How big is Monolithic Power Systems, Inc.'s plan?

Monolithic Power Systems, Inc.'s plan reported $91.0M in assets and 428 participants for 2024.

Original filing (PDF)20250925171746NAL0009419952001

Monolithic Power Systems, Inc.

Name: Monolithic Power Systems, Inc. — Monolithic Power, Form 5500 (2024)
Creator: Monolithic Power Systems, Inc.
License: https://www.usa.gov/government-works

Form 5500

FILING_RECEIVED

Monolithic Power Systems, Inc. 401(k) Savings Plan

401(k) retirement plan · Monolithic Power Systems, Inc.'s Monolithic Power Systems, Inc. 401(k) Savings Plan held $91.0M in plan assets for 428 participants in 2024, with Fidelity as recordkeeper.

Signals · 1

Corrective distributions issued

Active participants

428

Accounts w/ balance

460

Plan assets (EOY)

$91.0M

Net assets (EOY)

$91.0M

People on this filing

Sajna Jabbar signed Monolithic Power Systems, Inc.'s 2024 Form 5500 as plan administrator.

Sajna Jabbar — Plan Administrator — Form 5500 signer

Get verified email & phone for these signers

Signer names are public record from the Form 5500 e-signature.

Plan identifiers

Monolithic Power Systems, Inc.'s EIN is 77-0466789.

EIN 77-0466789

Plan number 001

Plan year 2024

ACK ID 20250925171746NAL0009419952001

Official Form 5500 document

Download the official 2024 Form 5500 (PDF) for Monolithic Power Systems, Inc. from the U.S. Department of Labor's EFAST2 system.

Download the official 2024 Form 5500 (PDF)

Plan features

Monolithic Power Systems, Inc.'s plan includes ERISA 404(c) participant direction, profit-sharing, a 401(k) feature, a default investment (QDIA).

Decision-maker contacts

One unlock reveals every key decision-maker — plan signer, CFO, HR & Benefits — with verified email + LinkedIn for MONOLITHIC POWER SYSTEMS, INC..

Finding similar companies…

How this plan invests

This plan

45 securities

funds · stocks · CUSIPs

Holdings are itemized directly on this plan's Schedule of Assets, below.

Plan health score

Top-tier plan health

Directional indicator from public Form 5500 data — compliance & integrity, total plan cost, participant health and vendor stack, benchmarked against same-size peers. Not a fiduciary tool.

Compliance & integrity

Total plan cost

Plan health

Vendor & structure

100

Knocking points off

Corrective distributions issued (likely failed ADP/ACP testing).
Low account-holder ratio — balance-holders per active participant in the bottom quartile of peers (24th percentile).
Bottom-decile employer contributions per participant (2nd percentile).

Helping the score

Below-peer total plan cost (99th percentile).

Plan sponsor

Name

MONOLITHIC POWER SYSTEMS, INC.

EIN

all filings

Address

79 GREAT OAKS BLVD · SAN JOSE, CA · 95119

Phone

(408) 826-0600

Industry

Manufacturing

Plan administrator

Same as plan sponsor.

Plan characteristics

Plan number

001

Plan year

2024

Plan year begin

2024-01-01

Tax period

2024-12-31

Filed

2025-09-25

Pension benefit codes

2F · ERISA section 404(c)

2G · Total participant-directed accounts

2E · Profit-sharing

2J · 401(k) feature

2K · 401(m) arrangement

2T · Default investment account (QDIA)

3D · Pre-approved plan (master / prototype / VS)

Audit & trust (Schedule H)

Service providers (Schedule C)

1 rows

Recordkeeper

Name	EIN	Location	Relation	Direct comp	Indirect comp
FIDELITY INVESTMENTS INSTITUTIONAL	04-2647786	—	RECORDKEEPER	-$19K	—

Investments

45 direct securities· $89.8M(99% of reported assets)

