Monolithic Power Systems, Inc. (MPWR) Institutional Ownership & Insider Trading

1,238 institutions reported holding Monolithic Power Systems, Inc. shares in 13F filings for the quarter ended 2026-06-30, according to EquiReason's reading of their SEC filings. 330 insider trades on Form 4 since 2025-10-01.

Source: SEC EDGAR filings · figures as of 2026-06-30 · read by EquiReason

MPWRMonolithic Power Systems, Inc.Follow MPWR — free

Semiconductors · Technology

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Market cap: 56.0B
P/E TTM: 69.6
Dividend yield: 0.6%
52-week: —
Next earnings: 29 Oct, in 5 days

Institutions · all 13F filers

quarter to 30 Jun 2026 · filers in both quarters

1,238 institutions held 96.9% of the shares. Across filers that reported both quarters, shares held changed -0.8%.

Largest moves, shares (millions)

Institutional flow by quarter

net shares added or trimmed, millions · filers in both quarters

Quarter	Holders	Shares held, M	Change	Increased	New	Decreased	Closed
Jun 26	1,238	48	-0.8%	368	175	413	63
Mar 26	1,107	46	-4.0%	351	137	371	72
Dec 25	1,036	48	-0.7%	334	102	315	69
Sep 25	951	47	+1.1%	299	119	283	51
Jun 25	887	47	+1.0%	333	99	267	60
Mar 25	834	46	+1.0%	296	88	284	80
Dec 24	834	47	-1.7%	297	73	261	136
Sep 24	856	46	-3.0%	287	87	277	48

Monolithic Power Systems, Inc. — questions

Who owns Monolithic Power Systems, Inc. stock?: 1,238 institutions reported Monolithic Power Systems, Inc. shares in 13F filings for the quarter ended 2026-06-30. The largest: BlackRock, Inc. (11.4%), FMR LLC (10.5%), VANGUARD CAPITAL MANAGEMENT LLC (6.4%).
Are Monolithic Power Systems, Inc. insiders buying or selling?: 330 insider trades on Form 4 since 2025-10-01; the full list, with dates, people and plan status, is on this page.

Every figure on this page comes from Monolithic Power Systems, Inc.'s own SEC filings — see them on SEC EDGAR. Price data is licensed and shown only inside the product.

How these figures are read: methodology · EquiReason.

Important information. Figures on this page are taken from filings submitted to the U.S. Securities and Exchange Commission (SEC) and processed automatically by EquiReason. They may contain errors, omissions or delays, and EquiReason makes no representation or warranty as to their accuracy, completeness or timeliness. Always verify figures against the original filing on SEC EDGAR before relying on them.

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