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Disclosery

MPWR MONOLITHIC PWR SYS INC

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Stock (common), issuer CIK 1280452

1,032 managers (1,063 13F filers) reported a position in MPWR shares at 2025-12-31, 48,830,047 shares in all. 131 filers opened a position and 92 filers sold out during the quarter.

Managers
1,032
13F filers
1,063
New
131
Added
384
Reduced
353
Sold out
92
Shares held by filers
48,830,047

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, Q4 2025

Filers in the available 13F reports with a share position at 2025-12-31, 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
MetLife Investment Management, LLCin group MetLife Investment Management…13,692$12.4M0.06%-35813F-HRTimelineGroup
Lombard Odier Asset Management (Europe)…13,650$12.4M0.63%-31613F-HRTimeline
BLAIR WILLIAM & CO/IL13,647$12.4M0.03%+3,46513F-HRTimeline
Harvest Fund Management Co., Ltdin group Harvest Fund Management Co., …13,546$12.3M0.46%+4,60013F-HRTimelineGroup
Cullen/Frost Bankers, Inc.in group Cullen/Frost Bankers, Inc.13,314$12.1M0.13%+55213F-HRTimelineGroup
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…13,304$12.1M0.01%+11613F-HRTimelineGroup
FJARDE AP-FONDEN /FOURTH SWEDISH NATION…13,158$11.9M0.1%+36013F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM13,128$11.9M0.06%-98913F-HRTimeline
Silvant Capital Management LLC12,895$11.7M0.39%+1,00313F-HRTimeline
Cetera Investment Advisers12,794$11.6M0.01%+22913F-HRTimeline
Czech National Bank12,632$11.4M0.07%+46813F-HRTimeline
KBC Group NVin group KBC Group NV12,627$11.4M0.03%+2,76113F-HRTimelineGroup
Stephens Investment Management Group LLCgroup of 2 filers holding12,478$11.3MnewTimeline
US BANCORP \DE\in group US BANCORP \DE\12,045$10.9M0.01%+29313F-HRTimelineGroup
Nicholas Investment Partners, LP11,912$10.8M0.79%013F-HRTimeline
XPONANCE LLC11,870$10.8M0.08%+64813F-HRTimeline
Lansforsakringar Fondforvaltning AB (pu…11,699$10.6M0.05%+15513F-HRTimeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC11,674$10.6M0.04%-75413F-HRTimelineGroup
CARDEROCK CAPITAL MANAGEMENT INC11,469$10.4M2.52%+2,94613F-HRTimeline
STOREBRAND ASSET MANAGEMENT AS11,445$10.4M0.03%+86313F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC11,229$10.2M0.01%-249,23713F-HRTimelineGroup
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…11,143$10.1M0.05%-35813F-HRTimeline
NorthCrest Asset Manangement, LLC10,267$9.81M0.22%013F-HRTimeline
AMALGAMATED BANK10,815$9.8M0.07%+36113F-HRTimeline
HANTZ FINANCIAL SERVICES, INC.10,591$9.6M0.14%-2,05413F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
FNY Investment Advisers, LLC10,500$9.52M2.7%new13F-HRTimeline
LORD, ABBETT & CO. LLC10,375$9.4M0.03%-13,12513F-HRTimeline
Generate Investment Management Ltd10,331$9.36M0.43%new13F-HRTimeline
Retirement Systems of Alabama10,192$9.24M0.03%-2513F-HRTimeline
NewEdge Advisors, LLC10,144$9.19M0.03%-1,58313F-HRTimeline
