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Disclosery

MPWR MONOLITHIC PWR SYS INC

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Stock (common), issuer CIK 1280452

958 managers (984 13F filers) reported a position in MPWR shares at 2025-09-30, 46,836,663 shares in all. 153 filers opened a position and 75 filers sold out during the quarter.

Managers
958
13F filers
984
New
153
Added
361
Reduced
318
Sold out
75
Shares held by filers
46,836,663

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, Q3 2025

Filers in the available 13F reports with a share position at 2025-09-30, 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
Achmea Investment Management B.V.in group Achmea Investment Management …12,808$11.8M0.15%013F-HRTimelineGroup
FJARDE AP-FONDEN /FOURTH SWEDISH NATION…12,798$11.8M0.1%-1,20013F-HRTimeline
Cullen/Frost Bankers, Inc.in group Cullen/Frost Bankers, Inc.12,762$11.7M0.14%+9,71313F-HRTimelineGroup
HANTZ FINANCIAL SERVICES, INC.12,645$11.6M0.18%-1,65313F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
BOKF, NAin group BOKF, NA12,630$11.6M0.17%+6,48013F-HRTimelineGroup
Cetera Investment Advisers12,565$11.6M0.01%+3,62713F-HRTimeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC12,428$11.4M0.04%+35413F-HRTimelineGroup
Czech National Bank12,164$11.2M0.08%+46113F-HRTimeline
Nicholas Investment Partners, LP11,912$11M0.84%013F-HRTimeline
Silvant Capital Management LLC11,892$10.9M0.38%-1,12413F-HR/ATimeline
Focus Partners Wealthin group Focus Partners Wealth11,873$10.9M0.02%+10,43313F-HRTimelineGroup
US BANCORP \DE\in group US BANCORP \DE\11,752$10.8M0.01%-32613F-HRTimelineGroup
QUEST INVESTMENT MANAGEMENT LLC11,745$10.8M1.13%-1,42513F-HRTimeline
NewEdge Advisors, LLC11,727$10.8M0.05%+2,34413F-HRTimeline
Lansforsakringar Fondforvaltning AB (pu…11,544$10.6M0.05%+92713F-HRTimeline
State of Tennessee, Department of Treas…11,540$10.6M0.04%-4,76313F-HRTimeline
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…11,501$10.6M0.05%-24213F-HRTimeline
XPONANCE LLC11,222$10.3M0.08%-12813F-HRTimeline
COMERICA BANK10,906$10M0.04%+1,00013F-HRTimeline
Mariner, LLCin group Mariner, LLC10,861$10M0.01%-37913F-HRTimelineGroup
STOREBRAND ASSET MANAGEMENT AS10,582$9.74M0.03%+18713F-HRTimeline
NorthCrest Asset Manangement, LLC10,267$9.71M0.23%+2513F-HRTimeline
Bank Julius Baer & Co. Ltd, Zurich10,488$9.66M0.03%+4,50113F-HRTimeline
AMALGAMATED BANK10,454$9.62M0.07%+14813F-HRTimeline
UniSuper Management Pty Ltd10,374$9.55M0.06%-24713F-HRTimeline
Daiwa Securities Group Inc.in group Daiwa Securities Group Inc.10,229$9.42M0.03%+69313F-HRTimelineGroup
Retirement Systems of Alabama10,217$9.41M0.03%-5913F-HRTimeline
BLAIR WILLIAM & CO/IL10,182$9.37M0.02%+1,19513F-HRTimeline
KBC Group NVin group KBC Group NV9,866$9.08M0.02%-7,44713F-HRTimelineGroup
Larson Financial Group LLC9,854$9.07M0.32%+6313F-HRTimeline
Man Group plcin group Man Group plc9,739$8.97M0.02%-17,02213F-HRTimelineGroup
USS Investment Management Ltd9,663$8.89M0.04%013F-HRTimeline
