Skip to main content
Livermore
Livermore
ZHEN

Monolithic Power Systems, Inc.

MPWR
Exchange
Nasdaq
Industry
Semiconductors & Related Devices
SEC CIK
0001280452

In the last 90 days, Monolithic Power Systems, Inc. insiders filed 0 open-market purchases and 8 sales; 1,250 institutions reported holding it in 13F filings for Q2 2026, worth $65.6B in total; superinvestors D1 Capital Partners and Maverick Capital hold it.

13F holders, Q4 2025

Institutional positions in Monolithic Power Systems, Inc. as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
1,061
+98 vs. Q3 2025
Shares held
48.8M
+2.18M (+4.7%) vs. Q3 2025
Total value
$44.2B
+$1.40B (+3.3%) vs. Q3 2025
New holders
190
383 more added
Sold out
92
353 more reduced

18 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting MPWR on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ4 2025: 1,061 institutions
Q1 2021: 530 institutionsQ2 2021: 533 institutionsQ3 2021: 579 institutionsQ4 2021: 627 institutionsQ1 2022: 611 institutionsQ2 2022: 625 institutionsQ3 2022: 630 institutionsQ4 2022: 611 institutionsQ1 2023: 669 institutionsQ2 2023: 652 institutionsQ3 2023: 655 institutionsQ4 2023: 737 institutionsQ1 2024: 807 institutionsQ2 2024: 838 institutionsQ3 2024: 885 institutionsQ4 2024: 864 institutionsQ1 2025: 862 institutionsQ2 2025: 907 institutionsQ3 2025: 981 institutionsQ4 2025: 1,061 institutionsQ1 2026: 1,124 institutionsQ2 2026: 1,250 institutions
Value heldQ4 2025: $44.2B
Q1 2021: $15.1BQ2 2021: $16.1BQ3 2021: $21.1BQ4 2021: $21.5BQ1 2022: $21.3BQ2 2022: $16.8BQ3 2022: $16.6BQ4 2022: $16.5BQ1 2023: $23.3BQ2 2023: $25.2BQ3 2023: $21.2BQ4 2023: $28.6BQ1 2024: $31.2BQ2 2024: $38.6BQ3 2024: $42.8BQ4 2024: $27.6BQ1 2025: $27.0BQ2 2025: $34.6BQ3 2025: $43.0BQ4 2025: $44.2BQ1 2026: $51.6BQ2 2026: $65.6B
Institutions holding MPWR and their total value by quarter
QuarterHoldersValue
Q2 20261,250$65.6B
Q1 20261,124$51.6B
Q4 20251,061$44.2B
Q3 2025981$43.0B
Q2 2025907$34.6B
Q1 2025862$27.0B
Q4 2024864$27.6B
Q3 2024885$42.8B
Q2 2024838$38.6B
Q1 2024807$31.2B
Q4 2023737$28.6B
Q3 2023655$21.2B
Q2 2023652$25.2B
Q1 2023669$23.3B
Q4 2022611$16.5B
Q3 2022630$16.6B
Q2 2022625$16.8B
Q1 2022611$21.3B
Q4 2021627$21.5B
Q3 2021579$21.1B
Q2 2021533$16.1B
Q1 2021530$15.1B

Institutions, Q4 2025

Shares, value and share of portfolio for each institution holding Monolithic Power Systems, Inc.; share changes are against Q3 2025.