Inspire Investing, LLCin group Inspire Investing, LLC10,105$9.16M0.82%+1,74413F-HRTimelineGroup
GF FUND MANAGEMENT CO. LTD.10,105$9.16M0.16%new13F-HRTimeline
Vantage Investment Partners, LLC10,097$9.15M0.61%-34,48713F-HRTimeline
Eurizon Capital SGR S.p.A.10,029$9.09M0.03%13F-HRTimeline
Larson Financial Group LLC9,985$9.05M0.3%+13113F-HRTimeline
Titan Investment Solutions Ltdin group Titan Investment Solutions Ltd9,710$8.8M1.06%13F-HRTimelineGroup
USS Investment Management Ltd9,629$8.73M0.04%-3413F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
UniSuper Management Pty Ltd9,455$8.57M0.05%-91913F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…9,430$8.55M0.21%+6,85413F-HRTimelineGroup
Bank Julius Baer & Co. Ltd, Zurich9,221$8.5M0.02%-1,26713F-HRTimeline
BOKF, NAin group BOKF, NA9,288$8.42M0.13%-3,34213F-HRTimelineGroup
BLB&B Advisors, LLC9,283$8.41M0.35%-29813F-HRTimeline
Stanley-Laman Group, Ltd.9,237$8.37M1.07%+213F-HRTimeline
Stratos Wealth Partners, LTD.in group Stratos Wealth Partners, LTD.9,189$8.33M0.09%-20613F-HRTimelineGroup
Polar Capital Holdings Plcin group Polar Capital Holdings Plc9,180$8.32M0.04%-8,85013F-HRTimelineGroup
MERCER GLOBAL ADVISORS INC /ADV8,935$8.1M0.01%+59413F-HRTimeline
OPPENHEIMER ASSET MANAGEMENT INC.group of 2 filers holding8,723$7.91M-318Timeline
QUEST INVESTMENT MANAGEMENT LLC8,515$7.72M0.83%-3,23013F-HRTimeline
BRITISH COLUMBIA INVESTMENT MANAGEMENT …8,482$7.69M0.04%+1,60113F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC6,953$7.56M0.03%-16,29213F-HRTimeline
TEACHER RETIREMENT SYSTEM OF TEXAS8,332$7.55M0.03%-5,28513F-HRTimeline
PensionDanmark Pensionsforsikringsaktie…8,250$7.48M0.07%13F-HRTimeline
BENJAMIN EDWARDS INCin group BENJAMIN EDWARDS INC7,772$7.04M0.08%new13F-HRTimelineGroup
Wealthfront Advisers LLC7,673$6.95M0.02%+2,11913F-HRTimeline
Utah Retirement Systems7,639$6.92M0.07%013F-HRTimeline
Freestone Grove Partners LP7,529$6.82M0.05%new13F-HRTimeline
MACKENZIE FINANCIAL CORP7,347$6.77M0.01%+44313F-HRTimeline
Atlantic Union Bankshares Corpin group Atlantic Union Bankshares Corp7,339$6.65M0.12%013F-HRTimelineGroup
COMERICA BANK7,317$6.63M0.03%-3,58913F-HRTimeline
LEVEL FOUR ADVISORY SERVICES, LLCin group LEVEL FOUR ADVISORY SERVICES,…7,302$6.62M0.22%-2,08413F-HRTimelineGroup
JANUS HENDERSON GROUP PLCin group Janus Henderson7,246$6.57M<0.01%-120,49213F-HRTimelineGroup
Midwest Trust Co7,206$6.53M0.08%+7513F-HRTimeline
Police & Firemen's Retirement System of…7,097$6.43M0.05%-34613F-HRTimeline
Public Sector Pension Investment Board7,095$6.43M0.02%-27,49213F-HRTimeline
PROFUND ADVISORS LLC7,091$6.43M0.2%+3,84913F-HRTimeline
CCM INVESTMENT ADVISERS LLC7,061$6.4M0.61%+2,14913F-HRTimeline
MUTUAL OF AMERICA CAPITAL MANAGEMENT LLCin group MUTUAL OF AMERICA CAPITAL MAN…6,983$6.33M0.07%+90913F-HRTimelineGroup
New York Life Investment Management LLCin group New York Life Investment Mana…6,951$6.3M0.05%-2513F-HRTimelineGroup
QRG CAPITAL MANAGEMENT, INC.6,875$6.23M0.07%+68213F-HRTimeline
