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Disclosery

MPWR MONOLITHIC PWR SYS INC

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Stock (common), issuer CIK 1280452

1,086 managers (1,124 13F filers) reported a position in MPWR shares at 2026-03-31, 47,264,132 shares in all. 159 filers opened a position and 104 filers sold out during the quarter.

Managers
1,086
13F filers
1,124
New
159
Added
385
Reduced
408
Sold out
104
Shares held by filers
47,264,132

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
CWA Asset Management Group, LLC244$267K0.01%+2113F-HRTimeline
Keel Point, LLC243$266K0.02%-9313F-HRTimeline
PDS Planning, Inc243$266K0.02%+613F-HRTimeline
MassMutual Private Wealth & Trust, FSB243$266K0.01%-2113F-HRTimeline
Virtue Capital Management, LLC264$265K0.04%-11113F-HRTimeline
Pallas Capital Advisors LLC242$264K0.01%-2913F-HRTimeline
DEARBORN PARTNERS LLC240$262K0.01%-7513F-HRTimeline
PRELUDE CAPITAL MANAGEMENT, LLC240$262K0.02%-8213F-HRTimeline
Wall Street Financial Group, Inc.239$261K0.15%+713F-HRTimeline
Corundum Group, Inc.237$259K0.09%-4713F-HRTimeline
Summit Creek Advisors LLC236$258K0.05%013F-HRTimeline
FIDELIS CAPITAL PARTNERS, LLC236$258K0.02%new13F-HRTimeline
Alpha Family Trustin group Alpha Family Trust235$257K0.12%013F-HRTimelineGroup
BAM Wealth Management, LLC235$257K0.19%-6413F-HRTimeline
BEESE FULMER INVESTMENT MANAGEMENT, INC.234$256K0.02%-6413F-HRTimeline
Jacobi Capital Management LLC232$254K0.01%-8013F-HRTimeline
CVA Family Office, LLC232$254K0.03%+1213F-HRTimeline
NEW WAVE WEALTH ADVISORS LLC230$252K0.09%new13F-HRTimeline
GARDNER LEWIS ASSET MANAGEMENT L P229$250K0.05%new13F-HRTimeline
Ascent Group, LLCin group Ascent Group, LLC228$249K0.01%new13F-HRTimelineGroup
First Bank & Trust226$247K0.04%-5613F-HRTimeline
Autumn Glory Partners, LLC226$247K0.09%+313F-HRTimeline
May Hill Capital, LLC226$247K0.06%+513F-HRTimeline
Alta Advisers Ltdin group Alta Advisers Ltd225$246K0.09%013F-HRTimelineGroup
Sustainable Insight Capital Management,…222$243K0.08%013F-HRTimeline
CenterBook Partners LP222$243K0.01%new13F-HRTimeline
Graetz Wealth LLC218$238K0.21%-4713F-HRTimeline
TOWNSQUARE CAPITAL LLC215$235K0.05%new13F-HRTimeline
CONNING INC.in group CONNING INC.214$234K0.01%-2913F-HRTimelineGroup
WOODWARD DIVERSIFIED CAPITAL, LLC159$233K0.11%new13F-HRTimeline
Fisher Asset Management, LLC212$232K<0.01%-2613F-HRTimeline
Catalyst Funds Management Pty Ltd211$231K0.04%new13F-HRTimeline
Chesley Taft & Associates LLC209$229K0.01%new13F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC209$229K<0.01%-6,74413F-HRTimeline
DIVERSIFIED TRUST CO209$229K<0.01%new13F-HRTimeline
Graves Light Lenhart Wealth, Inc.205$224K0.02%new13F-HRTimeline
DGS Capital Management, LLCin group DGS Capital Management, LLC204$223K0.04%new13F-HRTimelineGroup
LeConte Wealth Management, LLC204$223K0.14%new13F-HRTimeline
GM Advisory Group, LLC203$222K0.01%new13F-HRTimeline
Advisors Capital Management, LLC203$222K<0.01%new13F-HRTimeline
Abel Hall, LLC202$221K0.05%new13F-HRTimeline
Csenge Advisory Group201$220K0.01%new13F-HRTimeline
Firsthand Capital Management, Inc.200$219K0.47%013F-HRTimeline
