401(k) · DOL Form 5500 · 2023

Diamond Materials LLC 401(k) Plan

Data updated 2026-08-25

$10M
Total assets Small plan by assets
304
Participants Below avg headcount
58th
Percentile by assets National rank
$31,736
Avg per participant Low balance/head
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Official DOL plan name: Diamond Materials 401(k) Plan · Sponsored by Diamond Materials LLC · Delaware · Construction

$10M in assets, 304 participants

Diamond Materials LLC's Diamond Materials 401(k) Plan reported $10M in total assets and 304 participants in its 2023 DOL Form 5500 filing, ranking in the 58th 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.

  • #5,072 in Construction (9,030 peers)

Diamond Materials LLC multi-year trail

Diamond Materials LLC's plans moved +44.7% in assets from 2022 to 2024; this filing shows Diamond Materials 401(k) Plan at $10M / 304 participants.

#5,072
in Construction (9,030 peers)
+21.5%
assets growth YoY

Diamond Materials 401(k) Plan's mid-pack asset rank among Construction and all filers

Diamond Materials 401(k) Plan vs every filed plan by assets

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

$9,647,793 Top 42% higher than 58% 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

Diamond Materials 401(k) Plan among mid-size filed plans by headcount

Plan-year 2023 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Diamond Materials 401(k) Plan sits mid-pack in the medium band (304 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Diamond Materials 401(k) Plan reported net income rose from -$791K in the plan year 2022 filing to $2M in the plan year 2023 filing.
  • Diamond Materials 401(k) Plan end-of-year assets rose from $8M in the plan year 2022 filing to $10M in the plan year 2023 filing.
  • Diamond Materials 401(k) Plan reported participants rose from 271 in the plan year 2022 filing to 304 in the plan year 2023 filing.

See the national 2022→2023 release diff →

Form 5500 schedule snapshot

Filing strip 510373659 · Diamond Materials LLC PY 2023 · 401(k)

Diamond Materials 401(k) Plan · $10M · 304 · 58th

  • EOY $10M
  • EOY 304
  • EOY 58th
  • EOY 401(k)
  • EOY near Eyesight Holding Co., LLC 401(k) Plan
  • EOY ind #5072

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 Construction retirement plans → · Plans in Delaware →

Diamond Materials 401(k) Plan in the asset neighbourhood

Diamond Materials 401(k) Plan$10MEyesight Holding Co., LLC 401(k) PlanEyesight Holding Co., LLC 40…$10MTok America 401(k) Savings PlanTok America 401(k) Savings P…$10MAlpha Teknova Inc. 401(k) Profit Sharing PlanAlpha Teknova Inc. 401(k) Pr…$10MThe Union League Club 401(k) PlanThe Union League Club 401(k)…$10M
End-of-year total assets ($M) among Diamond Materials 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Diamond Materials LLC multi-year asset trail

Sponsor-wide plan assets over time

All Diamond Materials LLC plans reported in each filing year

Latest sponsor-wide plan assets
$11M 44.723177292622154% vs 2022
2024 filing year
$6M$8M$10M$12M 202220232024 $7.94M $11.5M ▲ +44.8%
Year Plans Participants Total Assets
2022 1 271 $8M
2023 1 304 $10M
2024 1 292 $11M

Diamond Materials LLC filing trail (2023)

Total Assets (Beginning of Year)$8M
Net Assets (End of Year)$10M
Net Income$2M
Employer EIN510373659
Plan Effective Date1997-03-01
Filing StatusFILING RECEIVED

Nearby 401(k) Plans in Delaware

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

Diamond Materials 401(k) Plan vs. nearby 401(k) plans in Delaware, assets vs. participants Scatter plot of 6 data points. -5000050001000015000 -202468 Total assets ($B) Participants Diamond Materials 401(k) Plan, Total assets ($B): 0.009647793 · Participants: 304Diamond Materials 401(k) PlanAstrazeneca Savings and Security Plan, Total assets ($B): 7.59933241 · Participants: 13734Astrazeneca Savings and Security PlanRetirement Savings Plan, Total assets ($B): 6.839304585 · Participants: 9968Retirement Savings PlanDupont Retirement Savings Plan, Total assets ($B): 3.237107237 · Participants: 9918Dupont Retirement Savings PlanWl Gore & Associates, Inc. 401(k) Plan, Total assets ($B): 1.797467724 · Participants: 8557Wl Gore & Associates, Inc. 401(k) PlanAshland Employee Savings Plan, Total assets ($B): 1.267144025 · Participants: 1647Ashland Employee Savings Plan
Diamond Materials 401(k) Plan vs. nearby 401(k) plans in Delaware, assets vs. participants
Compare Diamond Materials 401(k) Plan side-by-side with 3 peers →

Diamond Materials 401(k) Plan's out-of-state 401(k) peers by assets and headcount

Outside Delaware, the nearest 401(k) by assets is Eyesight Holding Co., LLC 401(k) Plan in TX ($10M); by covered participants it is Kemba Financial Credit Union, Inc. 401(k) Profit Sharing Plan in OH (304 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($10M here).

Similar participant headcount

Nearest other-state filings by covered participants (304 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 Diamond Materials 401(k) Plan assets move in 2023? ▼
Diamond Materials 401(k) Plan grew sharply - up 21.5% during 2023, from $8M to $10M. Reported net income was $2M.
How have Diamond Materials LLC plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Diamond Materials LLC's sponsor-wide assets grew 44.7%, from $8M to $11M.
Which 401(k) plans are similar in size to Diamond Materials 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is Eyesight Holding Co., LLC 401(k) Plan in TX ($10M, 840 participants).
Which 401(k) plans cover a similar participant headcount to Diamond Materials 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Kemba Financial Credit Union, Inc. 401(k) Profit Sharing Plan in OH (304 participants, $27M 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 510373659.

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.