SATURNA CAPITAL CORP6,781$6.15M0.08%013F-HRTimeline
Ethic Inc.6,592$5.97M0.09%+73013F-HRTimeline
Federation des caisses Desjardins du Qu…6,537$5.92M0.02%+7113F-HRTimeline
AMERICAN CAPITAL MANAGEMENT INC6,488$5.88M0.26%-12213F-HRTimeline
FIRST AMERICAN TRUST, FSB6,383$5.79M0.4%+4913F-HRTimeline
FIRST FOUNDATION ADVISORSin group FIRST FOUNDATION ADVISORS6,379$5.78M0.22%-52013F-HRTimelineGroup
Dakota Wealth Management6,218$5.64M0.1%+2,22013F-HR/ATimeline
Sumitomo Mitsui DS Asset Management Com…in group SUMITOMO MITSUI FINANCIAL GRO…6,168$5.59M0.04%+8613F-HRTimelineGroup
Raiffeisen Bank International AGin group Raiffeisen Bank International…79,825$5.59M0.07%+77,50713F-HRTimelineGroup
BI Asset Management Fondsmaeglerselskab…in group BI Asset Management Fondsmaeg…6,122$5.55M0.05%+2,24813F-HRTimelineGroup
FIRST NATIONAL BANK OF OMAHAgroup of 2 filers holding6,101$5.53M+251Timeline
HB Wealth Management, LLC6,064$5.5M0.04%+8113F-HRTimeline
PATTON FUND MANAGEMENT, INC.6,029$5.46M0.73%+5,65313F-HRTimeline
iA Global Asset Management Inc.5,956$5.4M0.07%+5,35613F-HRTimeline
Verition Fund Management LLC5,923$5.37M0.03%-1,01613F-HRTimeline
Groupe la Francaisein group Groupe la Francaise5,758$5.22M0.08%+1,74913F-HRTimelineGroup
SHELTON CAPITAL MANAGEMENT5,729$5.19M0.1%+5,46213F-HRTimeline
COMMONWEALTH EQUITY SERVICES, LLC5,727$5.19M0.01%-1,52213F-HRTimeline
O'SHAUGHNESSY ASSET MANAGEMENT, LLC5,688$5.16M0.03%+1,00613F-HRTimeline
Knollwood Investment Advisory, LLC5,685$5.15M0.48%013F-HRTimeline
Eurizon SLJ Capital Ltd5,668$5.14M2.04%13F-HRTimeline
YOUSIF CAPITAL MANAGEMENT, LLC4,961$5.13M0.06%-30113F-HRTimeline
Louisiana State Employees Retirement Sy…5,600$5.08M0.09%+3,10013F-HRTimeline
MITCHELL CAPITAL MANAGEMENT CO5,547$5.03M0.9%-213F-HRTimeline
Rathbones Group PLC5,535$5.02M0.02%-14013F-HR/ATimeline
KP Management LLC5,500$4.98M1.55%+1,00013F-HRTimeline
OREGON PUBLIC EMPLOYEES RETIREMENT FUND5,475$4.96M0.06%013F-HRTimeline
TRUIST FINANCIAL CORPin group TRUIST FINANCIAL CORP5,335$4.84M0.01%-44613F-HRTimelineGroup
Andra AP-fonden5,300$4.8M0.06%-42,81913F-HRTimeline
KORNITZER CAPITAL MANAGEMENT INC /KS5,227$4.74M0.1%013F-HRTimeline
MML INVESTORS SERVICES, LLC5,197$4.71M0.01%-66113F-HRTimeline
State of Alaska, Department of Revenue5,167$4.68M0.05%+513F-HRTimeline
OP Asset Management Ltd5,067$4.59M0.06%+6313F-HR/ATimeline
Bahl & Gaynor LLC5,042$4.57M0.02%-11513F-HRTimeline
Steward Partners Investment Advisory, L…4,995$4.53M0.02%+90813F-HRTimeline
NORDEA INVESTMENT MANAGEMENT ABin group NORDEA INVESTMENT MANAGEMENT …4,909$4.5M<0.01%+18913F-HRTimelineGroup
Janney Montgomery Scott LLC4,925$4.46M0.01%-15,55813F-HRTimeline
COLDSTREAM CAPITAL MANAGEMENT INC4,867$4.41M0.06%-28813F-HRTimeline
Parcion Private Wealth LLC4,830$4.38M0.27%-15913F-HRTimeline
AZZAD ASSET MANAGEMENT INC /ADV4,814$4.36M0.43%-14513F-HRTimeline
GREENUP STREET WEALTH MANAGEMENT LLC4,769$4.32M0.62%+2,29213F-HR/ATimeline
WEALTH ENHANCEMENT ADVISORY SERVICES, L…3,726$4.26M0.01%+22013F-HRTimeline
