All plans

AON Corporation 401(k): best low-cost funds

AON Savings Plan · Plan #020 · Atlanta, GA

Not financial advice. This page is educational and built from public government filings. Confirm every fund and fee in your plan's official materials before acting.
$6.6Bnet assets (end of plan year)
24,239participants with balances
13,470active participants
2024-12-31plan year end

Suggested simple Boglehead mix

The public data doesn't show enough index funds from this plan to suggest a full mix. A typical Boglehead approach: look in your menu for a US total market or S&P 500 index fund, an international index fund, and a US bond index fund, all with expense ratios under about 0.10%. Or use one low-cost target-date index fund. How the 3-fund portfolio works.

Know this plan's fund menu? Submit it and we'll add a fund-by-fund pick list.

Pooled funds named in the filing (Schedule D)

These are collective trusts and similar pooled funds the plan reported holding. Names that look like index funds are tagged index by keyword, so check them yourself. Mutual funds are not listed by name in the free data.

FundManagerTypePlan's holding
US Equity Market Index Fund F Class indexBlackrock Institutional Trust CO, N.a.Common/collective trust$2.2B
BLK Msci Acwi Ex-us Index Superfund indexBlackrock Institutional Trust CO, N.a.Common/collective trust$513.4M
Pimco Stocks Plus StrategySEI Trust CompanyCommon/collective trust$507.4M
MFO Arrowstreet US Equity CIT CL HGlobal Trust CompanyCommon/collective trust$238.4M
MF0 Blackrock Total Return BND FD JBlackrock Institutional Trust Company, N.a.Common/collective trust$197.8M
Jpmcb Core Diversified Comrcl PrptyJpmorgan Chase Bank, N.a.Common/collective trust$185.1M
US Debt Index Fund F Class indexBlackrock Institutional Trust Company, N.a.Common/collective trust$148.9M
Pgim Fixed Incm PRU Strategic FundPrudential Trust COCommon/collective trust$124.2M
MFO Earnest Partners Smid CAP CoreSEI Trust CompanyCommon/collective trust$114.5M
Capital Group Core Plus Total ReturCapital Bank And Trust CompanyCommon/collective trust$113.0M
Arrowstreet Intl Eqty Acwi Exus CITGlobal Trust Company-arrowstreetCommon/collective trust$105.7M
Ftse Epra Nareit US Real Estate SECBlackrock Institutional Trust CO, N.a.Common/collective trust$97.0M
Pgim Retirement Real Estate Fund IIPgim Retirement Real Estate Fund II LPCommon/collective trust$95.0M
Eaton Vance Trust Comp Multi-assetEaton Vance Trust CompanyCommon/collective trust$91.2M
NT Sub-adv CF Pzena INT VAL ALL CTRReliance Trust CompanyCommon/collective trust$79.2M
Pinestone ASS Mgmt CIT Intl EQ CITSEI Trust CompanyCommon/collective trust$78.8M
Blackrock Msci Acwi ESG Focus Indx indexBlackrock Institutional Trust CO, N.a.Common/collective trust$49.2M
Blackrock Msci Acwi IMI Index FD F indexBlackrock Institutional Trust CO, N.a.Common/collective trust$45.4M
NT Collect Govt Short Term Invt FDNorthern Trust Investments, Inc.Common/collective trust$43.4M
Blackrock US Trsry Infltn Prtct SECBlackrock Institutional Trust CO, N.a.Common/collective trust$31.5M
L&G Developed Mkts Blncd Mlti-factReliance Trust CompanyCommon/collective trust$15.9M
Ssga TR CO Invtfds US High Yield BDState Street Global Advisors Tryst CompanyCommon/collective trust$6.8M
Pimco EmrmrktsfullspectbondcollectrSEI Trust CompanyCommon/collective trust$0
Cardinal Captial Master CollectivSEI Trust CompanyCommon/collective trust$0

How plan assets are invested

Category (Schedule H)AmountShare
Registered investment companies (mutual funds)$362.2M5.5%
Common/collective trusts$5.1B76.9%
Common stock (direct)$392.3M6.0%
Participant loans$25.6M0.4%
Other investments$376.4M5.7%

Fees paid from plan assets

Contract administrator fees$324,611
Investment advisory & management fees$724,729
Other administrative fees$1,948
Total administrative expenses$1.9M

Reported administrative expenses were about 0.029% of average plan assets, or about $77 per participant with a balance. This usually excludes fund expense ratios netted inside mutual funds and trusts.

Source: DOL EFAST2 Form 5500 & Schedules H/D, filing ID 20251007210454NAL0004989073001. EIN 363051915.

Get the low-cost 401(k) newsletter

Occasional notes on finding the cheapest index funds in your 401(k). To join, email us with "Subscribe".