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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 9 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, Q3 2025

Institutional positions in Monolithic Power Systems, Inc. as of Sep 30, 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
981
+89 vs. Q2 2025
Shares held
46.8M
+118.5K (+0.3%) vs. Q2 2025
Total value
$43.0B
+$8.79B (+25.7%) vs. Q2 2025
New holders
164
361 more added
Sold out
75
317 more reduced

15 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 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 holdersQ3 2025: 981 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 heldQ3 2025: $43.0B
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, Q3 2025

Shares, value and share of portfolio for each institution holding Monolithic Power Systems, Inc.; share changes are against Q2 2025.

Institutions holding MPWR in Q3 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Optas, LLC373$343.4K0.06%+373New
West Family Investments, Inc.370$340.6K0.08%+10+2.8%Added
Summit Creek Advisors LLC365$336.0K0.05%−25−6.4%Reduced
Livforsakringsbolaget Skandia, Omsesidigt365$335.9K0.01%00.0%Unchanged
Hutchens & Kramer Investment Management Group, LLC362$333.3K0.13%+64+21.5%Added
Clear Creek Financial Management, LLC360$331.4K0.03%−272−43.0%Reduced
Sowell Financial Services LLC354$326.1K0.01%−16−4.3%Reduced
Avestar Capital, LLC354$325.9K0.02%+354New
First Affirmative Financial Network341$314.0K0.15%−9−2.6%Reduced
Turtle Creek Wealth Advisors, LLC341$313.9K0.03%+341New
AMG National Trust Bank340$313.0K0.01%00.0%Unchanged
MAI Capital Management339$311.8K0.00%+143+73.0%Added
SG Americas Securities, LLC338$311.0K0.00%−21,380−98.4%Reduced
Dorsey & Whitney Trust CO LLC337$310.6K0.02%−13−3.7%Reduced
BAM Wealth Management, LLC335$308.4K0.24%+335New
TigerOak Management, L.L.C.334$307.5K0.10%00.0%Unchanged
Ewa, LLC333$306.8K0.08%+2+0.6%Added
BankPlus Wealth Management LLC331$305.1K0.18%+2+0.6%Added
Commerzbank Aktiengesellschaft330$304.0K0.01%00.0%Unchanged
SageView Advisory Group, LLC321$295.5K0.01%+18+5.9%Added
Keel Point, LLC320$294.6K0.02%+30+10.3%Added
Potentia Wealth320$294.6K0.11%00.0%Unchanged
Unique Wealth, LLC318$292.8K0.04%+3+1.0%Added
Camden Capital, LLC317$292.1K0.02%+317New
Consolidated Portfolio Review Corp317$291.8K0.04%+14+4.6%Added
FSM Wealth Advisors, LLC315$290.1K0.04%+19+6.4%Added
Phoenix Holdings Ltd.310$285.5K0.00%+310New
BIP Wealth, LLC309$284.5K0.01%+309New
Aptus Capital Advisors, LLC307$282.6K0.00%+2+0.7%Added
Fedenia Advisers LLC305$280.8K0.11%+8+2.7%Added
Wallace Advisory Group, LLC382$279.4K0.22%−59−13.4%Reduced
Prakash Investment Advisors LLC300$276.2K0.20%+300New
Allworth Financial LP299$275.0K0.00%+81+37.2%Added
Cary Street Partner Investment Advisory LLC298$274.1K0.11%+9+3.1%Added
Journey Strategic Wealth LLC297$273.4K0.01%−65−18.0%Reduced
Flow Traders U.S. LLC292$269.0K0.01%+292New
CX Institutional291$268.0K0.01%+1+0.3%Added
Dearborn Partners LLC290$267.0K0.01%+290New
Personal Cfo Solutions, LLC289$266.1K0.05%−12−4.0%Reduced
Integrated Investment Consultants, LLC283$260.5K0.04%00.0%Unchanged
