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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 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, Q1 2026

Institutional positions in Monolithic Power Systems, Inc. as of Mar 31, 2026. 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
1,124
+80 vs. Q4 2025
Shares held
47.3M
+5.32M (+12.7%) vs. Q4 2025
Total value
$51.6B
+$13.6B (+35.9%) vs. Q4 2025
New holders
181
384 more added
Sold out
101
408 more reduced

17 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 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 holdersQ1 2026: 1,124 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 heldQ1 2026: $51.6B
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, Q1 2026

Shares, value and share of portfolio for each institution holding Monolithic Power Systems, Inc.; share changes are against Q4 2025.

Institutions holding MPWR in Q1 2026
InstitutionSharesValue% of portfolioChange in sharesAction
Crewe Advisors LLC10$10.9K0.00%00.0%Unchanged
IAG Wealth Partners, LLC10$10.9K0.00%00.0%Unchanged
Marquette Asset Management, LLC10$10.9K0.00%+5+100.0%Added
RMG Wealth Management LLC7$11.6K0.00%+7New
Highline Wealth Partners LLC11$12.0K0.00%−3−21.4%Reduced
Manchester Capital Management LLC11$12.0K0.00%00.0%Unchanged
Cetera Trust Company, N.A11$12.0K0.01%00.0%Unchanged
WealthCollab, LLC11$12.0K0.00%+1+10.0%Added
Cedar Mountain Advisors, LLC11$12.0K0.00%+11New
Loring Wolcott & Coolidge Fiduciary Advisors LLP9$12.2K0.00%00.0%Unchanged
Webster Bank, N. A.12$13.1K0.00%00.0%Unchanged
Pacific Center for Financial Services14$15.3K0.00%00.0%Unchanged
Atwood & Palmer Inc14$15.3K0.00%+2+16.7%Added
Hager Investment Management Services, LLC14$15.3K0.01%+5+55.6%Added
Signature Equity Partners, LLC14$15.4K0.01%−56−80.0%Reduced
Armstrong Advisory Group, Inc14$15.5K0.00%−16−53.3%Reduced
Sound Income Strategies, LLC14$15.7K0.00%00.0%Unchanged
Intentional Wealth Strategies, LLC15$16.4K0.02%+15New
Avion Wealth16$17.0K0.00%00.0%Unchanged
Harbor Investment Advisory, LLC17$18.6K0.00%−4−19.0%Reduced
Swiss Re Ltd17$18.6K0.11%00.0%Unchanged
First Pacific Financial17$18.6K0.00%+6+54.5%Added
Sachetta, LLC17$18.6K0.01%+1+6.3%Added
United Financial Planning Group LLC18$19.7K0.01%+11+157.1%Added
Portus Wealth Advisors, LLC18$19.7K0.02%+18New
UMA Financial Services, Inc.18$19.7K0.00%00.0%Unchanged
Center for Financial Planning, Inc.19$20.8K0.00%00.0%Unchanged
Rexford Capital Inc19$20.8K0.01%00.0%Unchanged
Kemnay Advisory Services Inc.19$20.8K0.00%+1+5.6%Added
JFS Wealth Advisors, LLC19$20.8K0.00%−1−5.0%Reduced
Morgan Dempsey Capital Management LLC19$20.8K0.01%00.0%Unchanged
Smithfield Trust Co20$21.0K0.00%+4+25.0%Added
Bogart Wealth, LLC20$21.9K0.00%00.0%Unchanged
Fortitude Family Office, LLC20$21.9K0.00%+6+42.9%Added
Financial Management Professionals, Inc.20$21.9K0.00%+20New
SHP Wealth Management21$22.9K0.00%+6+40.0%Added
Private Wealth Management Group, LLC21$23.0K0.01%00.0%Unchanged
Innovative Asset Advisors Group, LLC21$23.0K0.01%+21New
Westfuller Advisors, LLC21$23.3K0.01%00.0%Unchanged
First Command Advisory Services, Inc.23$25.2K0.00%+4+21.1%Added
Clark Wealth Partners24$26.3K0.02%+2+9.1%Added
