Monolithic Power Systems, Inc.

MPWR

Exchange: Nasdaq
Industry: Semiconductors & Related Devices
SEC CIK: 0001280452

SEC filings (opens in a new tab)

In the last 90 days, Monolithic Power Systems, Inc. insiders filed 0 open-market purchases and 8 sales; 1,250 institutions reported holding it in 13F filings for Q2 2026, worth $65.6B in total; superinvestors D1 Capital Partners and Maverick Capital hold it.

13F holders, Q1 2021

Institutional positions in Monolithic Power Systems, Inc. as of Mar 31, 2021. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders: 530; No complete 13F data for Q4 2020
Shares held: 42.7M; No complete 13F data for Q4 2020
Total value: $15.1B; No complete 13F data for Q4 2020

Holders and value by quarter

Institutions reporting MPWR on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ1 2021: 530 institutions

Value heldQ1 2021: $15.1B

Institutions holding MPWR and their total value by quarter
Quarter	Holders	Value
Q2 2026	1,250	$65.6B
Q1 2026	1,124	$51.6B
Q4 2025	1,061	$44.2B
Q3 2025	981	$43.0B
Q2 2025	907	$34.6B
Q1 2025	862	$27.0B
Q4 2024	864	$27.6B
Q3 2024	885	$42.8B
Q2 2024	838	$38.6B
Q1 2024	807	$31.2B
Q4 2023	737	$28.6B
Q3 2023	655	$21.2B
Q2 2023	652	$25.2B
Q1 2023	669	$23.3B
Q4 2022	611	$16.5B
Q3 2022	630	$16.6B
Q2 2022	625	$16.8B
Q1 2022	611	$21.3B
Q4 2021	627	$21.5B
Q3 2021	579	$21.1B
Q2 2021	533	$16.1B
Q1 2021	530	$15.1B

Institutions, Q1 2021

Shares, value and share of portfolio for each institution holding Monolithic Power Systems, Inc..

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.