Mutual Funds

$69.9M

35 holdings

Common Collective Trusts

$15.5M

5 holdings

Other securities

$4.4M

5 holdings

					% of plan
Fidelity Blue Chip Growth Fund Mutual Fund	Mutual Funds	—	—	$9.3M	10.2%
Fidelity 500 Index Fund Mutual Fund	Common Collective Trusts	—	—	$8.7M	9.5%
Fidelity Growth Company Fund Mutual Fund	Mutual Funds	—	—	$7.8M	8.5%
Fidelity Freedom 2035 Fund Mutual Fund	Mutual Funds	—	—	$6.1M	6.7%
Fidelity Contrafund Fund Mutual Fund	Mutual Funds	—	—	$5.0M	5.5%
Fidelity Freedom 2050 Fund Mutual Fund	Mutual Funds	—	—	$4.4M	4.9%
Fidelity Select Software and IT Services * Portfolio Mutual Fund	Mutual Funds	—	—	$4.4M	4.8%
Fidelity OTC Portfolio Mutual Fund	Mutual Funds	—	—	$3.7M	4.1%
Fidelity Total Market Index Fund Mutual Fund	Common Collective Trusts	—	—	$3.6M	4.0%
Fidelity Freedom 2030 Fund Mutual Fund	Mutual Funds	—	—	$3.1M	3.4%
Fidelity Government Money Market Fund Mutual Fund	Mutual Funds	—	—	$2.9M	3.2%
Fidelity Freedom 2040 Fund Mutual Fund	Mutual Funds	—	—	$2.2M	2.5%
Fidelity Freedom 2025 Fund Mutual Fund	Mutual Funds	—	—	$1.8M	2.0%
Fidelity Freedom 2045 Fund Mutual Fund	Mutual Funds	—	—	$1.8M	2.0%
Fidelity Freedom 2055 Fund Mutual Fund	Mutual Funds	—	—	$1.7M	1.9%
T. Rowe Price Dividend Growth Fund Mutual Fund	Other securities	—	—	$1.7M	1.8%
Fidelity Extended Market Index Fund Mutual Fund	Common Collective Trusts	—	—	$1.6M	1.7%
Fidelity Freedom 2060 Fund Mutual Fund	Mutual Funds	—	—	$1.4M	1.5%
Fidelity Low-Priced Stock Fund Mutual Fund	Mutual Funds	—	—	$1.3M	1.4%
Fidelity Real Estate Investment Portfolio Mutual Fund	Mutual Funds	—	—	$1.2M	1.3%
Fidelity Puritan Fund Mutual Fund	Mutual Funds	—	—	$1.1M	1.3%
Fidelity Value Fund Mutual Fund	Mutual Funds	—	—	$1.1M	1.2%
Fidelity Select Medical Technology and * Devices Portfolio Mutual Fund	Mutual Funds	—	—	$1.0M	1.1%
Fidelity U.S. Bond Index Fund Mutual Fund	Common Collective Trusts	—	—	$1.0M	1.1%
Fidelity Freedom 2020 Fund Mutual Fund	Mutual Funds	—	—	$1.0M	1.1%
JPMorgan Equity Income Fund Mutual Fund	Other securities	—	—	$896K	1.0%
Janus Henderson Enterprise Fund Mutual Fund	Mutual Funds	—	—	$887K	1.0%
Fidelity Select Energy Portfolio Mutual Fund	Mutual Funds	—	—	$875K	1.0%
Fidelity Total Bond Fund Mutual Fund	Mutual Funds	—	—	$860K	0.9%
Fidelity Small Cap Discovery Fund Mutual Fund	Mutual Funds	—	—	$735K	0.8%
Fidelity Small Cap Value Fund Mutual Fund	Mutual Funds	—	—	$656K	0.7%
Fidelity International Index Fund Mutual Fund	Common Collective Trusts	—	—	$652K	0.7%
Fidelity Select Consumer Staples Portfolio Mutual Fund	Mutual Funds	—	—	$642K	0.7%
Virtus Newfleet Multi-Sector Short Term * Bond Fund Mutual Fund	Other securities	—	—	$621K	0.7%
Virtus AllianzGI Focused Growth Fund Mutual Fund	Other securities	—	—	$619K	0.7%
American Century Small Cap Growth Fund Mutual Fund	Other securities	—	—	$560K	0.6%
Fidelity Diversified International Fund Mutual Fund	Mutual Funds	—	—	$558K	0.6%
Fidelity Balanced Fund Mutual Fund	Mutual Funds	—	—	$524K	0.6%
Fidelity Overseas Fund Mutual Fund	Mutual Funds	—	—	$504K	0.6%
Fidelity Select Chemicals Portfolio Mutual Fund	Mutual Funds	—	—	$381K	0.4%
Fidelity Freedom 2010 Fund Mutual Fund	Mutual Funds	—	—	$327K	0.4%
Fidelity China Region Fund Mutual Fund	Mutual Funds	—	—	$322K	0.4%
Fidelity Freedom 2065 Fund Mutual Fund	Mutual Funds	—	—	$144K	0.2%
Fidelity Freedom Income Fund Mutual Fund	Mutual Funds	—	—	$87K	<0.1%
Fidelity Freedom 2015 Fund Mutual Fund	Mutual Funds	—	—	$78K	<0.1%