BLB&B Advisors, LLC9,581$8.82M0.38%+37613F-HRTimeline
Tidal Investments LLCin group Tidal Investments LLC9,507$8.75M0.04%+1,55413F-HRTimelineGroup
Stratos Wealth Partners, LTD.in group Stratos Wealth Partners, LTD.9,395$8.65M0.1%+21713F-HRTimelineGroup
LEVEL FOUR ADVISORY SERVICES, LLCin group LEVEL FOUR ADVISORY SERVICES,…9,386$8.64M0.3%-1,22913F-HRTimelineGroup
Stanley-Laman Group, Ltd.9,235$8.5M1.21%new13F-HRTimeline
Balyasny Asset Management L.P.in group Balyasny Asset Management9,159$8.43M0.02%new13F-HRTimelineGroup
OPPENHEIMER ASSET MANAGEMENT INC.group of 2 filers holding9,041$8.32M-326Timeline
Harvest Fund Management Co., Ltdin group Harvest Fund Management Co., …8,946$8.22M0.35%+1,00813F-HRTimelineGroup
IFM Investors Pty Ltd9,175$8.14M0.07%+3513F-HRTimeline
CARDEROCK CAPITAL MANAGEMENT INC8,523$7.85M1.91%+2,85613F-HRTimeline
Inspire Investing, LLCin group Inspire Investing, LLC8,361$7.7M0.75%+27113F-HRTimelineGroup
MERCER GLOBAL ADVISORS INC /ADV8,341$7.66M0.01%+2,64913F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC8,086$7.44M0.01%new13F-HRTimeline
NFJ INVESTMENT GROUP, LLC7,973$7.34M0.25%-13313F-HRTimeline
Empowered Funds, LLC7,936$7.31M0.07%+2,33213F-HRTimeline
Utah Retirement Systems7,639$7.03M0.07%-5013F-HRTimeline
Police & Firemen's Retirement System of…7,443$6.85M0.06%+41913F-HRTimeline
Atlantic Union Bankshares Corpin group Atlantic Union Bankshares Corp7,339$6.76M0.13%+7,32213F-HRTimelineGroup
COMMONWEALTH EQUITY SERVICES, LLC7,249$6.67M0.01%+25313F-HRTimeline
Midwest Trust Co7,131$6.57M0.09%-12113F-HRTimeline
New York Life Investment Management LLCin group New York Life Investment Mana…6,976$6.42M0.06%-16813F-HRTimelineGroup
Verition Fund Management LLC6,939$6.39M0.04%-3,35613F-HRTimeline
MACKENZIE FINANCIAL CORP6,904$6.36M0.01%-10013F-HRTimeline
FIRST FOUNDATION ADVISORSin group FIRST FOUNDATION ADVISORS6,899$6.35M0.23%-71513F-HRTimelineGroup
BRITISH COLUMBIA INVESTMENT MANAGEMENT …6,881$6.33M0.04%-65313F-HRTimeline
SATURNA CAPITAL CORP6,781$6.24M0.08%+1,00713F-HRTimeline
CIBC Asset Management Inc6,618$6.09M0.02%+1313F-HRTimeline
AMERICAN CAPITAL MANAGEMENT INC6,610$6.09M0.24%-40513F-HRTimeline
4D Advisors, LLC6,500$5.98M3.19%-4,50013F-HRTimeline
Federation des caisses Desjardins du Qu…6,466$5.95M0.02%+9213F-HRTimeline
Aware Super Pty Ltd as trustee of Aware…6,426$5.92M0.08%-5,07913F-HRTimeline
PFG Advisors6,423$5.91M0.24%+44913F-HRTimeline
Walleye Capital LLCgroup of 2 filers holding6,401$5.89M+5,359Timeline
SYNOVUS FINANCIAL CORP6,347$5.84M0.07%+20413F-HRTimeline
FIRST AMERICAN TRUST, FSB6,334$5.83M0.42%-313F-HRTimeline
QRG CAPITAL MANAGEMENT, INC.6,193$5.7M0.07%-76613F-HRTimeline
Sumitomo Mitsui DS Asset Management Com…in group SUMITOMO MITSUI FINANCIAL GRO…6,082$5.6M0.05%+7513F-HRTimelineGroup
MUTUAL OF AMERICA CAPITAL MANAGEMENT LLCin group MUTUAL OF AMERICA CAPITAL MAN…6,074$5.59M0.06%+4613F-HRTimelineGroup
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …6,037$5.53M0.01%+54013F-HRTimelineGroup
HB Wealth Management, LLC5,983$5.51M0.04%-8413F-HRTimeline