Financiere des Professionnels - Fonds d,investissement inc.283$260.5K0.02%+283New
Fieldview Capital Management, LLC283$260.5K0.04%+283New
First Bank & Trust281$258.7K0.04%00.0%Unchanged
Eq LLC279$257.2K0.09%00.0%Unchanged
Csenge Advisory Group273$251.0K0.01%−78−22.2%Reduced
Atom Investors LP271$249.5K0.02%+271New
Pallas Capital Advisors LLC271$249.2K0.01%+271New
Pure Financial Advisors, Inc.269$247.7K0.00%+269New
Howard Capital Management Inc.269$247.7K0.00%+269New
Shelton Capital Management267$245.8K0.01%+267New
Checchi Capital Advisers, LLC266$244.9K0.02%−73−21.5%Reduced
Alta Advisers Ltd265$244.0K0.07%+265New
Woodward Diversified Capital, LLC264$243.0K0.11%−13−4.7%Reduced
Sonoma Allocations LLC233$240.0K0.09%+233New
Massmutual Trust Co FSB257$236.6K0.01%+8+3.2%Added
AlTi Global, Inc.256$236.1K0.01%+256New
Maridea Wealth Management LLC229$236.0K0.04%+229New
Naviter Wealth, LLC254$234.2K0.03%+254New
Corundum Group, Inc.254$233.8K0.10%−23−8.3%Reduced
Gladstone Institutional Advisory LLC254$233.8K0.01%+254New
Tradition Wealth Management, LLC253$232.9K0.02%+253New
SBI Securities Co., Ltd.252$232.0K0.01%−104−29.2%Reduced
MOKAN Wealth Management Inc.248$229.3K0.12%+248New
Miracle Mile Advisors, LLC246$226.7K0.00%+246New
Brown Brothers Harriman & Co246$226.5K0.00%+86+53.8%Added
Sustainable Insight Capital Management, LLC244$224.6K0.07%+244New
Simplicity Wealth,LLC243$224.1K0.01%+243New
Resonant Capital Advisors, LLC243$224.1K0.01%+243New
180 Wealth Advisors, LLC242$222.8K0.03%+242New
Conning Inc.241$221.9K0.01%+241New
Gerber Kawasaki Wealth & Investment Management238$219.3K0.01%−53−18.2%Reduced
PDS Planning, Inc238$219.1K0.02%+238New
Bridgewater Advisors Inc.227$217.5K0.02%+227New
TCG Advisory Services, LLC236$217.3K0.01%+236New
Alpha Family Trust235$216.3K0.10%+235New
Meridian Wealth Advisors, LLC233$214.5K0.03%+233New
Gsa Capital Partners LLP232$214.0K0.02%−531−69.6%Reduced
Belpointe Asset Management LLC229$210.8K0.01%+229New
Fortis Capital Advisors, LLC229$210.8K0.03%+229New
Venturi Wealth Management, LLC229$210.8K0.01%+229New
Sunflower Bank, N.A.228$209.9K0.05%+228New
Cresset Asset Management, LLC227$209.4K0.00%+227New
MCF Advisors LLC227$209.3K0.01%00.0%Unchanged
Wealth Alliance227$209.2K0.02%+227New
Wall Street Financial Group, Inc.225$207.1K0.15%+225New
International Assets Investment Management, LLC276$206.4K0.02%00.0%Unchanged
Autumn Glory Partners, LLC223$205.3K0.08%+223New
CWA Asset Management Group, LLC220$202.5K0.01%+220New
Childress Capital Advisors, LLC220$202.4K0.04%+220New
CVA Family Office, LLC219$201.6K0.03%+1+0.5%Added
Purkiss Capital Advisors LLC219$201.6K0.10%+219New
Jacobi Capital Management LLC218$201.1K0.01%+218New
Drive Wealth Management, LLC218$200.8K0.04%+218New
St Germain D J Co Inc201$185.0K0.01%−29−12.6%Reduced
Firsthand Capital Management, Inc.200$184.1K0.31%+200New
Silver Oak Securities, Inc197$181.4K0.01%+197New
Montag A & Associates Inc189$174.3K0.01%−161−46.0%Reduced
LRI Investments, LLC188$173.1K0.01%00.0%Unchanged
Harel Insurance Investments & Financial Services Ltd.168$154.0K0.00%+168New
YANKCOM Partnership165$151.9K0.07%+2+1.2%Added