401(k) · DOL Form 5500 · 2023

Hamamatsu Corporation 401(k) Plan

Data updated 2026-08-25

$40M
Total assets Below avg plan size
271
Participants Below avg headcount
83rd
Percentile by assets National rank
$147,736
Avg per participant Above avg balance/head
PlainRetire home → About this data RSS: change history

Official DOL plan name: Hamamatsu Corporation 401(k) Plan · Sponsored by Hamamatsu Corporation · New Jersey · Manufacturing

$40M in assets, 271 participants

Hamamatsu Corporation's Hamamatsu Corporation 401(k) Plan reported $40M in total assets and 271 participants in its 2023 DOL Form 5500 filing, ranking in the 83rd 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.

  • #14,220 in Manufacturing (18,722 peers)

Coverage in New Jersey

Hamamatsu Corporation 401(k) Plan covers 271 participants in New Jersey, about 32% of the average New Jersey filer (state average ~844 per filing). Assets: $40M.

#14,220
in Manufacturing (18,722 peers)
+27.5%
assets growth YoY
0.4×
vs typical plan assets (national mean)

Hamamatsu Corporation 401(k) Plan's outsized position by total assets

Hamamatsu Corporation 401(k) Plan vs every filed plan by assets

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

$40,036,553 Top 17% higher than 83% 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

Hamamatsu Corporation 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. Hamamatsu Corporation 401(k) Plan sits mid-pack in the medium band (271 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Hamamatsu Corporation 401(k) Plan reported net income rose from $4M in the plan year 2022 filing to $9M in the plan year 2023 filing.
  • Hamamatsu Corporation 401(k) Plan end-of-year assets rose from $31M in the plan year 2022 filing to $40M in the plan year 2023 filing.
  • Hamamatsu Corporation 401(k) Plan reported participants rose from 246 in the plan year 2022 filing to 271 in the plan year 2023 filing.

See the national 2022→2023 release diff →

Plan-year Form 5500 strip

Filing strip 132638233 · Hamamatsu Corporation PY 2023 · 401(k)

Hamamatsu Corporation 401(k) Plan · $40M · 271 · 83rd

  • EIN $40M
  • RANK 271
  • PHOTO 83rd
  • IND 401(k)
  • EOY near Southeast Personnel Leasing Retirement Savings Plan
  • 5500 ind #14220

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 Manufacturing retirement plans → · Plans in New Jersey →

Hamamatsu Corporation 401(k) Plan in the asset neighbourhood

Hamamatsu Corporation 401(k) PlanHamamatsu Corporation 401(k)…$40MSoutheast Personnel Leasing Retirement Savings PlanSoutheast Personnel Leasing …$40MMiccosukee Tribe of Indians of Florida 401(k) PlanMiccosukee Tribe of Indians …$40MCorval Group Companies Retirement PlanCorval Group Companies Retir…$40MAm General Hourly Capital Accumulation PlanAm General Hourly Capital Ac…$40M
End-of-year total assets ($M) among Hamamatsu Corporation 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

New Jersey filing particulars

Total Assets (Beginning of Year)$31M
Net Assets (End of Year)$40M
Net Income$9M
Employer EIN132638233
Plan Effective Date2001-10-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Hamamatsu Corporation)

Sponsor-wide plan assets over time

All Hamamatsu Corporation plans reported in each filing year

Latest sponsor-wide plan assets
$160M 37.87270039177636% vs 2022
2024 filing year
$100M$120M$140M$160M$180M 202220232024 $116M $160M ▲ +37.9%
Year Plans Participants Total Assets
2022 3 704 $116M
2023 3 763 $145M
2024 3 781 $160M

Nearby 401(k) Plans in New Jersey

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

Hamamatsu Corporation 401(k) Plan vs. nearby 401(k) plans in New Jersey, assets vs. participants Scatter plot of 6 data points. -50000050000100000150000200000 -1001020304050 Total assets ($B) Participants Hamamatsu Corporation 401(k) Plan, Total assets ($B): 0.040036553 · Participants: 271Hamamatsu Corporation 401(k) PlanJPMorgan Chase 401(k) Savings Plan, Total assets ($B): 44.552237022 · Participants: 176610JPMorgan Chase 401(k) Savings PlanVerizon Savings Plan for Management Employees, Total assets ($B): 27.825640157 · Participants: 78072Verizon Savings Plan for Management EmployeesJohnson and Johnson Savings Plan, Total assets ($B): 22.177853595 · Participants: 41291Johnson and Johnson Savings PlanErnst & Young Retirement Savings Plan, Total assets ($B): 15.543526764 · Participants: 59346Ernst & Young Retirement Savings PlanMerck US Savings Plan, Total assets ($B): 13.424416176 · Participants: 26850Merck US Savings Plan
Hamamatsu Corporation 401(k) Plan vs. nearby 401(k) plans in New Jersey, assets vs. participants
Compare Hamamatsu Corporation 401(k) Plan side-by-side with 3 peers →

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

Outside New Jersey, the nearest 401(k) by assets is Southeast Personnel Leasing Retirement Savings Plan in FL ($40M); by covered participants it is Sellen Construction Co., Inc. 401(k) and Wealthbuilder Retirement Plan in WA (271 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (271 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 Hamamatsu Corporation 401(k) Plan assets move in 2023? ▼
Hamamatsu Corporation 401(k) Plan grew sharply - up 27.5% during 2023, from $31M to $40M. Reported net income was $9M.
How have Hamamatsu Corporation plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Hamamatsu Corporation's sponsor-wide assets grew 37.9%, from $116M to $160M.
Where does Hamamatsu Corporation 401(k) Plan rank by assets among Form 5500 filers? ▼
Hamamatsu Corporation 401(k) Plan ranks in the 83rd percentile by end-of-year assets among 127,072 plans that reported assets for plan year 2023 (in the top quartile of all filed plans by assets).
Which 401(k) plans are similar in size to Hamamatsu Corporation 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is Southeast Personnel Leasing Retirement Savings Plan in FL ($40M, 2,656 participants).
Which 401(k) plans cover a similar participant headcount to Hamamatsu Corporation 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Sellen Construction Co., Inc. 401(k) and Wealthbuilder Retirement Plan in WA (271 participants, $96M 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 132638233.

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.