Ethic Inc.5,862$5.4M0.09%-99013F-HRTimeline
MML INVESTORS SERVICES, LLC5,858$5.39M0.01%-67613F-HRTimeline
FIRST NATIONAL BANK OF OMAHAgroup of 2 filers holding5,850$5.39MnewTimeline
TRUIST FINANCIAL CORPin group TRUIST FINANCIAL CORP5,781$5.32M0.01%+1,05013F-HRTimelineGroup
PIER 88 INVESTMENT PARTNERS LLC5,780$5.32M1%+4,77013F-HRTimeline
Knollwood Investment Advisory, LLC5,685$5.23M0.47%013F-HRTimeline
Rathbones Group PLC5,675$5.22M0.02%-2513F-HRTimeline
Concentric Capital Strategies, LP5,559$5.12M0.24%new13F-HRTimeline
Wealthfront Advisers LLC5,554$5.11M0.01%-37413F-HRTimeline
MITCHELL CAPITAL MANAGEMENT CO5,549$5.11M0.87%new13F-HRTimeline
OREGON PUBLIC EMPLOYEES RETIREMENT FUND5,475$5.04M0.07%+1,29313F-HRTimeline
Private Advisor Group, LLC5,457$5.02M0.02%-51213F-HRTimeline
WASATCH ADVISORS LP5,413$4.98M0.03%-38813F-HRTimeline
Meiji Yasuda Life Insurance Cogroup of 2 filers holding5,397$4.97M-61Timeline
YOUSIF CAPITAL MANAGEMENT, LLC5,262$4.84M0.05%-26513F-HRTimeline
KORNITZER CAPITAL MANAGEMENT INC /KS5,227$4.81M0.1%013F-HRTimeline
&PARTNERS5,182$4.78M0.03%+35113F-HRTimeline
State of Alaska, Department of Revenue5,162$4.75M0.05%-22213F-HRTimeline
Bahl & Gaynor LLC5,157$4.75M0.02%013F-HRTimeline
COLDSTREAM CAPITAL MANAGEMENT INC5,155$4.75M0.06%-213F-HRTimeline
OP Asset Management Ltd5,004$4.61M0.06%-6513F-HR/ATimeline
Parcion Private Wealth LLC4,989$4.59M0.29%-6413F-HRTimeline
AZZAD ASSET MANAGEMENT INC /ADV4,959$4.57M0.45%-7313F-HRTimeline
CCM INVESTMENT ADVISERS LLC4,912$4.52M0.45%new13F-HRTimeline
Advisors Asset Management, Inc.4,760$4.38M0.07%-1,55813F-HR/ATimeline
VIRGINIA RETIREMENT SYSTEMS ET Al4,700$4.33M0.03%-2,30013F-HRTimeline
O'SHAUGHNESSY ASSET MANAGEMENT, LLC4,682$4.31M0.03%+87713F-HRTimeline
NORDEA INVESTMENT MANAGEMENT ABin group NORDEA INVESTMENT MANAGEMENT …4,720$4.31M<0.01%+48413F-HRTimelineGroup
Tredje AP-fonden4,543$4.18M0.03%-1,80613F-HRTimeline
Davidson Capital Management Inc.4,540$4.18M0.93%-5813F-HRTimeline
KP Management LLC4,500$4.14M1.45%013F-HRTimeline
ASR Vermogensbeheer N.V.4,430$4.08M0.05%-2413F-HRTimeline
Avanza Fonder AB4,413$4.06M0.11%+60013F-HRTimeline
Trilogy Capital Inc.4,398$4.05M0.19%+42313F-HRTimeline
PARK AVENUE SECURITIES LLCin group PARK AVENUE SECURITIES LLC4,374$4.03M0.03%+26413F-HRTimelineGroup
Quantessence Capital LLC4,344$4M1.27%new13F-HRTimeline
Crossmark Global Holdings, Inc.4,298$3.96M0.06%-88313F-HRTimeline
Linden Thomas Advisory Services, LLC4,204$3.87M0.39%+3013F-HRTimeline
Empirical Financial Services, LLC d.b.a…4,177$3.85M0.08%new13F-HRTimeline
Taylor Frigon Capital Management LLC4,142$3.81M1.9%-67813F-HRTimeline
Kentucky Retirement Systemsgroup of 2 filers holding4,124$3.8M-161Timeline
Cerity Partners LLCin group Cerity Partners LLC4,101$3.78M0.01%-20113F-HRTimelineGroup
Steward Partners Investment Advisory, L…4,087$3.76M0.02%-61813F-HRTimeline
Groupe la Francaisein group Groupe la Francaise4,009$3.69M0.05%new13F-HRTimelineGroup
ARGENT CAPITAL MANAGEMENT LLC4,003$3.69M0.1%new13F-HRTimeline