Balefire, LLC200$219K0.04%new13F-HRTimeline
CHILDRESS CAPITAL ADVISORS, LLC199$218K0.04%new13F-HRTimeline
TruNorth Capital Management, LLC199$218K0.04%new13F-HRTimeline
Calydon Capital198$216K0.04%new13F-HRTimeline
MASTERINVEST Kapitalanlage GmbH198$216K0.02%new13F-HRTimeline
WEALTH ALLIANCE, LLC198$216K0.02%new13F-HRTimeline
New Age Alpha Advisors, LLC197$215K0.01%-713F-HRTimeline
LRI Investments, LLC197$215K0.02%+913F-HRTimeline
LVW Advisors, LLC196$214K0.02%new13F-HRTimeline
AlTi Global, Inc.in group AlTi Global, Inc.195$214K<0.01%-5713F-HRTimelineGroup
HARRELL INVESTMENT PARTNERS, LLC194$212K0.05%new13F-HRTimeline
Red Wave Investments LLC194$212K0.06%new13F-HRTimeline
WEDBUSH SECURITIES INC194$212K0.01%new13F-HRTimeline
Sepio Capital, LP193$211K0.01%new13F-HRTimeline
ProCore Advisors, LLC193$211K0.32%new13F-HRTimeline
Diversified Enterprises, LLC193$211K0.01%-5013F-HRTimeline
GREAT VALLEY ADVISOR GROUP, INC.in group GREAT VALLEY ADVISOR GROUP, I…192$210K<0.01%new13F-HRTimelineGroup
BankChampaign, National Association192$210K0.21%new13F-HRTimeline
Pinnacle Wealth Planning Services, Inc.191$209K0.02%-113F-HRTimeline
Bayforest Capital Ltd191$209K0.23%+12213F-HRTimeline
Signal Advisors Wealth, LLC189$207K0.01%new13F-HRTimeline
Pure Financial Advisors, LLC188$206K<0.01%new13F-HRTimeline
E Fund Management (Hong Kong) Co., Ltd.187$204K0.09%+4913F-HRTimeline
Alliance Wealth Advisors, LLC /UT187$204K0.04%-4913F-HRTimeline
ROMAN BUTLER FULLERTON & CO155$203K0.06%new13F-HRTimeline
Moss Adams Wealth Advisors LLC185$203K0.01%new13F-HRTimeline
Revolve Wealth Partners, LLC185$202K0.03%new13F-HRTimeline
BlackDiamond Wealth Management, LLC184$201K0.1%new13F-HRTimeline
CFS Investment Advisory Services, LLC137$201K0.01%new13F-HRTimeline
Quotient Wealth Partners, LLC184$201K0.01%new13F-HRTimeline
Quadrant Private Wealth Management, LLC183$200K0.03%new13F-HRTimeline
Gilliland Jeter Wealth Management LLC183$200K0.06%new13F-HRTimeline
FERGUSON WELLMAN CAPITAL MANAGEMENT, INC183$200K<0.01%new13F-HRTimeline
Invera Wealth Advisors, LLC183$200K0.13%new13F-HRTimeline
SBI Okasan Asset Management Co.Ltd.193$193K0.01%+11313F-HRTimeline
YANKCOM Partnership173$189K0.08%-313F-HRTimeline
ROTHSCHILD INVESTMENT LLC164$179K0.01%+713F-HRTimeline
Leonteq Securities AG163$178K0.01%-6913F-HRTimeline
Wilkerson Advisory Group LLC147$161K0.06%-12313F-HRTimeline
Capital Analysts, LLCin group Capital Analysts, LLC146$160K<0.01%013F-HRTimelineGroup
Cromwell Holdings LLC143$157K0.09%013F-HRTimeline
Aventura Private Wealth, LLC142$155K0.06%013F-HRTimeline
Park Place Capital Corp138$151K0.03%-213F-HRTimeline
Basecamp Wealth Advisors LLC134$147K0.03%013F-HRTimeline
CYBER HORNET ETFs LLC130$145K0.09%-713F-HRTimeline
ZIONS BANCORPORATION, NATIONAL ASSOCIAT…133$145K0.01%-4813F-HRTimeline
Covestor Ltd132$145K0.1%+9213F-HRTimeline
Quent Capital, LLC132$145K0.01%+2513F-HRTimeline
MONTAG A & ASSOCIATES INC130$142K0.01%013F-HRTimeline
Reyes Financial Architecture, Inc.129$141K0.12%+2613F-HRTimeline
Avalon Trust Co125$137K0.01%013F-HRTimeline
ESSEX INVESTMENT MANAGEMENT CO LLC120$131K0.02%013F-HRTimeline
IFP Advisors, Inc104$114K<0.01%+513F-HRTimeline
