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
Toronto Dominion Bank	25,521	$9.01M	0.02%	–	–
State of New Jersey Common Pension Fund D	25,689	$9.07M	0.03%	–	–
Connor, Clark & Lunn Investment Management Ltd.	26,995	$9.54M	0.05%	–	–
Korea Investment CORP	27,200	$9.61M	0.03%	–	–
Bank of Montreal	25,502	$9.65M	0.01%	–	–
Pictet Asset Management Ltd	28,400	$10.0M	0.01%	–	–
Chevy Chase Trust Holdings, Inc.	28,781	$10.2M	0.04%	–	–
Hantz Financial Services, Inc.	29,893	$10.6M	0.44%	–	–
Arrowstreet Capital, Limited Partnership	31,189	$11.0M	0.01%	–	–
Schroder Investment Management Group	31,483	$11.1M	0.01%	–	–
Arcadia Investment Management Corp	32,489	$11.5M	2.30%	–	–
Great West Life Assurance Co	33,760	$11.9M	0.03%	–	–
Federated Hermes, Inc.	33,952	$12.0M	0.02%	–	–
Squarepoint Ops LLC	34,026	$12.0M	0.11%	–	–
State of Wisconsin Investment Board	35,633	$12.6M	0.03%	–	–
Frontier Capital Management Co LLC	35,705	$12.6M	0.10%	–	–
Thornburg Investment Management Inc	37,716	$13.3M	0.15%	–	–
Adage Capital Partners GP, L.L.C.	37,800	$13.4M	0.03%	–	–
Acadian Asset Management LLC	38,599	$13.6M	0.05%	–	–
New York State Teachers Retirement System	39,309	$13.9M	0.03%	–	–
Mitsubishi UFJ Trust & Banking Corp	41,909	$14.8M	0.03%	–	–
Gilder Gagnon Howe & Co LLC	43,990	$15.5M	0.08%	–	–
HSBC Holdings PLC	46,795	$16.4M	0.02%	–	–
Teacher Retirement System of Texas	46,705	$16.5M	0.09%	–	–
Whittier Trust Co	47,126	$16.6M	0.32%	–	–
RMB Capital Management, LLC	47,229	$16.7M	0.62%	–	–
D. E. Shaw & Co., Inc.	50,113	$17.7M	0.02%	–	–
Parnassus Investments	50,262	$17.8M	0.04%	–	–
Pembroke Management, LTD	50,469	$17.8M	1.48%	–	–
Public Employees Retirement System of Ohio	50,876	$18.0M	0.07%	–	–
KBC Group NV	53,269	$18.8M	0.08%	–	–
Raymond James & Associates	53,721	$19.0M	0.02%	–	–
State Board of Administration of Florida Retirement System	53,954	$19.1M	0.04%	–	–
Nicholas Investment Partners, LP	54,589	$19.3M	1.34%	–	–
SEI Investments Co	56,784	$20.2M	0.05%	–	–
Citadel Advisors LLC	60,861	$21.5M	0.02%	–	–
Allianz Asset Management GmbH	60,943	$21.5M	0.02%	–	–
Azimuth Capital Management LLC	61,353	$21.7M	1.03%	–	–
Los Angeles Capital Management LLC	63,185	$22.3M	0.10%	–	–
Osterweis Capital Management Inc	64,220	$22.7M	1.24%	–	–
Prudential Financial Inc	65,141	$23.0M	0.03%	–	–
Jag Capital Management, LLC	68,716	$24.3M	2.14%	–	–
Credit Suisse AG	72,769	$25.7M	0.02%	–	–
Glenmede Trust Co NA	72,798	$25.7M	0.14%	–	–
National Pension Service	72,924	$25.8M	0.05%	–	–
Eventide Asset Management, LLC	74,159	$26.2M	0.39%	–	–
Morgan Stanley	75,969	$26.8M	0.00%	–	–
Worldquant Millennium Advisors LLC	76,677	$27.1M	0.58%	–	–