Dakota Wealth Management3,998$3.68M0.07%+1,82313F-HR/ATimeline
Torray Investment Partners LLC3,957$3.64M0.49%+90313F-HRTimeline
World Investment Advisors3,924$3.61M0.07%-13213F-HRTimeline
RATIONAL ADVISORS, INC.3,900$3.59M0.36%new13F-HRTimeline
BI Asset Management Fondsmaeglerselskab…in group BI Asset Management Fondsmaeg…3,874$3.57M0.03%+1,79513F-HRTimelineGroup
TEACHERS RETIREMENT SYSTEM OF THE STATE…3,806$3.5M0.03%013F-HRTimeline
HighTower Advisors, LLC3,778$3.48M<0.01%-59713F-HRTimeline
BANK OF NOVA SCOTIAin group BANK OF NOVA SCOTIA3,776$3.48M0.01%-23,58913F-HRTimelineGroup
Motley Fool Asset Management LLCin group Motley Fool Asset Management …3,757$3.46M0.14%+2,44913F-HRTimelineGroup
Summit Trail Advisors, LLC3,727$3.44M0.05%+72313F-HRTimeline
NORTHWESTERN MUTUAL INVESTMENT MANAGEME…group of 2 filers holding3,720$3.42M+1,078Timeline
Redhawk Wealth Advisors, Inc.3,676$3.38M0.39%-4413F-HRTimeline
Calamos Advisors LLCgroup of 2 filers holding3,658$3.37M+885Timeline
MV CAPITAL MANAGEMENT, INC.3,636$3.35M0.32%+3,59713F-HRTimeline
WEALTH ENHANCEMENT ADVISORY SERVICES, L…3,506$3.31M0.01%+9413F-HRTimeline
Coppell Advisory Solutions LLC3,706$3.29M0.35%new13F-HRTimeline
PEAPACK GLADSTONE FINANCIAL CORP3,505$3.23M0.04%-20613F-HRTimeline
Orion Porfolio Solutions, LLC3,462$3.19M0.02%-29113F-HRTimeline
GUIDANCE CAPITAL, INC2,946$3.17M0.83%-1613F-HRTimeline
Harfst & Associates, Inc.3,439$3.17M0.58%+313F-HRTimeline
Hennion & Walsh Asset Management, Inc.3,435$3.16M0.11%+78613F-HRTimeline
INTRUST BANK NA3,414$3.14M0.26%-7813F-HRTimeline
Leelyn Smith, LLC3,413$3.14M0.47%+8913F-HRTimeline
Investors Towarzystwo Funduszy Inwestyc…3,387$3.12M1.25%-19813F-HRTimeline
GUGGENHEIM CAPITAL LLCin group GUGGENHEIM CAPITAL LLC3,382$3.11M0.02%+7813F-HRTimelineGroup
Values First Advisors, Inc.3,357$3.09M1.65%-5413F-HRTimeline
Hudson Bay Capital Management LPin group Hudson Bay Capital Management…3,338$3.07M0.02%new13F-HR/ATimelineGroup
Oak Harvest Investment Services3,267$3.01M0.35%+84813F-HRTimeline
BOSTON FAMILY OFFICE LLC3,247$2.99M0.19%+73313F-HRTimeline
PROFUND ADVISORS LLC3,242$2.98M0.1%+11713F-HRTimeline
Catalyst Funds Management Pty Ltd3,175$2.92M0.44%+1,00013F-HRTimeline
MIZUHO SECURITIES USA LLCin group MIZUHO FINANCIAL GROUP INC3,488$2.92M0.06%+17613F-HRTimelineGroup
Modern Wealth Management, LLC3,111$2.86M0.06%+513F-HRTimeline
Kestra Advisory Services, LLCgroup of 2 filers holding3,111$2.86M-379Timeline
Paragon Advisors, LLC3,103$2.86M0.74%-1,50413F-HRTimeline
OMERS ADMINISTRATION Corp3,015$2.78M0.02%013F-HRTimeline
GROUP ONE TRADING LLC3,006$2.77M0.08%+1,34313F-HRTimeline
PRUDENTIAL PLCin group PRUDENTIAL PLC3,001$2.76M0.02%+74013F-HRTimelineGroup
Banque Cantonale Vaudoisein group Banque Cantonale Vaudoise2,974$2.74M0.1%+1,20013F-HRTimelineGroup
Triasima Portfolio Management inc.2,930$2.7M0.41%new13F-HRTimeline
GKV Capital Management Co., Inc.2,920$2.69M1.06%+4513F-HRTimeline
Thrive Capital Management, LLC2,859$2.63M0.68%-613F-HRTimeline
Atria Investments, Inc2,805$2.58M0.03%-16113F-HRTimeline