Financial Perspectives, Inc24$26.7K0.01%00.0%Unchanged
Ulland Investment Advisors, LLC25$27.0K0.02%00.0%Unchanged
Anchor Investment Management, LLC25$27.3K0.00%00.0%Unchanged
Tidemark, LLC25$27.4K0.01%+1+4.2%Added
Rakuten Securities, Inc.26$28.4K0.01%−32−55.2%Reduced
Sfam, LLC26$28.4K0.03%00.0%Unchanged
True Wealth Design, LLC26$28.4K0.01%−3−10.3%Reduced
Transamerica Financial Advisors, Inc.26$28.7K0.00%+11+73.3%Added
Ares Financial Consulting, LLC27$30.2K0.02%00.0%Unchanged
Farmers & Merchants Investments Inc29$31.7K0.00%00.0%Unchanged
Provenance Wealth Advisors, LLC30$32.8K0.00%00.0%Unchanged
Wolff Wiese Magana LLC30$32.8K0.02%00.0%Unchanged
Twin Peaks Wealth Advisors, LLC30$32.8K0.01%+30New
SJS Investment Consulting Inc.31$33.9K0.00%+2+6.9%Added
Tradewinds Capital Management, LLC34$37.2K0.01%00.0%Unchanged
Ancora Advisors, LLC34$37.2K0.00%+4+13.3%Added
Salomon & Ludwin, LLC36$40.3K0.00%00.0%Unchanged
Strategic Advocates LLC37$40.5K0.18%+37New
Thurston, Springer, Miller, Herd & Titak, Inc.38$41.5K0.02%00.0%Unchanged
Sunbelt Securities, Inc.40$43.7K0.00%+28+233.3%Added
Capital & Planning, LLC40$43.7K0.03%+40New
Essential Partners LLC43$47.0K0.02%+10+30.3%Added
Legacy Wealth Managment, LLC46$50.3K0.03%+3+7.0%Added
Bell Investment Advisors, Inc47$51.4K0.01%+9+23.7%Added
Solstein Capital, LLC49$53.6K0.02%−5−9.3%Reduced
Delta Asset Management LLC49$53.6K0.00%00.0%Unchanged
Fourth Dimension Wealth, LLC49$53.6K0.02%00.0%Unchanged
WPG Advisers, LLC50$54.7K0.04%−9−15.3%Reduced
GW&K Investment Management, LLC50$55.0K0.00%−1−2.0%Reduced
Opal Wealth Advisors, LLC55$60.1K0.01%+55New
Trust Co of Toledo NA56$61.2K0.01%−10−15.2%Reduced
AdvisorNet Financial, Inc60$65.6K0.00%00.0%Unchanged
Root Financial Partners, LLC60$65.6K0.00%+2+3.4%Added
Geneos Wealth Management Inc.63$68.9K0.00%+6+10.5%Added
Golden State Wealth Management, LLC64$70.0K0.01%00.0%Unchanged
Cornerstone Planning Group LLC46$71.6K0.01%+2+4.5%Added
Rossby Financial, LCC64$71.6K0.01%+59+1,180.0%Added
Private Trust Co NA67$73.3K0.01%−6−8.2%Reduced
Timothy G. Youngquist 2020 Irrevocable Trust71$77.6K0.04%+71New
Owl Creek Wealth Partners LLC71$77.6K0.03%+71New
Migdal Insurance & Financial Holdings Ltd.72$78.7K0.00%00.0%Unchanged
Pension & Wealth Management Advisors, Inc.72$80.3K0.02%−9−11.1%Reduced
First Horizon Corp75$82.0K0.00%−2−2.6%Reduced
Towarzystwo Funduszy Inwestycyjnych Pzu SA82$89.7K0.03%00.0%Unchanged
Evelyn Partners Asset Management Ltd84$91.8K0.02%00.0%Unchanged
Contravisory Investment Management, Inc.85$92.9K0.02%+85New
Bradley & Co. Private Wealth Management, LLC85$93.1K0.05%+85New
Meeder Asset Management Inc86$94.0K0.01%−14,595−99.4%Reduced
Optiver Holding B.V.89$97.3K0.00%+89New
Harbour Investments, Inc.93$102.5K0.00%+16+20.8%Added
Principia Wealth Advisory, LLC95$103.9K0.06%−7−6.9%Reduced
IFP Advisors, Inc104$113.7K0.00%+5+5.1%Added
Essex Investment Management Co LLC120$131.2K0.02%00.0%Unchanged
Avalon Trust Co125$136.7K0.01%00.0%Unchanged
Reyes Financial Architecture, Inc.129$141.0K0.12%+26+25.2%Added
Montag A & Associates Inc130$142.4K0.01%00.0%Unchanged
Quent Capital, LLC132$144.6K0.01%+25+23.4%Added
Covestor Ltd132$145.0K0.10%+92+230.0%Added
Zions Bancorporation, National Association133$145.4K0.01%−48−26.5%Reduced