Total assets ($B): 14.496191 · Participants: 38012Abbott Laboratories Stock Retirement PlanUnited Airlines Pilot Retirement Account Plan, Total assets ($B): 14.367975914 · Participants: 14959United Airlines Pilot Retirement Account PlanWalgreens Retirement Savings Plan, Total assets ($B): 13.444551767 · Participants: 235331Walgreens Retirement Savings Plan
Aon Pooled Employer Plan vs. nearby 401(k) plans in Illinois, assets vs. participants
Compare Aon Pooled Employer Plan side-by-side with 3 peers →

Scale composition for Aon Pooled Employer Plan

Aon Pooled Employer Plan reports $1.7B in end-of-year assets across 25,018 participants (0.014% of the $12.3T held by all Form 5500 filers in the national rollup , and 0.027% of 93,925,755 covered participants) - about $67,428 per participant (49% of the national average assets-per-participant) . Net income for plan year 2023 was $262M.

This plan identity (EIN 222232264, plan #001) has 3 Form 5500 filings on file from 2022 to 2024 , with end-of-year assets moving from $665M to $3.1B (+372.3%) while covered participants moved from 15,916 to 48,473 . Single-year sparse filers cannot show that trail.

Plan year Participants EOY assets Filing
2022 15,916 $665M Open filing
2023 25,018 $1.7B This page
2024 · index core 48,473 $3.1B Open filing

The same sponsor also keeps 1 other index-core plan on PlainRetire:

Aon Pooled Employer Plan's out-of-state 401(k) peers by assets and headcount

Outside Illinois, the nearest 401(k) by assets is Arcadis U.S., Inc. Retirement Savings Plan in CO ($1.7B); by covered participants it is Kwik Trip Profit Sharing 401(k) Plan in WI (25,121 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($1.7B here).

Similar participant headcount

Nearest other-state filings by covered participants (25,018 participants); asset peers above are excluded.

DOL Form 5500 plan year 2023. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did Aon Pooled Employer Plan assets move in 2023? ▼
Aon Pooled Employer Plan surged - up 153.8% during 2023, from $665M to $1.7B. Reported net income was $262M.
How have Aon Consulting, Inc. plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Aon Consulting, Inc.'s sponsor-wide assets grew 372.3%, from $665M to $3.1B.
Where does Aon Pooled Employer Plan rank by assets among Form 5500 filers? ▼
Aon Pooled Employer Plan ranks in the 99th percentile by end-of-year assets among 127,072 plans that reported assets for plan year 2023 (among the largest 1% of all filed plans).
Which 401(k) plans are similar in size to Aon Pooled Employer Plan? ▼
Among 401(k) plans in other states, the closest by assets is Arcadis U.S., Inc. Retirement Savings Plan in CO ($1.7B, 5,491 participants).
Which 401(k) plans cover a similar participant headcount to Aon Pooled Employer Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Kwik Trip Profit Sharing 401(k) Plan in WI (25,121 participants, $926M in assets).

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2023.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 222232264.

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.