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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
Ascentis Independent Advisorsin group Ascentis Wealth Management, L…8$8.75K<0.01%new13F-HRTimelineGroup
Financial Network Wealth Advisors LLC7$7.7K0.01%013F-HRTimeline
SOUTHERN MICHIGAN BANK & TRUST7$7.65K<0.01%13F-HRTimeline
COUNTRY TRUST BANK7$7.65K<0.01%+513F-HRTimeline
Elequin Capital, LP7$7.65K<0.01%new13F-HRTimeline
Dunhill Financial, LLC6$7.52K<0.01%013F-HRTimeline
BROWN, LISLE/CUMMINGS, INC.7$7.22K<0.01%+413F-HRTimeline
Scarborough Advisors, LLC6$6.58K<0.01%new13F-HRTimeline
Mowery & Schoenfeld Wealth Management, …6$6.58K0.01%-313F-HRTimeline
PROFFITT & GOODSON INC6$6.56K<0.01%013F-HRTimeline
Kilter Group LLC6$6.56K<0.01%013F-HRTimeline
Destiny Wealth Partners, LLC6$6.56K<0.01%new13F-HRTimeline
Synergy Investment Management, LLC6$6.56K<0.01%new13F-HRTimeline
BARTLETT & CO. WEALTH MANAGEMENT LLC4$6.29K<0.01%-313F-HRTimeline
Cranbrook Wealth Management, LLC5$5.68K<0.01%013F-HRTimeline
Kozak & Associates, Inc.4$5.57K<0.01%013F-HRTimeline
Torren Management, LLC5$5.51K<0.01%-4913F-HRTimeline
PFS Partners, LLC5$5.5K<0.01%013F-HRTimeline
Prestige Wealth Management Group LLC5$5.48K<0.01%013F-HRTimeline
CHILTON CAPITAL MANAGEMENT LLC5$5.47K<0.01%new13F-HRTimeline
North Star Investment Management Corp.5$5.47K<0.01%-213F-HRTimeline
HOEY INVESTMENTS, INC5$5.47K<0.01%013F-HRTimeline
Imprint Wealth LLC5$5.47K0.02%013F-HRTimeline
Nemes Rush Group LLC5$5.47K<0.01%013F-HRTimeline
DiNuzzo Private Wealth, Inc.5$5.47K<0.01%013F-HRTimeline
Bruce G. Allen Investments, LLC5$5.47K<0.01%013F-HRTimeline
Hughes Financial Services, LLC5$5.47K<0.01%013F-HRTimeline
Burk Holdings LLC5$5.47K<0.01%new13F-HRTimeline
Cornerstone Financial Management LLC5$5.47K0.01%013F-HR/ATimeline
Advocate Investing Services LLC5$5.47K<0.01%013F-HRTimeline
BAYBAN5$5.47K<0.01%013F-HRTimeline
Bravera Wealth5$5.47K<0.01%013F-HRTimeline
Abound Wealth Management5$5.04K<0.01%013F-HRTimeline
JNBA Financial Advisors4$4.37K<0.01%013F-HRTimeline
LANARK FINANCIAL, INC.4$4.37K<0.01%013F-HRTimeline
Vermillion Wealth Management, Inc.4$4.37K<0.01%new13F-HRTimeline
State of Wyoming4$4.37K<0.01%013F-HRTimeline
Raleigh Capital Management Inc.4$4.37K<0.01%new13F-HRTimeline
Bare Financial Services, Inc4$4.37K<0.01%+113F-HRTimeline
HM PAYSON & CO3$3.28K<0.01%013F-HRTimeline
ALBION FINANCIAL GROUP /UT3$3.28K<0.01%013F-HRTimeline
Clayton Financial Group LLC3$3.28K<0.01%013F-HRTimeline
Rialto Wealth Management, LLC3$3.28K<0.01%013F-HRTimeline
CREATIVE FINANCIAL DESIGNS INC /ADV3$3.28K<0.01%013F-HRTimeline
