401(k) · DOL Form 5500 · 2024

Mission Support and Test Services LLC 401(k) Plan

Data updated 2026-08-25

$612M
Total assets Above avg plan size
2,485
Participants Above avg headcount
98th
Percentile by assets National rank
$246,251
Avg per participant Above avg balance/head
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Official DOL plan name: Mission Support and Test Services LLC (Msts) Employee 401(k) Plan · Sponsored by Mission Support and Test Services LLC · Nevada · Professional & Technical Services

$612M in assets, 2,485 participants

Mission Support and Test Services LLC's Mission Support and Test Services LLC (Msts) Employee 401(k) Plan reported $612M in total assets and 2,485 participants in its 2024 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.

  • #19,835 in Professional & Technical Services (20,173 peers)

Coverage in Nevada

Mission Support and Test Services LLC (Msts) Employee 401(k) Plan covers 2,485 participants in Nevada, 3.9x the typical Nevada plan (state average ~636 per filing). Assets: $612M.

#19,835
in Professional & Technical Services (20,173 peers)
+15.4%
assets growth YoY
6.1×
vs typical plan assets (national mean)

Mission Support and Test Services LLC (Msts) Employee 401(k) Plan's outsized position by total assets

Mission Support and Test Services LLC (Msts) Employee 401(k) Plan vs every filed plan by assets

End-of-year total assets · plan year 2024 · DOL Form 5500

$611,933,756 Top 2% higher than 98% of 123,620 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 2024

Mission Support and Test Services LLC (Msts) Employee 401(k) Plan's large-plan peer group by participant headcount

Plan-year 2024 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Mission Support and Test Services LLC (Msts) Employee 401(k) Plan lands in the large band (2,485 participants).

What changed between DOL Form 5500 filings

plan year 2023 → plan year 2024

  • Mission Support and Test Services LLC (Msts) Employee 401(k) Plan reported net income fell from $103M in the plan year 2023 filing to $82M in the plan year 2024 filing.
  • Mission Support and Test Services LLC (Msts) Employee 401(k) Plan reported participants rose from 2,104 in the plan year 2023 filing to 2,485 in the plan year 2024 filing.
  • Mission Support and Test Services LLC (Msts) Employee 401(k) Plan end-of-year assets rose from $530M in the plan year 2023 filing to $612M in the plan year 2024 filing.

See the national 2023→2024 release diff →

DOL schedule card

Filing strip 810705502 · Mission Support and Test Services LLC PY 2024 · 401(k)

Mission Support and Test Services LLC (Msts) Employee 401(k) Plan · $612M · 2,485 · 98th

  • ASSETS $612M
  • ASSETS 2,485
  • ASSETS 98th
  • ASSETS 401(k)
  • ASSETS near Aci Worldwide Corp 401(k) Plan
  • ASSETS ind #19835

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 Nevada →

Mission Support and Test Services LLC (Msts) Employee 401(k) Plan in the asset neighbourhood

Patterson-Uti Energy, Inc. 401(k) Profit Sharing PlanPatterson-Uti Energy, Inc. 4…$613MTarga Resources 401(k) and Profit Sharing PlanTarga Resources 401(k) and P…$613MMission Support and Test Services LLC (Msts) Employee 401(k) PlanMission Support and Test Ser…$612MAci Worldwide Corp 401(k) PlanAci Worldwide Corp 401(k) Pl…$612MWalsh Group Employees Profit Sharing PlanWalsh Group Employees Profit…$611M
End-of-year total assets ($M) among Mission Support and Test Services LLC (Msts) Employee 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2024.

Nevada filing particulars

Total Assets (Beginning of Year)$530M
Net Assets (End of Year)$612M
Net Income$82M
Employer EIN810705502
Plan Effective Date1972-07-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Mission Support and Test Services LLC)

Sponsor-wide plan assets over time

All Mission Support and Test Services LLC plans reported in each filing year

Latest sponsor-wide plan assets
$1.2B 23.00076903468601% vs 2022
2024 filing year
$0.9B$1B$1.1B$1.2B$1.3B 202220232024 $0.97B $1.2B ▲ +23.7%
Year Plans Participants Total Assets
2022 3 4,560 $974M
2023 4 4,838 $1.2B
2024 3 5,756 $1.2B

Nearby 401(k) Plans in Nevada

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

Mission Support and Test Services LLC (Msts) Employee 401(k) Plan vs. nearby 401(k) plans in Nevada, assets vs. participants Scatter plot of 6 data points. 01000020000300004000050000 0.511.522.5 Total assets ($B) Participants Mission Support and Test Services LLC (Msts) Employee 401(k) Plan, Total assets ($B): 0.611933756 · Participants: 2485Mission Support and Test Services LLC (Msts) Employee 401(k) PlanThe Mgm Resorts 401(k) Savings Plan, Total assets ($B): 2.241956368 · Participants: 37719The Mgm Resorts 401(k) Savings PlanCaesars Entertainment, Inc 401(k) Plan, Total assets ($B): 1.939824866 · Participants: 46859Caesars Entertainment, Inc 401(k) PlanBarrick Retirement Plan, Total assets ($B): 1.341794728 · Participants: 7327Barrick Retirement PlanEighth District Electrical Pension Fund Annuity Plan, Total assets ($B): 1.127663414 · Participants: 21516Eighth District Electrical Pension Fund Annuity PlanNv Energy 401(k) Plan, Total assets ($B): 1.125514142 · Participants: 2669Nv Energy 401(k) Plan
Mission Support and Test Services LLC (Msts) Employee 401(k) Plan vs. nearby 401(k) plans in Nevada, assets vs. participants

Mission Support and Test Services LLC (Msts) Employee 401(k) Plan's out-of-state 401(k) peers by assets and headcount

Outside Nevada, the nearest 401(k) by assets is Aci Worldwide Corp 401(k) Plan in NE ($612M); by covered participants it is Kroenke Sports 401(k) Savings Plan in CO (2,484 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($612M here).

Similar participant headcount

Nearest other-state filings by covered participants (2,485 participants); asset peers above are excluded.

DOL Form 5500 plan year 2024. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did Mission Support and Test Services LLC (Msts) Employee 401(k) Plan assets move in 2024? ▼
Mission Support and Test Services LLC (Msts) Employee 401(k) Plan grew sharply - up 15.4% during 2024, from $530M to $612M. Reported net income was $82M.
How have Mission Support and Test Services LLC plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Mission Support and Test Services LLC's sponsor-wide assets grew 23.0%, from $974M to $1.2B.
Where does Mission Support and Test Services LLC (Msts) Employee 401(k) Plan rank by assets among Form 5500 filers? ▼
Mission Support and Test Services LLC (Msts) Employee 401(k) Plan ranks in the 98th percentile by end-of-year assets among 123,622 plans that reported assets for plan year 2024 (in the top 5% of all filed plans by assets).
Which 401(k) plans are similar in size to Mission Support and Test Services LLC (Msts) Employee 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is Aci Worldwide Corp 401(k) Plan in NE ($612M, 1,190 participants).
Which 401(k) plans cover a similar participant headcount to Mission Support and Test Services LLC (Msts) Employee 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Kroenke Sports 401(k) Savings Plan in CO (2,484 participants, $121M in assets).