401(k) · DOL Form 5500 · 2024
Rock Holdings, Inc. 401(k) Plan
Data updated 2026-08-25
- $2.2B
- Total assets Very large vs avg
- 15,298
- Participants Very large workforce
- 99th
- Percentile by assets National rank
- $145,612
- Avg per participant Above avg balance/head
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.
- #8,424 in Finance & Insurance (8,549 peers)
Coverage in Michigan
Rock Holdings & Associated Companies Savings Plan covers 15,298 participants in Michigan, 24x the typical Michigan plan (state average ~638 per filing). Assets: $2.2B.
- #8,424
- in Finance & Insurance (8,549 peers)
- +15.7%
- assets growth YoY
- 22×
- vs typical plan assets (national mean)
Rock Holdings & Associated Companies Savings Plan's outsized position by total assets
Rock Holdings & Associated Companies Savings Plan vs every filed plan by assets
End-of-year total assets · plan year 2024 · DOL Form 5500
$2,227,575,094 Top 1% higher than 99% of 123,620 filed plans
Dashed line + filled bar = this entry, among filed plans.
Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2024
Rock Holdings & Associated Companies Savings Plan's mega-plan peer group by participant headcount
Plan-year 2024 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Rock Holdings & Associated Companies Savings Plan is a mega filing (15,298 participants), the rightmost band on the breakdown.
What changed between DOL Form 5500 filings
plan year 2023 → plan year 2024
- 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.
Form 5500 schedule snapshot
Filing strip 510415135 · Rock Holdings, Inc. PY 2024 · 401(k)
Rock Holdings & Associated Companies Savings Plan · $2.2B · 15,298 · 99th
- PART $2.2B
- PART 15,298
- PART 99th
- PART 401(k)
- PART near Park Nicollet Health Services 401(k) Retirement Savings Plan
- PART ind #8424
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 Michigan →
Rock Holdings & Associated Companies Savings Plan in the asset neighbourhood
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.)
Sponsor-wide plan assets over time
All Rock Holdings, Inc. plans reported in each filing year
- Latest sponsor-wide plan assets
- $2.2B 36.172161579248154% vs 2022
- 2024 filing year
| 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.
- 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
Scale composition for Rock Holdings & Associated Companies Savings Plan
Rock Holdings & Associated Companies Savings Plan reports $2.2B in end-of-year assets across 15,298 participants (0.018% of the $12.3T held by all Form 5500 filers in the national rollup , and 0.016% of 93,925,755 covered participants) - about $145,612 per participant (1.1x the national average assets-per-participant) . Net income for plan year 2024 was $302M.
This plan identity (EIN 510415135, plan #005) has 3 Form 5500 filings on file from 2022 to 2024 , with end-of-year assets moving from $1.6B to $2.2B (+36.2%) while covered participants moved from 27,216 to 15,298 . Single-year sparse filers cannot show that trail.
| Plan year | Participants | EOY assets | Filing |
|---|---|---|---|
| 2022 | 27,216 | $1.6B | Open filing |
| 2023 | 18,984 | $1.9B | Open filing |
| 2024 · index core | 15,298 | $2.2B | This page |
Rock Holdings & Associated Companies Savings Plan's out-of-state 401(k) peers by assets and headcount
Outside Michigan, the nearest 401(k) by assets is Park Nicollet Health Services 401(k) Retirement Savings Plan in MN ($2.2B); by covered participants it is Halliburton Retirement and Savings Plan in TX (15,306 participants). Same-state nearby plans are listed separately above.
Closest by plan assets
Nearest other-state filings by tot_assets_eoy ($2.2B here).
- 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
Similar participant headcount
Nearest other-state filings by covered participants (15,298 participants); asset peers above are excluded.
- Halliburton Retirement and Savings Plan (TX) 15,306 · 8 off
- General Mills 401(k) Plan (MN) 15,321 · 23 off
- Southern District Ubc Defined Contribution Fund (TN) 15,271 · 27 off
- First-Citizens Bank & Trust Company 401(k) Plan (NC) 15,251 · 47 off
DOL Form 5500 plan year 2024. Asset totals can differ widely at the same headcount; neither axis is a quality rating.