401(k) Monitor

Missouri 401(k) plans

1,025

Large 401(k) plans headquartered in Missouri are in 401(k) Monitor’s published set, holding $137.9B in total, led on headcount by O'Reilly Automotive, Inc. Profit Sharing And Savings Plan with 80,513 active participants. Computed from DOL Form 5500 filings, plan years 2023–2025.

State means the sponsor’s address on the filing, not where employees work. Our published set covers 57,824 of the 57,824 large plans in the form-year-2024 DOL EFAST2 bulk data, so this is the largest-plan end of Missouri, not a census of it.

47 of the biggest 401(k) plans headquartered in Missouri

The plans this site submits to search engines come first, then the rest; each group is ranked by active participants, the people still building up a balance. plan years 2023–2025, DOL EFAST2 bulk data. Assets in USD. Every plan links to its full fact page.
#PlanCityActive participantsAssets
1O'Reilly Automotive, Inc. Profit Sharing And Savings PlanSpringfield80,513$1.9B
2Enterprise Holdings Retirement Savings PlanSaint Louis71,379$6.5B
3GardaWorld Security Services U.S. 401(k) PlanSaint Louis56,931$25.6M
4Centene Management Corporation Retirement PlanSt. Louis54,939$4.7B
5Edward D. Jones & Co. Profit Sharing And 401(k) PlanSt. Louis50,491$12.4B
6Advantage 401(k) Savings PlanClayton34,861$764.6M
7BJC 401(k) PlanSt. Louis32,079$2.3B
8Panera Bread Company 401(k) Retirement Savings PlanFenton25,092$285.0M
9H & R Block Retirement Savings PlanKansas City22,188$1.1B
10Bayer Corporation Savings And Retirement PlanSt Louis17,218$10.8B
11Emerson Savings PlanClayton14,639$7.4B
12Saint Luke's 403(b) PlanKansas City13,418$960.9M
13Saint Luke's Retirement Balance And Matching PlanKansas City13,255$491.8M
14Schnucks Pay Deferral Plan-30St. Louis12,661$150.1M
15Burns & Mcdonnell, Inc. 401(k) Savings PlanKansas City10,884$2.1B
16Tutera Group Inc. 401(k) Retirement PlanKansas City10,344$10.7M
17Ameren Corporation Savings Investment PlanSt. Louis9,085$3.2B
18The Profit Sharing And Savings Plan Of Graybar Electric Company, Inc.St. Louis8,694$2.0B
19Stifel Financial Profit Sharing 401(k) PlanSt Louis8,303$2.3B
20World Wide Technology, LLC Employee Salary Deferral Retirement ProgramSt. Louis8,069$1.1B
21Eyecare Partners 401(k) PlanBallwin7,775$511.8M
22Lockton, Inc. 401(k) PlanKansas City7,058$1.4B
23Dot Holdings Co 401(k) And Profit Sharing PlanChesterfield7,017$673.8M
24Hntb Ownership PlanKansas City6,881$2.2B
25Hntb Retirement And Savings PlanKansas City6,881$623.0M
26Olin Corporation Retirement Savings PlanClayton6,731$1.4B
27Post Holdings, Inc. Savings Investment PlanSt Louis6,527$1.1B
28National Beef Union 401(k) PlanKansas City5,980$23.8M
29Drury Team Member Savings PlanSt. Louis5,819$117.1M
30Herschend Family Entertainment Profit Sharing & 401(k) PlanBranson5,734$159.3M
31Core & Main 401(k) Retirement PlanSt. Louis5,648$500.4M
32Barry-Wehmiller Companies' 401(k) Retirement Savings PlanSt. Louis5,631$1.0B
33Hamra Enterprises Employees 401(k) PlanSpringfield5,603$22.6M
34Bunzl USA, LLC Deferred Savings PlanSt. Louis5,596$942.3M
35Mccarthy Employee Retirement Savings PlanSt. Louis5,531$701.1M
36Magellan Health, Inc. Retirement Savings PlanMaryland Heights5,451$656.3M
374m Building Solutions Retirement Savings PlanSt. Louis5,447$5.7M
38Equipmentshare's Retirement Savings PlanColumbia5,272$80.3M
39Penmac Staffing Services 401(k) Retirement Savings PlanSpringfield5,148$4.8M
40Business Performance Savings Plan Of Hallmark Cards, IncorporatedKansas City5,013$2.0B
41Compass Health, Inc. 401(k) PlanClinton5,000$211.5M
42Tkc Holdings, Inc. Retirement PlanSt. Louis4,897$281.9M
43Leggett & Platt, Incorporated 401(k) Plan And Trust AgreementCarthage4,880$374.5M
44Commerce Bancshares, Inc. Participating Investment PlanSt. Louis4,874$1.1B
45Mosaic Health System 401(k) Retirement PlanSt. Joseph4,771$453.2M
46Evergy, Inc. 401(k) Savings PlanKansas City4,722$1.5B
47Nidec Motor Corporation Employee Savings Investment PlanSt. Louis4,659$649.9M

Every Missouri plan, by size

The table above is the top of the list. These 6 pages hold all 1,025 plans on file from Missouri, split by how many people are in them, each ranked by active participants.

401(k) fees in Missouri vs the national median

Plan-paid administrative cost per participant, plan years 2023–2025 Form 5500 filings. Medians over our published set, not the full universe.
Missouri medianAcross the 985 Missouri plans in our set with usable fee data.$132.02 per participant
National medianAcross 54,783 published plans with usable fee data.$122.17 per participant
Difference$9.85 above the national median

Plan-paid means fees the plan itself reports on Schedule H; many employers pay providers directly, which a filing reports as $0. How to judge your own plan: are your 401(k) fees high?

Missouri employers with a match dossier

These Missouri-headquartered plans also file an SEC Form 11-K, so the employer’s match formula, vesting and eligibility are extracted on a company page.

Cite: 401(k) Monitor, “Missouri 401(k) plans: largest plans and fees”, computed from DOL EFAST2 Form 5500 bulk data, plan years 2023–2025, published set of 57,824 plans, data as of July 28, 2026.