HARTFORD INVESTMENT MANAGEMENT CO2,803$2.58M0.08%-8313F-HRTimeline
RFG Advisory, LLC2,790$2.57M0.05%-2,42613F-HRTimeline
LBP AM SA2,775$2.55M0.03%+41013F-HRTimeline
Global X Japan Co., Ltd.2,747$2.53M0.22%-1,32613F-HRTimeline
Stiles Financial Services Inc2,687$2.47M0.78%+48213F-HRTimeline
Sunpointe, LLC2,662$2.45M0.89%new13F-HRTimeline
COMMERCE BANKin group COMMERCE BANK2,666$2.45M0.01%+3813F-HRTimelineGroup
Arax Advisory Partners2,651$2.44M0.04%+1,22813F-HRTimeline
SIRIOS CAPITAL MANAGEMENT L P2,645$2.44M0.32%-67313F-HRTimeline
LANDSCAPE CAPITAL MANAGEMENT, L.L.C.in group LANDSCAPE CAPITAL MANAGEMENT,…2,591$2.39M0.15%+1,38613F-HRTimelineGroup
Peak Retirement Planning, Inc.2,577$2.37M0.67%+37113F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…2,576$2.37M0.07%+2,13413F-HRTimelineGroup
Norinchukin Bank, Thein group Norinchukin Bank, The2,549$2.35M0.03%+6013F-HRTimelineGroup
Louisiana State Employees Retirement Sy…2,500$2.3M0.04%013F-HRTimeline
GREENUP STREET WEALTH MANAGEMENT LLC2,477$2.28M0.35%-5013F-HRTimeline
Gulf International Bank (UK) Ltd2,449$2.25M0.07%-2313F-HRTimeline
Sequoia Financial Advisors, LLC2,410$2.22M0.01%+2213F-HRTimeline
Cambridge Investment Research Advisors,…2,400$2.21M0.01%+19513F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC2,336$2.15M0.02%-46413F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…2,319$2.14M<0.01%new13F-HRTimelineGroup
SECURIAN ASSET MANAGEMENT, INC2,311$2.13M0.06%-18613F-HRTimeline
Maryland State Retirement & Pension Sys…2,308$2.12M0.04%+11313F-HRTimeline
VALLEY NATIONAL ADVISERS INC2,295$2.11M0.33%-1713F-HRTimeline
Investment Management Corp of Ontario2,282$2.1M0.03%+56313F-HRTimeline
Boston Partnersin group Boston Trust Walden Corp2,251$2.07M<0.01%-2,40813F-HRTimelineGroup
OSSIAM2,250$2.07M0.03%+24413F-HRTimeline
Jefferies Financial Group Inc.in group Jefferies Financial Group Inc.2,246$2.07M0.02%new13F-HRTimelineGroup
CreativeOne Wealth, LLCin group CreativeOne Wealth, LLC2,240$2.06M0.05%-1,10813F-HRTimelineGroup
Raiffeisen Bank International AGin group Raiffeisen Bank International…2,318$2.06M0.03%+1,16013F-HRTimelineGroup
UNITED CAPITAL FINANCIAL ADVISORS, LLCin group UNITED CAPITAL FINANCIAL ADVI…2,225$2.05M0.01%+99113F-HRTimelineGroup
M&T Bank Corpin group M&T Bank Corp2,225$2.05M0.01%-43913F-HRTimelineGroup
Liontrust Investment Partners LLP2,209$2.03M0.03%-6813F-HR/ATimeline
NEW MEXICO EDUCATIONAL RETIREMENT BOARD2,200$2.02M0.06%-10013F-HRTimeline
Penserra Capital Management LLCin group Penserra Capital Management L…2,191$2.02M0.02%+1,03113F-HRTimelineGroup
Generali Investments, Management Co LLC2,174$2M0.42%+1,31313F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP2,231$1.98M<0.01%+26913F-HRTimelineGroup
REGIONS FINANCIAL CORPin group REGIONS FINANCIAL CORP2,144$1.97M0.01%-8513F-HR/ATimelineGroup
GTS SECURITIES LLC2,134$1.96M0.08%+1,68313F-HRTimeline
Metis Global Partners, LLC2,121$1.95M0.05%-10613F-HRTimeline
Confluence Wealth Services, Inc.2,097$1.93M0.1%+3013F-HRTimeline