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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, 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
Solstein Capital, LLC54$48.9K0.02%+23+74.2%Added
GW&K Investment Management, LLC51$46.0K0.00%+5+10.9%Added
Delta Asset Management LLC49$44.4K0.00%−16−24.6%Reduced
Fourth Dimension Wealth, LLC49$44.4K0.02%00.0%Unchanged
Legacy Wealth Managment, LLC43$39.0K0.02%+1+2.4%Added
Greenline Wealth Management LLC42$37.7K0.04%+42New
Covestor Ltd40$36.0K0.02%+9+29.0%Added
Bell Investment Advisors, Inc38$34.4K0.01%+1+2.7%Added
Thurston, Springer, Miller, Herd & Titak, Inc.38$34.4K0.01%+38New
Salomon & Ludwin, LLC36$34.4K0.00%00.0%Unchanged
Tradewinds Capital Management, LLC34$30.8K0.01%−10−22.7%Reduced
Essential Partners LLC33$29.9K0.01%00.0%Unchanged
University of Texas/Texas Am Investment Managment Co31$28.1K0.00%−1−3.1%Reduced
Armstrong Advisory Group, Inc30$27.3K0.00%−11−26.8%Reduced
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
SJS Investment Consulting Inc.29$26.3K0.00%+1+3.6%Added
True Wealth Design, LLC29$26.3K0.01%00.0%Unchanged
Farmers & Merchants Investments Inc29$26.3K0.00%+1+3.6%Added
Ares Financial Consulting, LLC27$24.5K0.02%+27New
Sfam, LLC26$23.6K0.02%+26New
Ulland Investment Advisors, LLC25$23.0K0.02%00.0%Unchanged
Lloyd Advisory Services, LLC.25$22.7K0.01%+25New
Anchor Investment Management, LLC25$22.7K0.00%00.0%Unchanged
Financial Perspectives, Inc24$22.1K0.01%00.0%Unchanged
Tidemark, LLC24$21.8K0.01%00.0%Unchanged
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
Westfuller Advisors, LLC21$19.3K0.01%+2+10.5%Added
Private Wealth Management Group, LLC21$19.0K0.01%00.0%Unchanged
Harbor Investment Advisory, LLC21$19.0K0.00%00.0%Unchanged
JFS Wealth Advisors, LLC20$18.1K0.00%+5+33.3%Added
Cresta Advisors, Ltd.20$18.1K0.01%+20New
Berbice Capital Management LLC20$18.1K0.01%00.0%Unchanged
Bogart Wealth, LLC20$18.1K0.00%+1+5.3%Added
Morgan Dempsey Capital Management LLC19$17.3K0.01%00.0%Unchanged
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
CBIZ Investment Advisory Services, LLC18$16.3K0.00%+6+50.0%Added
UMA Financial Services, Inc.18$16.3K0.00%+3+20.0%Added
TCTC Holdings, LLC18$16.3K0.00%00.0%Unchanged
Kemnay Advisory Services Inc.18$16.3K0.00%+18New
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
Smithfield Trust Co16$15.0K0.00%+16New
Kingdom Financial Group LLC.16$14.5K0.00%+16New
Sachetta, LLC16$14.5K0.01%00.0%Unchanged
Sound Income Strategies, LLC14$14.5K0.00%+5+55.6%Added
Avion Wealth16$14.0K0.00%−1−5.9%Reduced
Transamerica Financial Advisors, Inc.15$13.9K0.00%00.0%Unchanged
SHP Wealth Management15$13.5K0.00%+15New
Pacific Center for Financial Services14$12.9K0.00%00.0%Unchanged
Highline Wealth Partners LLC14$12.7K0.00%00.0%Unchanged
Fortitude Family Office, LLC14$12.7K0.00%+1+7.7%Added
Atwood & Palmer Inc12$10.9K0.00%00.0%Unchanged
Webster Bank, N. A.12$10.9K0.00%00.0%Unchanged
Sunbelt Securities, Inc.12$10.9K0.00%00.0%Unchanged
Steigerwald, Gordon & Koch Inc.12$10.9K0.00%+12New
Cetera Trust Company, N.A11$9.97K0.01%00.0%Unchanged
Manchester Capital Management LLC11$9.97K0.00%+2+22.2%Added
First Pacific Financial11$9.97K0.00%+3+37.5%Added
Loring Wolcott & Coolidge Fiduciary Advisors LLP9$9.86K0.00%+9New
Ameriflex Group, Inc.10$9.06K0.00%−10−50.0%Reduced
Crewe Advisors LLC10$9.06K0.00%00.0%Unchanged
Howard Hughes Medical Institute10$9.06K0.01%00.0%Unchanged
Berkshire Capital Holdings Inc10$9.06K0.00%00.0%Unchanged
IAG Wealth Partners, LLC10$9.06K0.00%00.0%Unchanged
WealthCollab, LLC10$9.06K0.00%+3+42.9%Added
Flagship Harbor Advisors, LLC10$9.06K0.00%+10New
Mowery & Schoenfeld Wealth Management, LLC9$8.17K0.01%+3+50.0%Added
Asset Dedication, LLC9$8.16K0.00%00.0%Unchanged
Atlantic Trust, LLC9$8.16K0.00%00.0%Unchanged
Luken Investment Analytics, LLC9$8.16K0.00%+9New
Hager Investment Management Services, LLC9$8.16K0.00%+9New
Westside Investment Management, Inc.8$7.43K0.00%+2+33.3%Added
Wealth Watch Advisors, INC8$7.25K0.00%00.0%Unchanged
ZRC Wealth Management, LLC8$7.25K0.00%+6+300.0%Added
Quarry LP8$7.25K0.00%+8New
McMillan Office, Inc.8$7.25K0.00%+8New
Quest 10 Wealth Builders, Inc.7$6.77K0.01%00.0%Unchanged
Financial Network Wealth Advisors LLC7$6.37K0.01%−1−12.5%Reduced
Bartlett & Co. Wealth Management LLC7$6.36K0.00%+6+600.0%Added
Concord Wealth Partners7$6.34K0.00%00.0%Unchanged
Altshuler Shaham Ltd7$6.34K0.00%+2+40.0%Added
North Star Investment Management Corp.7$6.34K0.00%+6+600.0%Added
United Financial Planning Group LLC7$6.34K0.00%+7New
Cape Investment Advisory, Inc.7$6.34K0.00%+2+40.0%Added
Proffitt & Goodson Inc6$5.44K0.00%−2−25.0%Reduced
Kilter Group LLC6$5.44K0.00%+1+20.0%Added
Joseph Group Capital Management6$5.44K0.00%+6New
Dunhill Financial, LLC6$5.27K0.00%+2+50.0%Added
Cranbrook Wealth Management, LLC5$4.71K0.00%00.0%Unchanged
PFS Partners, LLC5$4.55K0.00%00.0%Unchanged
Prestige Wealth Management Group LLC5$4.54K0.00%00.0%Unchanged
Imprint Wealth LLC5$4.53K0.02%−11−68.8%Reduced
Hughes Financial Services, LLC5$4.53K0.00%00.0%Unchanged