401(k) · DOL Form 5500 · 2023

Arup US, Inc. 401(k) Plan

Data updated 2026-08-25

$606M
Total assets Above avg plan size
1,445
Participants Near avg headcount
98th
Percentile by assets National rank
$419,502
Avg per participant High balance/head
PlainRetire home → About this data RSS: change history

Official DOL plan name: Arup US Retirement Savings Plan · Sponsored by Arup US, Inc. · California · Professional & Technical Services

$606M in assets, 1,445 participants

Arup US, Inc.'s Arup US Retirement Savings Plan reported $606M in total assets and 1,445 participants in its 2023 DOL Form 5500 filing, ranking in the 98th 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.

  • #20,024 in Professional & Technical Services (20,321 peers)

Coverage in California

Arup US Retirement Savings Plan covers 1,445 participants in California, 2.3x the typical California plan (state average ~630 per filing). Assets: $606M.

#20,024
in Professional & Technical Services (20,321 peers)
+26.2%
assets growth YoY
6.1×
vs typical plan assets (national mean)

Arup US Retirement Savings Plan's outsized position by total assets

Arup US Retirement Savings Plan vs every filed plan by assets

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

$606,180,752 Top 2% higher than 98% 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

Arup US Retirement Savings Plan's large-plan peer group by participant headcount

Plan-year 2023 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Arup US Retirement Savings Plan lands in the large band (1,445 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Arup US Retirement Savings Plan reported net income rose from -$103M in the plan year 2022 filing to $126M in the plan year 2023 filing.
  • Arup US Retirement Savings Plan end-of-year assets rose from $480M in the plan year 2022 filing to $606M in the plan year 2023 filing.
  • Arup US Retirement Savings Plan reported participants rose from 1,275 in the plan year 2022 filing to 1,445 in the plan year 2023 filing.

See the national 2022→2023 release diff →

Plan-year Form 5500 strip

Filing strip 362711213 · Arup US, Inc. PY 2023 · 401(k)

Arup US Retirement Savings Plan · $606M · 1,445 · 98th

  • VS-ST $606M
  • VS-ST 1,445
  • VS-ST 98th
  • VS-ST 401(k)
  • VS-ST near National Basketball Association Players' 401(k) Savings Plan
  • VS-ST ind #20024

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 Professional & Technical Services retirement plans → · Plans in California →

Arup US Retirement Savings Plan in the asset neighbourhood

Constellis 401(k) Plan$607MArup US Retirement Savings PlanArup US Retirement Savings P…$606MNational Basketball Association Players' 401(k) Savings PlanNational Basketball Associat…$606MA. T. Kearney, Inc. 401(k) and Profit Sharing Retirement PlanA. T. Kearney, Inc. 401(k) a…$605MJohnson Controls Select Hourly Retirement Savings and Investment PlanJohnson Controls Select Hour…$605M
End-of-year total assets ($M) among Arup US Retirement Savings Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

California filing particulars

Total Assets (Beginning of Year)$480M
Net Assets (End of Year)$606M
Net Income$126M
Employer EIN362711213
Plan Effective Date2000-09-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Arup US, Inc.)

Sponsor-wide plan assets over time

All Arup US, Inc. plans reported in each filing year

Latest sponsor-wide plan assets
$723M 50.5493114683437% vs 2022
2024 filing year
$400M$500M$600M$700M$800M 202220232024 $480M $723M ▲ +50.5%
Year Plans Participants Total Assets
2022 1 1,275 $480M
2023 1 1,445 $606M
2024 1 1,487 $723M

Nearby 401(k) Plans in California

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

Arup US Retirement Savings Plan vs. nearby 401(k) plans in California, assets vs. participants Scatter plot of 6 data points. -50000050000100000150000200000250000 -200204060 Total assets ($B) Participants Arup US Retirement Savings Plan, Total assets ($B): 0.606180752 · Participants: 1445Arup US Retirement Savings PlanWells Fargo & Company 401(k) Plan, Total assets ($B): 51.831350351 · Participants: 193919Wells Fargo & Company 401(k) PlanGoogle LLC 401(k) Savings Plan, Total assets ($B): 39.047152408 · Participants: 122867Google LLC 401(k) Savings PlanOracle Corporation 401(k) Savings and Investment Plan, Total assets ($B): 26.320437734 · Participants: 63105Oracle Corporation 401(k) Savings and Investment PlanIntel 401(k) Savings Plan, Total assets ($B): 22.17918189 · Participants: 59863Intel 401(k) Savings PlanApple 401(k) Plan, Total assets ($B): 19.779511539 · Participants: 106111Apple 401(k) Plan
Arup US Retirement Savings Plan vs. nearby 401(k) plans in California, assets vs. participants
Compare Arup US Retirement Savings Plan side-by-side with 3 peers →

Arup US Retirement Savings Plan's out-of-state 401(k) peers by assets and headcount

Outside California, the nearest 401(k) by assets is National Basketball Association Players' 401(k) Savings Plan in NJ ($606M); by covered participants it is First Commonwealth Financial Corporation 401(k) Retirement Savings and Investment Plan in PA (1,445 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (1,445 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 Arup US Retirement Savings Plan assets move in 2023? ▼
Arup US Retirement Savings Plan grew sharply - up 26.2% during 2023, from $480M to $606M. Reported net income was $126M.
How have Arup US, Inc. plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Arup US, Inc.'s sponsor-wide assets grew 50.5%, from $480M to $723M.
Where does Arup US Retirement Savings Plan rank by assets among Form 5500 filers? ▼
Arup US Retirement Savings Plan ranks in the 98th percentile by end-of-year assets among 127,072 plans that reported assets for plan year 2023 (in the top 5% of all filed plans by assets).
Which 401(k) plans are similar in size to Arup US Retirement Savings Plan? ▼
Among 401(k) plans in other states, the closest by assets is National Basketball Association Players' 401(k) Savings Plan in NJ ($606M, 506 participants).
Which 401(k) plans cover a similar participant headcount to Arup US Retirement Savings Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is First Commonwealth Financial Corporation 401(k) Retirement Savings and Investment Plan in PA (1,445 participants, $154M 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 362711213.

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.