401(k) · DOL Form 5500 · 2023

American Society for Radiation Oncology 401(k) Plan

Data updated 2026-08-25

$23M
Total assets Small plan by assets
77
Participants Small participant base
75th
Percentile by assets National rank
$296,311
Avg per participant High balance/head
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Official DOL plan name: Astro 401(k) Plan · Sponsored by American Society for Radiation Oncology · Virginia · Other Services

$23M in assets, 77 participants

American Society for Radiation Oncology's Astro 401(k) Plan reported $23M in total assets and 77 participants in its 2023 DOL Form 5500 filing, ranking in the 75th 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.

  • #6,808 in Other Services (7,857 peers)

Where Astro 401(k) Plan sits by assets

Astro 401(k) Plan sits in the top quartile of all filed plans by assets, $23M for 77 participants (~$296,311/participant), up 24.3% in 2023.

#6,808
in Other Services (7,857 peers)
+24.3%
assets growth YoY
0.2×
vs typical plan assets (national mean)

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

Astro 401(k) Plan vs every filed plan by assets

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

$22,815,983 Top 25% higher than 75% 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

Astro 401(k) Plan among smaller filed plans by headcount

Plan-year 2023 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Astro 401(k) Plan is a small filing (77 participants) on this national headcount ladder.

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Astro 401(k) Plan reported net income rose from -$4M in the plan year 2022 filing to $4M in the plan year 2023 filing.
  • Astro 401(k) Plan end-of-year assets rose from $18M in the plan year 2022 filing to $23M in the plan year 2023 filing.
  • Astro 401(k) Plan reported participants rose from 75 in the plan year 2022 filing to 77 in the plan year 2023 filing.

See the national 2022→2023 release diff →

Form 5500 schedule snapshot

Filing strip 420943164 · American Society for Radiation Oncology PY 2023 · 401(k)

Astro 401(k) Plan · $23M · 77 · 75th

  • BOY $23M
  • SCH 77
  • EBSA 75th
  • PART 401(k)
  • TYPE near J. E. Grote Company 401(k) Profit Sharing Plan
  • NET ind #6808

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 Other Services retirement plans → · Plans in Virginia →

Astro 401(k) Plan in the asset neighbourhood

Astro 401(k) Plan$23MJ. E. Grote Company 401(k) Profit Sharing PlanJ. E. Grote Company 401(k) P…$23MAvedis Zildjian Co. Retirement PlanAvedis Zildjian Co. Retireme…$23MOklahoma Spine Hospital, LLC Employees' Savings and Profit Sharing PlanOklahoma Spine Hospital, LLC…$23MGeneral Pet 401(k) Plan$23M
End-of-year total assets ($M) among Astro 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Scale-class filing particulars (2023)

Total Assets (Beginning of Year)$18M
Net Assets (End of Year)$23M
Net Income$4M
Employer EIN420943164
Plan Effective Date1998-02-01
Filing StatusFILING RECEIVED

Sponsor Plan History (American Society for Radiation Oncology)

Sponsor-wide plan assets over time

All American Society for Radiation Oncology plans reported in each filing year

Latest sponsor-wide plan assets
$27M 45.06945064009362% vs 2022
2024 filing year
$15M$20M$25M$30M 202220232024 $18.4M $26.6M ▲ +45.0%
Year Plans Participants Total Assets
2022 1 75 $18M
2023 1 77 $23M
2024 1 78 $27M

Nearby 401(k) Plans in Virginia

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

Astro 401(k) Plan vs. nearby 401(k) plans in Virginia, assets vs. participants Scatter plot of 6 data points. -50000050000100000150000 -10010203040 Total assets ($B) Participants Astro 401(k) Plan, Total assets ($B): 0.022815983 · Participants: 77Astro 401(k) PlanNorthrop Grumman Savings Plan, Total assets ($B): 36.173098625 · Participants: 97987Northrop Grumman Savings Plan401(k) Pension Plan, Total assets ($B): 14.97867624 · Participants: 62467401(k) Pension PlanGeneral Dynamics Corporation 401(k) Plan 6.0, Total assets ($B): 11.167449098 · Participants: 48860General Dynamics Corporation 401(k) Plan 6.0Leidos, Inc. Retirement Plan, Total assets ($B): 10.583898778 · Participants: 27043Leidos, Inc. Retirement PlanBae Systems Employees' Savings and Investment Plan, Total assets ($B): 9.406287325 · Participants: 31681Bae Systems Employees' Savings and Investment Plan
Astro 401(k) Plan vs. nearby 401(k) plans in Virginia, assets vs. participants
Compare Astro 401(k) Plan side-by-side with 3 peers →

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

Outside Virginia, the nearest 401(k) by assets is J. E. Grote Company 401(k) Profit Sharing Plan in OH ($23M); by covered participants it is Sme Inc of Seattle 401(k) Plan & Trust in WA (77 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (77 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 Astro 401(k) Plan assets move in 2023? ▼
Astro 401(k) Plan grew sharply - up 24.3% during 2023, from $18M to $23M. Reported net income was $4M.
How have American Society for Radiation Oncology plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), American Society for Radiation Oncology's sponsor-wide assets grew 45.1%, from $18M to $27M.
Where does Astro 401(k) Plan rank by assets among Form 5500 filers? ▼
Astro 401(k) Plan ranks in the 75th 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 Astro 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is J. E. Grote Company 401(k) Profit Sharing Plan in OH ($23M, 288 participants).
Which 401(k) plans cover a similar participant headcount to Astro 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Sme Inc of Seattle 401(k) Plan & Trust in WA (77 participants, $9M 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 420943164.

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.