Principia Wealth Advisory, LLC95$104K0.06%-713F-HRTimeline
HARBOUR INVESTMENTS, INC.93$102K<0.01%+1613F-HRTimeline
Optiver Holding B.V.in group Optiver Holding B.V.89$97.3K<0.01%new13F-HR/ATimelineGroup
Bradley & Co. Private Wealth Management…85$93.1K0.05%new13F-HRTimeline
CONTRAVISORY INVESTMENT MANAGEMENT, INC.85$92.9K0.02%new13F-HRTimeline
Evelyn Partners Asset Management Ltdin group Evelyn Partners Group Ltd84$91.8K0.02%013F-HRTimelineGroup
TOWARZYSTWO FUNDUSZY INWESTYCYJNYCH PZU…82$89.7K0.03%013F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
FIRST HORIZON CORP75$82K<0.01%-213F-HRTimeline
PENSION & WEALTH MANAGEMENT ADVISORS, I…72$80.3K0.02%-913F-HRTimeline
Migdal Insurance & Financial Holdings L…in group Migdal Insurance & Financial …72$78.7K<0.01%013F-HRTimelineGroup
Timothy G. Youngquist 2020 Irrevocable …71$77.6K0.04%new13F-HRTimeline
Owl Creek Wealth Partners LLC71$77.6K0.03%13F-HRTimeline
PRIVATE TRUST CO NA67$73.3K0.01%-613F-HRTimeline
Rossby Financial, LCC64$71.6K0.01%+5913F-HRTimeline
Cornerstone Planning Group LLC46$71.6K0.01%+213F-HRTimeline
Golden State Wealth Management, LLC64$70K0.01%013F-HRTimeline
Geneos Wealth Management Inc.63$68.9K<0.01%+613F-HRTimeline
AdvisorNet Financial, Inc60$65.6K<0.01%013F-HRTimeline
Root Financial Partners, LLC60$65.6K<0.01%+213F-HRTimeline
TRUST CO OF TOLEDO NA /OH/56$61.2K0.01%-1013F-HRTimeline
Opal Wealth Advisors, LLC55$60.1K0.01%new13F-HRTimeline
GW&K Investment Management, LLC50$55K<0.01%-113F-HRTimeline
WPG Advisers, LLC50$54.7K0.04%-913F-HRTimeline
DELTA ASSET MANAGEMENT LLC/TN49$53.6K<0.01%013F-HRTimeline
Solstein Capital, LLC49$53.6K0.02%-513F-HRTimeline
Fourth Dimension Wealth, LLC49$53.6K0.02%013F-HRTimeline
Bell Investment Advisors, Inc47$51.4K0.01%+913F-HRTimeline
Legacy Wealth Managment, LLC/IDin group Legacy Wealth Managment, LLC/…46$50.3K0.03%+313F-HRTimelineGroup
Essential Partners LLC43$47K0.02%+1013F-HRTimeline
Sunbelt Securities, Inc.40$43.7K<0.01%+2813F-HRTimeline
CAPITAL & PLANNING, LLC40$43.7K0.03%new13F-HRTimeline
THURSTON, SPRINGER, MILLER, HERD & TITA…38$41.5K0.02%013F-HRTimeline
Strategic Advocates LLC37$40.5K0.18%new13F-HRTimeline
Salomon & Ludwin, LLC36$40.3K<0.01%013F-HRTimeline
Ancora Advisors LLCin group Ancora Advisors LLC34$37.2K<0.01%+413F-HRTimelineGroup
Tradewinds Capital Management, LLC34$37.2K0.01%013F-HRTimeline
SJS Investment Consulting Inc.31$33.9K<0.01%+213F-HRTimeline
WOLFF WIESE MAGANA LLC30$32.8K0.02%013F-HRTimeline
TWIN PEAKS WEALTH ADVISORS, LLC30$32.8K0.01%new13F-HRTimeline
Provenance Wealth Advisors, LLC30$32.8K<0.01%013F-HRTimeline
FARMERS & MERCHANTS INVESTMENTS INCin group FARMERS & MERCHANTS INVESTMEN…29$31.7K<0.01%013F-HRTimelineGroup
Ares Financial Consulting, LLC27$30.2K0.02%013F-HRTimeline
Transamerica Financial Advisors, LLCin group Transamerica Financial Adviso…26$28.7K<0.01%+1113F-HRTimelineGroup
True Wealth Design, LLC26$28.4K0.01%-313F-HRTimeline
SFAM, LLC26$28.4K0.03%013F-HRTimeline
Tidemark, LLC25$27.4K0.01%+113F-HRTimeline
Anchor Investment Management, LLC25$27.3K<0.01%013F-HRTimeline
Ulland Investment Advisors, LLC25$27K0.02%013F-HRTimeline
Financial Perspectives, Inc24$26.7K0.01%013F-HRTimeline
