401(k) · DOL Form 5500 · 2024

Rock Holdings, Inc. 401(k) Plan

Data updated 2026-08-06

$2.2B
Total assets: 15,298
Participants: 99th
Percentile by assets: $145,612
Avg per participant

Official DOL plan name: Rock Holdings & Associated Companies Savings Plan · Sponsored by Rock Holdings, Inc. · Michigan · Finance & Insurance

$2.2B in assets, 15,298 participants

Rock Holdings, Inc.'s Rock Holdings & Associated Companies Savings Plan reported $2.2B in total assets and 15,298 participants in its 2024 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.

99th percentile by assets (of 116,472 plans)

Coverage in Michigan

Rock Holdings & Associated Companies Savings Plan covers 15,298 participants in Michigan, 24x the typical Michigan plan (state average ~632 per filing). Assets: $2.2B.

$2.2B
total plan assets (2024 EOY): 15,298
covered participants: 99th
percentile by assets (of 116,472 plans): $145,612
avg assets per participant

Rock Holdings & Associated Companies Savings Plan reported participants fell from 18,984 in the plan year 2023 filing to 15,298 in the plan year 2024 filing.
Rock Holdings & Associated Companies Savings Plan end-of-year assets rose from $1.9B in the plan year 2023 filing to $2.2B in the plan year 2024 filing.
Rock Holdings & Associated Companies Savings Plan reported net income rose from $290M in the plan year 2023 filing to $302M in the plan year 2024 filing.

See the national 2023→2024 release diff →

State

Michigan

Industry

Finance & Insurance

Participants vs Michigan filers

In Michigan, the average filing covers about 632 participants across 3,963 plans. Rock Holdings & Associated Companies Savings Plan reports 15,298 participants - 24x that state average ($2.2B EOY assets).

Michigan filing particulars

Total Assets (Beginning of Year)	$1.9B
Net Assets (End of Year)	$2.2B
Net Income	$302M
Employer EIN	510415135
Plan Effective Date	2002-08-01
Filing Status	FILING RECEIVED

Sponsor Plan History (Rock Holdings, Inc.)

Total plan assets by year, all Rock Holdings, Inc. plans on file

Year	Plans	Participants	Total Assets
2022	1	27,216	$1.6B
2023	1	18,984	$1.9B
2024	1	15,298	$2.2B

Nearby 401(k) Plans in Michigan

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

Rock Holdings & Associated Companies Savings Plan vs. nearby 401(k) plans in Michigan, assets vs. participants

General Motors Retirement Savings Plan for Salaried Employees in the United States $23.1B · 43,053
Ford Motor Co. Savings and Stock Investment Plan for Salaried Employees $17.3B · 31,790
The Dow Chemical Company Employees' Savings Plan $10.8B · 17,128
The General Motors Personal Savings Plan for Hourly-Rate Employees in the United States $9.6B · 42,513
Ford Motor Co. Tax-Efficient Savings Plan for Hourly Employees $8.3B · 60,497

Compare Rock Holdings & Associated Companies Sav… side-by-side with 3 peers →

Similar-Sized 401(k) Plans Nationally

401(k) plans in other states closest to Rock Holdings & Associated Companies Savings Plan by total assets, not by location.

Park Nicollet Health Services 401(k) Retirement Savings Plan (MN) $2.2B · 8,360
Empower Retirement, LLC 401(k) Savings Plan (CO) $2.2B · 10,185
The University of Vermont Medical Center 403(b) Plan (VT) $2.2B · 12,486
The Mgm Resorts 401(k) Savings Plan (NV) $2.2B · 37,719

Frequently Asked Questions

How did Rock Holdings & Associated Companies Savings Plan assets move in 2024? ▼

Rock Holdings & Associated Companies Savings Plan grew sharply - up 15.7% during 2024, from $1.9B to $2.2B. Reported net income was $302M.

How have Rock Holdings, Inc. plan assets changed over time? ▼

Across 3 plan years on file (2022-2024), Rock Holdings, Inc.'s sponsor-wide assets grew 36.2%, from $1.6B to $2.2B.

Where does Rock Holdings & Associated Companies Savings Plan rank by assets among Form 5500 filers? ▼

Rock Holdings & Associated Companies Savings Plan ranks in the 99th percentile by end-of-year assets among 116,472 plans that reported assets for plan year 2024 (among the largest 1% of all filed plans).

Which 401(k) plans are similar in size to Rock Holdings & Associated Companies Savings Plan? ▼

Among 401(k) plans in other states, the closest by assets is Park Nicollet Health Services 401(k) Retirement Savings Plan in MN ($2.2B, 8,360 participants).

Next read for Rock Holdings & Associated Companies Sav…

Filing takeaways

Ways to act on Rock Holdings & Associated Companies Savings Plan's numbers.

By total assets, Rock Holdings & Associated Companies Savings Plan ranks among the largest 1% of all filed plans. See the largest plans
Compare it side-by-side against 3 similar 401(k) plans in Michigan. Compare plans
Rock Holdings, Inc.'s sponsor-wide assets have grown 36.2% since 2022 across 3 plan years on file. More Finance & Insurance plans

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2024.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 510415135.

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.