Empirical Financial Services, LLC d.b.a…4,699$4.26M0.08%+52213F-HRTimeline
BOSTON FAMILY OFFICE LLC4,653$4.22M0.27%+1,40613F-HRTimeline
Davidson Capital Management Inc.4,609$4.18M0.9%+6913F-HRTimeline
Private Advisor Group, LLC4,607$4.18M0.02%-85013F-HRTimeline
Tredje AP-fonden4,572$4.14M0.03%+2913F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC4,487$4.07M<0.01%-9,90113F-HRTimelineGroup
Coppell Advisory Solutions LLC4,397$4.06M0.4%+69113F-HRTimeline
Jump Financial, LLCin group Jump Financial, LLC4,445$4.03M0.05%new13F-HRTimelineGroup
Avanza Fonder AB4,413$4M0.1%013F-HRTimeline
HighTower Advisors, LLC4,394$3.98M<0.01%+61613F-HRTimeline
ASR Vermogensbeheer N.V.4,389$3.98M0.05%-4113F-HRTimeline
NFJ INVESTMENT GROUP, LLC4,375$3.97M0.14%-3,59813F-HRTimeline
&PARTNERS4,341$3.94M0.02%-84113F-HRTimeline
Norinchukin Bank, Thein group Norinchukin Bank, The4,296$3.89M0.05%+1,74713F-HRTimelineGroup
Torray Investment Partners LLC4,249$3.85M0.55%+29213F-HRTimeline
Linden Thomas Advisory Services, LLC4,233$3.84M0.39%+2913F-HRTimeline
Trilogy Capital Inc.4,214$3.82M0.17%-18413F-HRTimeline
ARGENT CAPITAL MANAGEMENT LLC4,209$3.81M0.11%+20613F-HRTimeline
Investment Management Corp of Ontario4,195$3.8M0.05%+1,91313F-HRTimeline
Kentucky Retirement Systemsgroup of 2 filers holding4,124$3.74M0Timeline
Taylor Frigon Capital Management LLC4,096$3.71M1.88%-4613F-HRTimeline
PARK AVENUE SECURITIES LLCin group PARK AVENUE SECURITIES LLC4,087$3.7M0.03%-28713F-HRTimelineGroup
BRASADA CAPITAL MANAGEMENT, LP3,939$3.69M0.63%new13F-HRTimeline
Global X Japan Co., Ltd.4,006$3.63M0.28%+1,25913F-HRTimeline
4D Advisors, LLC4,000$3.63M1.99%-2,50013F-HRTimeline
WASATCH ADVISORS LP3,931$3.56M0.02%-1,48213F-HRTimeline
Hennion & Walsh Asset Management, Inc.3,853$3.49M0.12%+41813F-HRTimeline
GTS SECURITIES LLC3,848$3.49M0.12%+1,71413F-HRTimeline
Summit Trail Advisors, LLC3,834$3.48M0.06%+10713F-HRTimeline
NORTHWESTERN MUTUAL INVESTMENT MANAGEME…group of 2 filers holding3,836$3.48M+116Timeline
TEACHERS RETIREMENT SYSTEM OF THE STATE…3,806$3.45M0.03%013F-HRTimeline
World Investment Advisors3,787$3.43M0.06%-13713F-HR/ATimeline
Mirabaud Asset Management Ltd4,881$3.41M1.58%new13F-HRTimeline
Thrive Capital Management, LLC3,740$3.39M0.76%+88113F-HRTimeline
Greenland Capital Management LP3,739$3.39M0.49%new13F-HRTimeline
Triasima Portfolio Management inc.3,697$3.35M0.5%+76713F-HRTimeline
MV CAPITAL MANAGEMENT, INC.3,671$3.33M0.32%+3513F-HRTimeline
PINKERTON WEALTH, LLC3,666$3.32M0.34%new13F-HRTimeline
Redhawk Wealth Advisors, Inc.3,600$3.26M0.37%-7613F-HRTimeline
MIZUHO SECURITIES USA LLCin group MIZUHO FINANCIAL GROUP INC3,488$3.24M0.05%013F-HRTimelineGroup
ALLSTATE CORPin group ALLSTATE CORP3,556$3.22M0.04%+1,83013F-HRTimelineGroup
Oak Harvest Investment Services3,541$3.21M0.35%+27413F-HRTimeline
PFG Advisors3,530$3.2M0.16%-2,89313F-HRTimeline
Neo Ivy Capital Management3,515$3.19M0.5%new13F-HRTimeline
Investors Towarzystwo Funduszy Inwestyc…3,458$3.13M1.19%+7113F-HRTimeline