Clark Wealth Partners24$26.3K0.02%+213F-HRTimeline
First Command Advisory Services, Inc.23$25.2K<0.01%+413F-HRTimeline
Westfuller Advisors, LLC21$23.3K0.01%013F-HRTimeline
Innovative Asset Advisors Group, LLC21$23K0.01%13F-HRTimeline
Private Wealth Management Group, LLC21$23K0.01%013F-HRTimeline
SHP Wealth Management21$22.9K<0.01%+613F-HRTimeline
Financial Management Professionals, Inc.20$21.9K<0.01%new13F-HRTimeline
Bogart Wealth, LLC20$21.9K<0.01%013F-HRTimeline
Fortitude Family Office, LLC20$21.9K<0.01%+613F-HRTimeline
Smithfield Trust Co20$21K<0.01%+413F-HRTimeline
MORGAN DEMPSEY CAPITAL MANAGEMENT LLC19$20.8K0.01%013F-HRTimeline
JFS WEALTH ADVISORS, LLC19$20.8K<0.01%-113F-HRTimeline
Kemnay Advisory Services Inc.19$20.8K<0.01%+113F-HRTimeline
Center for Financial Planning, Inc.19$20.8K<0.01%013F-HRTimeline
REXFORD CAPITAL INC19$20.8K0.01%013F-HRTimeline
Physician Wealth Advisors, Inc.18$19.7K<0.01%013F-HRTimeline
United Financial Planning Group LLC18$19.7K0.01%+1113F-HRTimeline
Portus Wealth Advisors, LLC18$19.7K0.02%new13F-HRTimeline
Sachetta, LLC17$18.6K0.01%+113F-HRTimeline
HARBOR INVESTMENT ADVISORY, LLC17$18.6K<0.01%-413F-HRTimeline
SWISS RE LTDin group SWISS RE LTD17$18.6K0.11%013F-HRTimelineGroup
First Pacific Financial17$18.6K<0.01%+613F-HRTimeline
Avion Wealth16$17K<0.01%013F-HRTimeline
Intentional Wealth Strategies, LLC15$16.4K0.02%13F-HRTimeline
Sound Income Strategies, LLC14$15.7K<0.01%013F-HRTimeline
ARMSTRONG ADVISORY GROUP, INC14$15.5K<0.01%-1613F-HRTimeline
Signature Equity Partners, LLC14$15.4K0.01%-5613F-HRTimeline
ATWOOD & PALMER INC14$15.3K<0.01%+213F-HRTimeline
Pacific Center for Financial Services14$15.3K<0.01%013F-HRTimeline
HAGER INVESTMENT MANAGEMENT SERVICES, L…14$15.3K0.01%+513F-HRTimeline
WEBSTER BANK, N. A.12$13.1K<0.01%013F-HRTimeline
LORING WOLCOTT & COOLIDGE FIDUCIARY ADV…9$12.2K<0.01%013F-HRTimeline
Manchester Capital Management LLC11$12K<0.01%013F-HRTimeline
Cedar Mountain Advisors, LLC11$12K<0.01%new13F-HRTimeline
Cetera Trust Company, N.A11$12K0.01%013F-HRTimeline
WealthCollab, LLC11$12K<0.01%+113F-HRTimeline
HIGHLINE WEALTH PARTNERS LLC11$12K<0.01%-313F-HRTimeline
RMG Wealth Management LLC7$11.6K<0.01%new13F-HRTimeline
BERKSHIRE CAPITAL HOLDINGS INC10$10.9K<0.01%013F-HRTimeline
Marquette Asset Management, LLC10$10.9K<0.01%+513F-HRTimeline
Crewe Advisors LLC10$10.9K<0.01%013F-HRTimeline
IAG Wealth Partners, LLC10$10.9K<0.01%013F-HRTimeline
JPL Wealth Management, LLC9$9.86K<0.01%new13F-HR/ATimeline
SouthState Bank Corpin group SouthState Bank Corp9$9.84K<0.01%-1313F-HRTimelineGroup
Asset Dedication, LLC9$9.84K<0.01%013F-HRTimeline
Clearstead Trust, LLC9$9.84K<0.01%013F-HRTimeline
Activest Wealth Management9$9.84K<0.01%new13F-HRTimeline
Joseph Group Capital Management9$9.84K<0.01%+313F-HRTimeline
Capital Advisors, Ltd. LLC8$9K<0.01%+513F-HRTimeline
Westside Investment Management, Inc.8$8.9K<0.01%013F-HRTimeline
IFG Advisory, LLC8$8.75K0.03%new13F-HRTimeline
Steigerwald, Gordon & Koch Inc.8$8.75K<0.01%-413F-HRTimeline
ELEVATION WEALTH PARTNERS, LLC8$8.75K<0.01%013F-HRTimeline
MidFirst Bank8$8.75K<0.01%new13F-HRTimeline
McMillan Office, Inc.8$8.75K<0.01%013F-HRTimeline