Altshuler Shaham Ltd3$3.28K<0.01%-413F-HRTimeline
RAFFA WEALTH MANAGEMENT, LLC3$3.28K<0.01%013F-HRTimeline
Grove Bank & Trust3$3.28K<0.01%013F-HRTimeline
Bay Harbor Wealth Management, LLC3$3.28K<0.01%013F-HRTimeline
Crews Bank & Trust3$3.28K<0.01%013F-HRTimeline
Whipplewood Advisors, LLC3$3.28K<0.01%new13F-HRTimeline
Mountain Hill Investment Partners Corp.3$3.28K<0.01%013F-HRTimeline
ST GERMAIN D J CO INCin group ST GERMAIN D J CO INC2$2.19K<0.01%-19413F-HRTimelineGroup
NBT BANK, N.A.in group NBT BANK, N.A.2$2.19K<0.01%new13F-HRTimelineGroup
GHP Investment Advisors, Inc.2$2.19K<0.01%new13F-HRTimeline
Princeton Global Asset Management LLC2$2.19K<0.01%013F-HRTimeline
High Note Wealth, LLC2$2.19K<0.01%+113F-HRTimeline
Aspect Partners, LLC2$2.19K<0.01%013F-HRTimeline
Retirement Wealth Solutions LLC2$2.19K<0.01%013F-HRTimeline
1015 Capital Partners, LLC2$2.19K<0.01%+113F-HRTimeline
Colonial Trust Co / SCin group Colonial Trust Advisors2$1.9K<0.01%013F-HRTimelineGroup
PayPay Securities Corp1$1.4K0.05%new13F-HRTimeline
Holos Integrated Wealth LLC1$1.19K<0.01%new13F-HRTimeline
IMA Advisory Services, Inc.1$1.09K<0.01%013F-HRTimeline
Triumph Capital Management1$1.09K<0.01%new13F-HRTimeline
Quaker Wealth Management, LLC1$1.09K<0.01%013F-HRTimeline
TFC Financial Management, Inc.1$1.09K<0.01%013F-HRTimeline
DecisionPoint Financial, LLC1$1.09K<0.01%013F-HRTimeline
Cassaday & Co Wealth Management LLC1$1.09K<0.01%new13F-HRTimeline
Breakwater Investment Management1$1.09K<0.01%013F-HRTimeline
Seneschal Advisors, LLC1$1.09K<0.01%013F-HRTimeline
WestEnd Advisors, LLC1$1.09K<0.01%013F-HRTimeline
TD Capital Management LLC1$1.09K<0.01%new13F-HRTimeline
Trust Co1$1.09K<0.01%013F-HRTimeline
Stone House Investment Management, LLC1$1.09K<0.01%new13F-HRTimeline
Lloyd Advisory Services, LLC.1$1.09K<0.01%-2413F-HRTimeline
Davis Capital Management1$1.09K<0.01%013F-HRTimeline
Washington Trust Advisors, Inc.1$1.09K<0.01%new13F-HRTimeline
Kingdom Financial Group LLC.1$1.09K<0.01%-1513F-HRTimeline
Wealth Enhancement Trust Services, Inc.1$1.09K<0.01%013F-HRTimeline
OGOREK ANTHONY JOSEPH /NY/ /ADV1$1K<0.01%013F-HR/ATimeline
Navigoe, LLC1$1K<0.01%013F-HRTimeline
PEAK6 LLCin group PEAK6 LLC1$796<0.01%-213F-HRTimelineGroup
Beaird Harris Wealth Management, LLC1$678<0.01%013F-HRTimeline
Quest 10 Wealth Builders, Inc.0$514<0.01%-713F-HRTimelineAmount filed as zero, left out of ratios.
Strategic Wealth Partners, Ltd.0$440<0.01%new13F-HRTimelineAmount filed as zero, left out of ratios.
WBI INVESTMENTS, LLCgroup of 2 filers holding0newTimeline