Leelyn Smith, LLC3,419$3.1M0.45%+613F-HRTimeline
GUIDANCE CAPITAL, INC2,859$3.08M0.75%-8713F-HRTimeline
INTRUST BANK NA3,393$3.08M0.25%-2113F-HRTimeline
Calamos Advisors LLCgroup of 2 filers holding3,370$3.05M-288Timeline
EVOLVE PRIVATE WEALTH, LLC3,314$3.01M0.18%13F-HRTimeline
Harfst & Associates, Inc.3,318$3.01M0.54%-12113F-HRTimeline
Paragon Advisors, LLC3,296$2.99M0.81%+19313F-HRTimeline
Values First Advisors, Inc.3,277$2.97M1.54%-8013F-HRTimeline
Polymer Capital Management (HK) LTD3,222$2.92M0.45%new13F-HRTimeline
Cerity Partners LLCin group Cerity Partners LLC3,189$2.89M<0.01%-91213F-HRTimelineGroup
FIDEURAM - INTESA SANPAOLO PRIVATE BANK…3,184$2.89M0.1%13F-HR/ATimeline
Baker Avenue Asset Management, LP3,182$2.88M0.07%+2,58913F-HRTimeline
Modern Wealth Management, LLC3,176$2.88M0.05%+6513F-HRTimeline
Cambridge Investment Research Advisors,…3,116$2.83M0.01%+71613F-HRTimeline
Advisors Asset Management, Inc.3,110$2.82M0.05%-1,65013F-HR/ATimeline
Fideuram Asset Management (Ireland) dac4,395$2.81M0.22%13F-HRTimeline
Brooklyn Investment Group3,010$2.8M0.13%+1,78213F-HRTimeline
Peak Retirement Planning, Inc.3,041$2.76M0.65%+46413F-HRTimeline
GKV Capital Management Co., Inc.2,910$2.64M0.99%-1013F-HRTimeline
Bridgewater Associates, LP2,871$2.6M0.01%new13F-HRTimeline
Banco Santander, S.A.in group Banco Santander, S.A.2,852$2.58M0.02%+1,96013F-HRTimelineGroup
PEAPACK GLADSTONE FINANCIAL CORP2,819$2.56M0.03%-68613F-HRTimeline
Orion Porfolio Solutions, LLC2,807$2.54M0.02%-65513F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…2,789$2.53M<0.01%+47013F-HR/ATimelineGroup
Stiles Financial Services Inc2,777$2.52M0.77%+9013F-HRTimeline
HARTFORD INVESTMENT MANAGEMENT CO2,766$2.51M0.08%-3713F-HRTimeline
Merit Financial Group, LLC2,757$2.5M0.02%+1,78613F-HRTimeline
M&T Bank Corpin group M&T Bank Corp2,752$2.49M0.01%+52713F-HR/ATimelineGroup
Atria Investments, Inc2,716$2.46M0.03%-8913F-HRTimeline
Night Squared LP2,707$2.45M0.69%new13F-HRTimeline
COMMERCE BANKin group COMMERCE BANK2,705$2.45M0.01%+3913F-HRTimelineGroup
Sequoia Financial Advisors, LLC2,688$2.44M0.01%+27813F-HRTimeline
Mariner, LLCin group Mariner, LLC2,676$2.43M<0.01%-8,18513F-HRTimelineGroup
Woodline Partners LP2,640$2.39M0.01%new13F-HRTimeline
Ketron Financial2,616$2.37M0.79%13F-HRTimeline
Sunpointe, LLC2,587$2.35M0.78%-7513F-HRTimeline
Westerkirk Capital Inc.2,544$2.31M0.22%+93613F-HRTimeline
Kestra Advisory Services, LLCgroup of 2 filers holding2,503$2.27M-608Timeline
UNITED CAPITAL FINANCIAL ADVISORS, LLCin group UNITED CAPITAL FINANCIAL ADVI…2,491$2.26M0.01%+26613F-HRTimelineGroup
Osmosis Investment Management UK Ltd2,473$2.24M0.06%13F-HRTimeline
SIRIOS CAPITAL MANAGEMENT L P2,464$2.23M0.28%-18113F-HRTimeline
Metis Global Partners, LLC2,448$2.22M0.05%+32713F-HRTimeline
B. Metzler seel. Sohn & Co. AGin group B. Metzler seel. Sohn & Co. AG2,448$2.22M0.02%+77013F-HRTimelineGroup
Gulf International Bank (UK) Ltd2,446$2.22M0.07%-313F-HRTimeline