Institutions holding MPWR in Q1 2021
Institution	Shares	Value	% of portfolio	Change in shares	Action
BlackRock Inc.	5,555,671	$1.96B	0.06%	–	–
Vanguard Group Inc	4,824,710	$1.70B	0.05%	–	–
State Street Corp	1,685,861	$596.5M	0.03%	–	–
Invesco Ltd.	1,628,618	$575.2M	0.15%	–	–
Franklin Resources Inc	1,566,671	$553.4M	0.23%	–	–
Massachusetts Financial Services Co	1,248,472	$441.0M	0.14%	–	–
Wasatch Advisors Inc	1,054,209	$372.4M	1.67%	–	–
Price T Rowe Associates Inc	911,552	$322.0M	0.03%	–	–
Waddell & Reed Financial Inc	905,440	$319.8M	0.66%	–	–
Brown Advisory Inc	893,036	$315.4M	0.54%	–	–
Geode Capital Management, LLC	805,028	$283.7M	0.04%	–	–
Fred Alger Management, LLC	796,339	$281.3M	0.74%	–	–
Wells Fargo & Company	742,746	$262.3M	0.06%	–	–
Clearbridge Investments, LLC	706,352	$249.5M	0.19%	–	–
Alliancebernstein L.P.	653,404	$230.8M	0.10%	–	–
Neuberger Berman Group LLC	650,004	$229.6M	0.22%	–	–
Voya Investment Management LLC	551,392	$194.8M	0.39%	–	–
Earnest Partners LLC	534,977	$189.0M	1.13%	–	–
Bank of America Corp	519,012	$183.3M	0.02%	–	–
JPMorgan Chase & Co	511,776	$180.8M	0.03%	–	–
Impax Asset Management Group plc	470,211	$165.3M	0.85%	–	–
Artisan Partners Limited Partnership	463,003	$163.5M	0.21%	–	–
Nuveen Asset Management, LLC	446,800	$157.8M	0.05%	–	–
Northern Trust Corp	443,250	$156.6M	0.03%	–	–
Congress Asset Management Co	413,589	$146.1M	1.32%	–	–
Norges Bank	395,433	$139.7M	0.03%	–	–
FMR LLC	368,670	$130.2M	0.01%	–	–
Bank of New York Mellon Corp	358,990	$126.8M	0.03%	–	–
Baird Financial Group, Inc.	311,655	$110.1M	0.31%	–	–
Lord, Abbett & Co. LLC	301,336	$106.4M	0.27%	–	–
Charles Schwab Investment Management Inc	300,372	$106.1M	0.04%	–	–
Wellington Management Group LLP	297,747	$105.2M	0.02%	–	–
Robeco Schweiz AG	291,539	$103.0M	1.57%	–	–
CIBC Private Wealth Group, LLC	279,088	$98.6M	0.25%	–	–
Legal & General Group Plc	272,918	$96.4M	0.04%	–	–
Macquarie Group Ltd	251,180	$88.7M	0.13%	–	–
TimesSquare Capital Management, LLC	225,300	$79.6M	0.68%	–	–
Polar Capital Holdings Plc	212,958	$75.2M	0.47%	–	–
Ensign Peak Advisors, Inc	209,436	$74.0M	0.16%	–	–
New York State Common Retirement Fund	207,356	$73.2M	0.08%	–	–
Geneva Capital Management LLC	205,266	$72.5M	1.24%	–	–
Goldman Sachs Group Inc	203,367	$71.8M	0.02%	–	–
UBS Asset Management Americas Inc	187,391	$66.2M	0.03%	–	–
Thrivent Financial for Lutherans	179,151	$63.3M	0.14%	–	–
Cavalry Management Group, LLC	176,851	$62.5M	5.99%	–	–
Victory Capital Management Inc	173,549	$61.3M	0.06%	–	–
Swiss National Bank	164,800	$58.2M	0.04%	–	–
Dimensional Fund Advisors LP	159,775	$56.4M	0.02%	–	–
Millennium Management LLC	156,691	$55.3M	0.08%	–	–
Eagle Asset Management Inc	148,532	$54.6M	0.24%	–	–
TD Asset Management Inc	150,131	$53.0M	0.06%	–	–
Ardevora Asset Management LLP	148,797	$52.6M	0.78%	–	–
Sumitomo Mitsui Trust Holdings, Inc.	148,676	$52.5M	0.03%	–	–
STRS Ohio	146,640	$51.8M	0.19%	–	–
Martingale Asset Management L P	143,748	$50.8M	0.58%	–	–
First Trust Advisors LP	138,620	$49.0M	0.06%	–	–
Royal Bank of Canada	132,396	$46.8M	0.01%	–	–
Citigroup Inc	129,999	$45.9M	0.04%	–	–
Creative Planning	129,164	$45.6M	0.09%	–	–
Rafferty Asset Management, LLC	127,657	$45.1M	0.32%	–	–
DekaBank Deutsche Girozentrale	130,906	$44.3M	0.15%	–	–
UBS Group AG	125,236	$44.2M	0.02%	–	–
AQR Capital Management LLC	121,292	$42.8M	0.07%	–	–
Principal Financial Group Inc	120,996	$42.7M	0.03%	–	–
Parametric Portfolio Associates LLC	119,572	$42.2M	0.02%	–	–
Epoch Investment Partners, Inc.	114,576	$40.5M	0.19%	–	–
Loomis Sayles & Co L P	113,925	$40.2M	0.05%	–	–
Deutsche Bank AG	112,001	$39.6M	0.02%	–	–
Barclays PLC	111,756	$39.5M	0.04%	–	–
Grandeur Peak Global Advisors, LLC	104,647	$37.0M	2.01%	–	–
California Public Employees Retirement System	103,725	$36.6M	0.03%	–	–
Jennison Associates LLC	102,606	$36.2M	0.03%	–	–
Envestnet Asset Management Inc	101,674	$35.9M	0.02%	–	–
BNP Paribas Arbitrage, SA	100,204	$35.4M	0.08%	–	–
Manufacturers Life Insurance Company, The	96,413	$34.1M	0.03%	–	–
Ameriprise Financial Inc	90,597	$32.0M	0.01%	–	–
Segall Bryant & Hamill, LLC	89,800	$31.7M	0.31%	–	–
Scout Investments, Inc.	86,636	$30.6M	0.46%	–	–
Rhumbline Advisers	86,331	$30.5M	0.04%	–	–
AXA S.A.	85,633	$30.2M	0.09%	–	–
California State Teachers Retirement System	81,657	$28.8M	0.04%	–	–
Worldquant Millennium Advisors LLC	76,677	$27.1M	0.58%	–	–
Morgan Stanley	75,969	$26.8M	0.00%	–	–
Eventide Asset Management, LLC	74,159	$26.2M	0.39%	–	–
National Pension Service	72,924	$25.8M	0.05%	–	–
Glenmede Trust Co NA	72,798	$25.7M	0.14%	–	–
Credit Suisse AG	72,769	$25.7M	0.02%	–	–
Jag Capital Management, LLC	68,716	$24.3M	2.14%	–	–
Prudential Financial Inc	65,141	$23.0M	0.03%	–	–
Osterweis Capital Management Inc	64,220	$22.7M	1.24%	–	–
Los Angeles Capital Management LLC	63,185	$22.3M	0.10%	–	–
Azimuth Capital Management LLC	61,353	$21.7M	1.03%	–	–
Allianz Asset Management GmbH	60,943	$21.5M	0.02%	–	–
Citadel Advisors LLC	60,861	$21.5M	0.02%	–	–
SEI Investments Co	56,784	$20.2M	0.05%	–	–
Nicholas Investment Partners, LP	54,589	$19.3M	1.34%	–	–
State Board of Administration of Florida Retirement System	53,954	$19.1M	0.04%	–	–
Raymond James & Associates	53,721	$19.0M	0.02%	–	–
KBC Group NV	53,269	$18.8M	0.08%	–	–
Public Employees Retirement System of Ohio	50,876	$18.0M	0.07%	–	–