Defined Benefit (Pension) · DOL Form 5500 · 2023

Aon Corporation Pension Plan

Data updated 2026-08-25

$1.6B
Total assets Very large vs avg
1,806
Participants Near avg headcount
99th
Percentile by assets National rank
$860,023
Avg per participant High balance/head
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Official DOL plan name: Aon Retirement Pension Plan · Sponsored by Aon Corporation · Georgia · Finance & Insurance

$1.6B in assets, 1,806 participants

Aon Corporation's Aon Retirement Pension Plan reported $1.6B in total assets and 1,806 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.

  • #8,715 in Finance & Insurance (8,869 peers)

Where Aon Retirement Pension Plan sits by assets

Aon Retirement Pension Plan sits among the largest 1% of all filed plans, $1.6B for 1,806 participants (~$860,023/participant), up 2.8% in 2023.

#8,715
in Finance & Insurance (8,869 peers)
+2.8%
assets growth YoY
16×
vs typical plan assets (national mean)

Aon Retirement Pension Plan's outsized position by total assets

Aon Retirement Pension Plan vs every filed plan by assets

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

$1,553,201,821 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 Retirement Pension Plan's large-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 Retirement Pension Plan lands in the large band (1,806 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Aon Retirement Pension Plan reported net income rose from -$884M in the plan year 2022 filing to $34M in the plan year 2023 filing.
  • Aon Retirement Pension Plan reported participants fell from 1,928 in the plan year 2022 filing to 1,806 in the plan year 2023 filing.
  • Aon Retirement Pension Plan end-of-year assets rose from $1.5B in the plan year 2022 filing to $1.6B in the plan year 2023 filing.

See the national 2022→2023 release diff →

EBSA filing schedule strip

Filing strip 363051915 · Aon Corporation PY 2023 · Defined Benefit (Pension)

Aon Retirement Pension Plan · $1.6B · 1,806 · 99th

  • NET $1.6B
  • BOOK 1,806
  • VS-ST 99th
  • BOY Defined Benefit (Pension)
  • SCH near S.E.I.U. National Industry Pension Fund
  • EBSA ind #8715

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 Georgia →

Aon Retirement Pension Plan in the asset neighbourhood

S.E.I.U. National Industry Pension FundS.E.I.U. National Industry P…$1.6BVisa Retirement Plan$1.6BMain Line Health, Inc. Retirement Income PlanMain Line Health, Inc. Retir…$1.6BAon Retirement Pension Plan$1.6BPipeline Industry Pension FundPipeline Industry Pension Fu…$1.6B
End-of-year total assets ($B) among Aon Retirement Pension Plan and nearest nationwide Defined Benefit (Pension) peers. Source: DOL Form 5500 plan year 2023.

Scale-class filing particulars (2023)

Total Assets (Beginning of Year)$1.5B
Net Assets (End of Year)$1.5B
Net Income$34M
Employer EIN363051915
Plan Effective Date2020-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Aon Corporation)

Sponsor-wide plan assets over time

All Aon Corporation plans reported in each filing year

Latest sponsor-wide plan assets
$8.2B 17.932500979716092% vs 2022
2024 filing year
$6.5B$7B$7.5B$8B$8.5B 202220232024 $6.93B $8.17B ▲ +17.9%
Year Plans Participants Total Assets
2022 3 14,536 $6.9B
2023 2 15,754 $7.8B
2024 2 15,620 $8.2B

Nearby Defined Benefit (Pension) Plans in Georgia

Peer Defined Benefit (Pension) plans, same state, same plan type, ranked by total assets.

Aon Retirement Pension Plan vs. nearby Defined Benefit (Pension) plans in Georgia, assets vs. participants Scatter plot of 6 data points. -50000050000100000150000200000 05101520 Total assets ($B) Participants Aon Retirement Pension Plan, Total assets ($B): 1.553201821 · Participants: 1806Aon Retirement Pension PlanThe Southern Company Pension Plan, Total assets ($B): 15.596954837 · Participants: 25241The Southern Company Pension PlanUPS/Ibt Full-Time Employee Pension Plan, Total assets ($B): 12.285105757 · Participants: 70241UPS/Ibt Full-Time Employee Pension PlanUPS Pension Plan, Total assets ($B): 9.733665646 · Participants: 153217UPS Pension PlanCox Enterprises, Inc. Pension Plan, Total assets ($B): 7.396009274 · Participants: 24023Cox Enterprises, Inc. Pension PlanDelta Retirement Plan, Total assets ($B): 7.309889555 · Participants: 15601Delta Retirement Plan
Aon Retirement Pension Plan vs. nearby Defined Benefit (Pension) plans in Georgia, assets vs. participants
Compare Aon Retirement Pension Plan side-by-side with 3 peers →

Aon Retirement Pension Plan's out-of-state Defined Benefit (Pension) peers by assets and headcount

Outside Georgia, the nearest Defined Benefit (Pension) by assets is S.E.I.U. National Industry Pension Fund in DC ($1.6B); by covered participants it is Detroit Medical Center Consolidated Pension Plan in MI (1,803 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($1.6B here).

Similar participant headcount

Nearest other-state filings by covered participants (1,806 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 Retirement Pension Plan assets move in 2023? ▼
Aon Retirement Pension Plan edged up modestly - up 2.8% during 2023, from $1.5B to $1.6B. Reported net income was $34M.
How have Aon Corporation plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Aon Corporation's sponsor-wide assets grew 17.9%, from $6.9B to $8.2B.
Where does Aon Retirement Pension Plan rank by assets among Form 5500 filers? ▼
Aon Retirement Pension 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 Defined Benefit (Pension) plans are similar in size to Aon Retirement Pension Plan? ▼
Among Defined Benefit (Pension) plans in other states, the closest by assets is S.E.I.U. National Industry Pension Fund in DC ($1.6B, 89,257 participants).
Which Defined Benefit (Pension) plans cover a similar participant headcount to Aon Retirement Pension Plan? ▼
Among Defined Benefit (Pension) plans in other states, the closest by covered participants is Detroit Medical Center Consolidated Pension Plan in MI (1,803 participants, $611M 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 363051915.

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.