401(k) · DOL Form 5500 · 2023

Monolithic Power Systems, Inc. 401(k) Plan

Data updated 2026-08-25

$72M
Total assets Below avg plan size
350
Participants Below avg headcount
89th
Percentile by assets National rank
$206,568
Avg per participant Above avg balance/head
PlainRetire home → About this data RSS: change history

Official DOL plan name: Monolithic Power Systems, Inc. 401(k) Savings Plan · Sponsored by Monolithic Power Systems, Inc. · California · Manufacturing

$72M in assets, 350 participants

Monolithic Power Systems, Inc.'s Monolithic Power Systems, Inc. 401(k) Savings Plan reported $72M in total assets and 350 participants in its 2023 DOL Form 5500 filing, ranking in the 89th 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.

  • #15,635 in Manufacturing (18,722 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 quartile of all filed plans by assets, $72M for 350 participants (~$206,568/participant), up 32.6% in 2023.

#15,635
in Manufacturing (18,722 peers)
+32.6%
assets growth YoY
0.7×
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 2023 · DOL Form 5500

$72,298,919 Top 11% higher than 89% 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

Monolithic Power Systems, Inc. 401(k) Savings 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. Monolithic Power Systems, Inc. 401(k) Savings Plan sits mid-pack in the medium band (350 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Monolithic Power Systems, Inc. 401(k) Savings Plan reported net income rose from -$10M in the plan year 2022 filing to $18M in the plan year 2023 filing.
  • Monolithic Power Systems, Inc. 401(k) Savings Plan end-of-year assets rose from $55M in the plan year 2022 filing to $72M in the plan year 2023 filing.
  • Monolithic Power Systems, Inc. 401(k) Savings Plan reported participants rose from 306 in the plan year 2022 filing to 350 in the plan year 2023 filing.

See the national 2022→2023 release diff →

Form 5500 schedule snapshot

Filing strip 770466789 · Monolithic Power Systems, Inc. PY 2023 · 401(k)

Monolithic Power Systems, Inc. 401(k) Savings Plan · $72M · 350 · 89th

  • PART $72M
  • TYPE 350
  • NET 89th
  • BOOK 401(k)
  • VS-ST near Greater New York Mutual Insurance Company 401(k) Employee Savings Plan
  • BOY ind #15635

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

Prestige Services Corp. 401(k) PlanPrestige Services Corp. 401(…$72MBridgeway Benefit Technologies, LLC 401(k) Retirement Savings PlanBridgeway Benefit Technologi…$72MMonolithic Power Systems, Inc. 401(k) Savings PlanMonolithic Power Systems, In…$72MGreater New York Mutual Insurance Company 401(k) Employee Savings PlanGreater New York Mutual Insu…$72MThe Marquis 401(k) Savings PlanThe Marquis 401(k) Savings P…$72M
End-of-year total assets ($M) among Monolithic Power Systems, Inc. 401(k) Savings Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Scale-class filing particulars (2023)

Total Assets (Beginning of Year)$55M
Net Assets (End of Year)$72M
Net Income$18M
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. -50000050000100000150000200000250000 -200204060 Total assets ($B) Participants Monolithic Power Systems, Inc. 401(k) Savings Plan, Total assets ($B): 0.072298919 · Participants: 350Monolithic Power Systems, Inc. 401(k) 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
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 Greater New York Mutual Insurance Company 401(k) Employee Savings Plan in NY ($72M); by covered participants it is Preservation Management, Inc. 401(k) Profit Sharing Plan in ME (350 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (350 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 Monolithic Power Systems, Inc. 401(k) Savings Plan assets move in 2023? ▼
Monolithic Power Systems, Inc. 401(k) Savings Plan surged - up 32.6% during 2023, from $55M to $72M. Reported net income was $18M.
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 89th 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 Monolithic Power Systems, Inc. 401(k) Savings Plan? ▼
Among 401(k) plans in other states, the closest by assets is Greater New York Mutual Insurance Company 401(k) Employee Savings Plan in NY ($72M, 374 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 Preservation Management, Inc. 401(k) Profit Sharing Plan in ME (350 participants, $7M 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 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.