Institutions holding MPWR in Q4 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Sunbelt Securities, Inc.12$10.9K0.00%00.0%Unchanged
Steigerwald, Gordon & Koch Inc.12$10.9K0.00%+12New
Atwood & Palmer Inc12$10.9K0.00%00.0%Unchanged
Highline Wealth Partners LLC14$12.7K0.00%00.0%Unchanged
Fortitude Family Office, LLC14$12.7K0.00%+1+7.7%Added
Pacific Center for Financial Services14$12.9K0.00%00.0%Unchanged
SHP Wealth Management15$13.5K0.00%+15New
Transamerica Financial Advisors, Inc.15$13.9K0.00%00.0%Unchanged
Avion Wealth16$14.0K0.00%−1−5.9%Reduced
Sound Income Strategies, LLC14$14.5K0.00%+5+55.6%Added
Sachetta, LLC16$14.5K0.01%00.0%Unchanged
Kingdom Financial Group LLC.16$14.5K0.00%+16New
Smithfield Trust Co16$15.0K0.00%+16New
Swiss Re Ltd17$15.4K0.00%+17New
Tucker Asset Management LLC17$15.4K0.00%+17New
Barnes Dennig Private Wealth Management LLC17$15.4K0.02%+17New
TCTC Holdings, LLC18$16.3K0.00%00.0%Unchanged
Kemnay Advisory Services Inc.18$16.3K0.00%+18New
UMA Financial Services, Inc.18$16.3K0.00%+3+20.0%Added
CBIZ Investment Advisory Services, LLC18$16.3K0.00%+6+50.0%Added
Rexford Capital Inc19$17.2K0.01%00.0%Unchanged
First Command Advisory Services, Inc.19$17.2K0.00%+2+11.8%Added
Center for Financial Planning, Inc.19$17.2K0.00%+19New
Morgan Dempsey Capital Management LLC19$17.3K0.01%00.0%Unchanged
Berbice Capital Management LLC20$18.1K0.01%00.0%Unchanged
Bogart Wealth, LLC20$18.1K0.00%+1+5.3%Added
Cresta Advisors, Ltd.20$18.1K0.01%+20New
JFS Wealth Advisors, LLC20$18.1K0.00%+5+33.3%Added
Private Wealth Management Group, LLC21$19.0K0.01%00.0%Unchanged
Harbor Investment Advisory, LLC21$19.0K0.00%00.0%Unchanged
Westfuller Advisors, LLC21$19.3K0.01%+2+10.5%Added
Clark Wealth Partners22$19.9K0.01%00.0%Unchanged
South State Corp.22$19.9K0.00%+13+144.4%Added
Modus Advisors, LLC22$19.9K0.01%+22New
Tidemark, LLC24$21.8K0.01%00.0%Unchanged
Financial Perspectives, Inc24$22.1K0.01%00.0%Unchanged
Anchor Investment Management, LLC25$22.7K0.00%00.0%Unchanged
Lloyd Advisory Services, LLC.25$22.7K0.01%+25New
Ulland Investment Advisors, LLC25$23.0K0.02%00.0%Unchanged
Sfam, LLC26$23.6K0.02%+26New
Ares Financial Consulting, LLC27$24.5K0.02%+27New
Farmers & Merchants Investments Inc29$26.3K0.00%+1+3.6%Added
True Wealth Design, LLC29$26.3K0.01%00.0%Unchanged
SJS Investment Consulting Inc.29$26.3K0.00%+1+3.6%Added
Provenance Wealth Advisors, LLC30$27.2K0.00%−30−50.0%Reduced
Wolff Wiese Magana LLC30$27.2K0.01%00.0%Unchanged
Ancora Advisors, LLC30$27.2K0.00%+27+900.0%Added
Armstrong Advisory Group, Inc30$27.3K0.00%−11−26.8%Reduced
University of Texas/Texas Am Investment Managment Co31$28.1K0.00%−1−3.1%Reduced
Essential Partners LLC33$29.9K0.01%00.0%Unchanged
Tradewinds Capital Management, LLC34$30.8K0.01%−10−22.7%Reduced
Salomon & Ludwin, LLC36$34.4K0.00%00.0%Unchanged
Thurston, Springer, Miller, Herd & Titak, Inc.38$34.4K0.01%+38New
Bell Investment Advisors, Inc38$34.4K0.01%+1+2.7%Added
Covestor Ltd40$36.0K0.02%+9+29.0%Added
Greenline Wealth Management LLC42$37.7K0.04%+42New
Legacy Wealth Managment, LLC43$39.0K0.02%+1+2.4%Added
Delta Asset Management LLC49$44.4K0.00%−16−24.6%Reduced
Fourth Dimension Wealth, LLC49$44.4K0.02%00.0%Unchanged
GW&K Investment Management, LLC51$46.0K0.00%+5+10.9%Added
Solstein Capital, LLC54$48.9K0.02%+23+74.2%Added
Torren Management, LLC54$49.0K0.03%+54New
Cornerstone Planning Group LLC44$51.1K0.01%−1−2.2%Reduced
Geneos Wealth Management Inc.57$51.7K0.00%−1−1.7%Reduced
Root Financial Partners, LLC58$52.6K0.00%+12+26.1%Added
Rakuten Securities, Inc.58$52.6K0.02%+37+176.2%Added
WPG Advisers, LLC59$53.5K0.04%+18+43.9%Added
AdvisorNet Financial, Inc60$54.4K0.00%−2−3.2%Reduced
Golden State Wealth Management, LLC64$58.0K0.01%00.0%Unchanged
Trust Co of Toledo NA66$59.8K0.01%00.0%Unchanged
Alphadyne Asset Management LP67$60.7K0.01%+67New
DV Equities, LLC67$60.7K0.01%+67New
Bayforest Capital Ltd69$62.5K0.05%+69New
Signature Equity Partners, LLC70$63.5K0.04%+70New
Migdal Insurance & Financial Holdings Ltd.72$65.0K0.00%−51−41.5%Reduced
Private Trust Co NA73$66.2K0.01%−9−11.0%Reduced
First Horizon Corp77$69.8K0.00%+17+28.3%Added
Harbour Investments, Inc.77$69.8K0.00%+40+108.1%Added
Towarzystwo Funduszy Inwestycyjnych Pzu SA82$74.3K0.02%−5−5.7%Reduced
SBI Okasan Asset Management Co.Ltd.80$74.4K0.00%+80New
Pension & Wealth Management Advisors, Inc.81$74.9K0.02%+81New
Evelyn Partners Asset Management Ltd84$76.1K0.02%00.0%Unchanged
IFP Advisors, Inc99$89.7K0.00%+29+41.4%Added
Principia Wealth Advisory, LLC102$92.4K0.06%+99+3,300.0%Added
Reflection Asset Management102$92.4K0.07%+102New
Reyes Financial Architecture, Inc.103$93.4K0.06%−47−31.3%Reduced
Quent Capital, LLC107$97.2K0.01%−10−8.5%Reduced
Sentry Investment Management LLC114$103.0K0.07%00.0%Unchanged
Elyxium Wealth, LLC115$104.3K0.03%+115New
Essex Investment Management Co LLC120$108.8K0.02%00.0%Unchanged
Avalon Trust Co125$113.3K0.01%−2−1.6%Reduced
Trust Co of Vermont130$117.8K0.00%00.0%Unchanged
Montag A & Associates Inc130$118.0K0.01%−59−31.2%Reduced
Basecamp Wealth Advisors LLC134$121.5K0.03%+134New
Onefund, LLC137$124.2K0.07%+12+9.6%Added
Park Place Capital Corp140$126.9K0.03%+3+2.2%Added
Aventura Private Wealth, LLC142$128.7K0.05%00.0%Unchanged
Cromwell Holdings LLC143$129.8K0.07%00.0%Unchanged
Clear Street Markets LLC144$130.5K0.02%+61+73.5%Added
Capital Analysts, LLC146$133.0K0.00%00.0%Unchanged