401(k) · DOL Form 5500 · 2024

Monolithic Power Systems, Inc. 401(k) Plan

Data updated 2026-08-25

$91M
Total assets Below avg plan size
406
Participants Below avg headcount
90th
Percentile by assets National rank
$224,138
Avg per participant Above avg balance/head
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Official DOL plan name: Monolithic Power Systems, Inc. 401(k) Savings Plan · Sponsored by Monolithic Power Systems, Inc. · California · Manufacturing

$91M in assets, 406 participants

Monolithic Power Systems, Inc.'s Monolithic Power Systems, Inc. 401(k) Savings Plan reported $91M in total assets and 406 participants in its 2024 DOL Form 5500 filing, ranking in the 90th 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.

  • #15,106 in Manufacturing (17,777 peers)

Where Monolithic Power Systems, Inc. 401(k) Savings Plan sits by assets

Monolithic Power Systems, Inc. 401(k) Savings Plan sits in the top 10% of all filed plans by assets, $91M for 406 participants (~$224,138/participant), up 25.9% in 2024.

#15,106
in Manufacturing (17,777 peers)
+25.9%
assets growth YoY
0.9×
vs typical plan assets (national mean)

Monolithic Power Systems, Inc. 401(k) Savings Plan's outsized position by total assets

Monolithic Power Systems, Inc. 401(k) Savings Plan vs every filed plan by assets

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

$91,000,161 Top 10% higher than 90% 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

Monolithic Power Systems, Inc. 401(k) Savings Plan among mid-size filed plans by headcount

Plan-year 2024 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Monolithic Power Systems, Inc. 401(k) Savings Plan sits mid-pack in the medium band (406 participants).

What changed between DOL Form 5500 filings

plan year 2023 → plan year 2024

  • Monolithic Power Systems, Inc. 401(k) Savings Plan end-of-year assets rose from $72M in the plan year 2023 filing to $91M in the plan year 2024 filing.
  • Monolithic Power Systems, Inc. 401(k) Savings Plan reported participants rose from 350 in the plan year 2023 filing to 406 in the plan year 2024 filing.
  • Monolithic Power Systems, Inc. 401(k) Savings Plan reported net income rose from $18M in the plan year 2023 filing to $19M in the plan year 2024 filing.

See the national 2023→2024 release diff →

Published 5500 schedule card

Filing strip 770466789 · Monolithic Power Systems, Inc. PY 2024 · 401(k)

Monolithic Power Systems, Inc. 401(k) Savings Plan · $91M · 406 · 90th

  • EOY $91M
  • 5500 406
  • ASSETS 90th
  • PCT 401(k)
  • EIN near Mid-Atlantic Emergency Medical Associates, PLLC 401(k) Profit Sharing Plan
  • RANK ind #15106

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 California →

Monolithic Power Systems, Inc. 401(k) Savings Plan in the asset neighbourhood

Instructure, Inc. 401(k) Plan$91MMid-Atlantic Emergency Medical Associates, PLLC 401(k) Profit Sharing PlanMid-Atlantic Emergency Medic…$91MThe Lakeland Group Retirement Savings PlanThe Lakeland Group Retiremen…$91MMonolithic Power Systems, Inc. 401(k) Savings PlanMonolithic Power Systems, In…$91MZeon Chemicals L. P. Savings PlanZeon Chemicals L. P. Savings…$91M
End-of-year total assets ($M) among Monolithic Power Systems, Inc. 401(k) Savings Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2024.

Scale-class filing particulars (2024)

Total Assets (Beginning of Year)$72M
Net Assets (End of Year)$91M
Net Income$19M
Employer EIN770466789
Plan Effective Date1999-07-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Monolithic Power Systems, Inc.)

Sponsor-wide plan assets over time

All Monolithic Power Systems, Inc. plans reported in each filing year

Latest sponsor-wide plan assets
$91M 66.91565669574827% vs 2022
2024 filing year
$40M$60M$80M$100M 202220232024 $54.5M $91M ▲ +66.9%
Year Plans Participants Total Assets
2022 1 306 $55M
2023 1 350 $72M
2024 1 406 $91M

Nearby 401(k) Plans in California

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

Monolithic Power Systems, Inc. 401(k) Savings Plan vs. nearby 401(k) plans in California, assets vs. participants Scatter plot of 6 data points. -50000050000100000150000 -200204060 Total assets ($B) Participants Monolithic Power Systems, Inc. 401(k) Savings Plan, Total assets ($B): 0.091000161 · Participants: 406Monolithic Power Systems, Inc. 401(k) Savings PlanGoogle LLC 401(k) Savings Plan, Total assets ($B): 48.738057415 · Participants: 116712Google LLC 401(k) Savings PlanOracle Corporation 401(k) Savings and Investment Plan, Total assets ($B): 31.02646504 · Participants: 58962Oracle Corporation 401(k) Savings and Investment PlanIntel 401(k) Savings Plan, Total assets ($B): 24.850880304 · Participants: 55298Intel 401(k) Savings PlanApple 401(k) Plan, Total assets ($B): 24.714519387 · Participants: 101450Apple 401(k) PlanCisco Systems,Inc. 401(k) Plan, Total assets ($B): 22.728425546 · Participants: 40452Cisco Systems,Inc. 401(k) Plan
Monolithic Power Systems, Inc. 401(k) Savings Plan vs. nearby 401(k) plans in California, assets vs. participants
Compare Monolithic Power Systems, Inc. 401(k) Savings Plan side-by-side with 3 peers →

Monolithic Power Systems, Inc. 401(k) Savings Plan's out-of-state 401(k) peers by assets and headcount

Outside California, the nearest 401(k) by assets is Mid-Atlantic Emergency Medical Associates, PLLC 401(k) Profit Sharing Plan in NC ($91M); by covered participants it is Corsa Coal Napp Division 401(k) Retirement Savings Plan in PA (406 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (406 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 Monolithic Power Systems, Inc. 401(k) Savings Plan assets move in 2024? ▼
Monolithic Power Systems, Inc. 401(k) Savings Plan grew sharply - up 25.9% during 2024, from $72M to $91M. Reported net income was $19M.
How have Monolithic Power Systems, Inc. plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Monolithic Power Systems, Inc.'s sponsor-wide assets grew 66.9%, from $55M to $91M.
Where does Monolithic Power Systems, Inc. 401(k) Savings Plan rank by assets among Form 5500 filers? ▼
Monolithic Power Systems, Inc. 401(k) Savings Plan ranks in the 90th percentile by end-of-year assets among 123,622 plans that reported assets for plan year 2024 (in the top 10% of all filed plans by assets).
Which 401(k) plans are similar in size to Monolithic Power Systems, Inc. 401(k) Savings Plan? ▼
Among 401(k) plans in other states, the closest by assets is Mid-Atlantic Emergency Medical Associates, PLLC 401(k) Profit Sharing Plan in NC ($91M, 134 participants).
Which 401(k) plans cover a similar participant headcount to Monolithic Power Systems, Inc. 401(k) Savings Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Corsa Coal Napp Division 401(k) Retirement Savings Plan in PA (406 participants, $33M in assets).

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2024.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 770466789.

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.