California State Teachers Retirement System	81,657	$28.8M	0.04%	–	–
AXA S.A.	85,633	$30.2M	0.09%	–	–
Rhumbline Advisers	86,331	$30.5M	0.04%	–	–
Scout Investments, Inc.	86,636	$30.6M	0.46%	–	–
Segall Bryant & Hamill, LLC	89,800	$31.7M	0.31%	–	–
Ameriprise Financial Inc	90,597	$32.0M	0.01%	–	–
Manufacturers Life Insurance Company, The	96,413	$34.1M	0.03%	–	–
BNP Paribas Arbitrage, SA	100,204	$35.4M	0.08%	–	–
Envestnet Asset Management Inc	101,674	$35.9M	0.02%	–	–
Jennison Associates LLC	102,606	$36.2M	0.03%	–	–
California Public Employees Retirement System	103,725	$36.6M	0.03%	–	–
Grandeur Peak Global Advisors, LLC	104,647	$37.0M	2.01%	–	–
Barclays PLC	111,756	$39.5M	0.04%	–	–
Deutsche Bank AG	112,001	$39.6M	0.02%	–	–
Loomis Sayles & Co L P	113,925	$40.2M	0.05%	–	–
Epoch Investment Partners, Inc.	114,576	$40.5M	0.19%	–	–
Parametric Portfolio Associates LLC	119,572	$42.2M	0.02%	–	–
Principal Financial Group Inc	120,996	$42.7M	0.03%	–	–
AQR Capital Management LLC	121,292	$42.8M	0.07%	–	–
UBS Group AG	125,236	$44.2M	0.02%	–	–
DekaBank Deutsche Girozentrale	130,906	$44.3M	0.15%	–	–
Rafferty Asset Management, LLC	127,657	$45.1M	0.32%	–	–
Creative Planning	129,164	$45.6M	0.09%	–	–
Citigroup Inc	129,999	$45.9M	0.04%	–	–
Royal Bank of Canada	132,396	$46.8M	0.01%	–	–
First Trust Advisors LP	138,620	$49.0M	0.06%	–	–
Martingale Asset Management L P	143,748	$50.8M	0.58%	–	–
STRS Ohio	146,640	$51.8M	0.19%	–	–
Sumitomo Mitsui Trust Holdings, Inc.	148,676	$52.5M	0.03%	–	–
Ardevora Asset Management LLP	148,797	$52.6M	0.78%	–	–
TD Asset Management Inc	150,131	$53.0M	0.06%	–	–
Eagle Asset Management Inc	148,532	$54.6M	0.24%	–	–
Millennium Management LLC	156,691	$55.3M	0.08%	–	–
Dimensional Fund Advisors LP	159,775	$56.4M	0.02%	–	–
Swiss National Bank	164,800	$58.2M	0.04%	–	–
Victory Capital Management Inc	173,549	$61.3M	0.06%	–	–
Cavalry Management Group, LLC	176,851	$62.5M	5.99%	–	–
Thrivent Financial for Lutherans	179,151	$63.3M	0.14%	–	–
UBS Asset Management Americas Inc	187,391	$66.2M	0.03%	–	–
Goldman Sachs Group Inc	203,367	$71.8M	0.02%	–	–
Geneva Capital Management LLC	205,266	$72.5M	1.24%	–	–
New York State Common Retirement Fund	207,356	$73.2M	0.08%	–	–
Ensign Peak Advisors, Inc	209,436	$74.0M	0.16%	–	–
Polar Capital Holdings Plc	212,958	$75.2M	0.47%	–	–
TimesSquare Capital Management, LLC	225,300	$79.6M	0.68%	–	–
Macquarie Group Ltd	251,180	$88.7M	0.13%	–	–
Legal & General Group Plc	272,918	$96.4M	0.04%	–	–
CIBC Private Wealth Group, LLC	279,088	$98.6M	0.25%	–	–
Robeco Schweiz AG	291,539	$103.0M	1.57%	–	–
Wellington Management Group LLP	297,747	$105.2M	0.02%	–	–
Charles Schwab Investment Management Inc	300,372	$106.1M	0.04%	–	–
Lord, Abbett & Co. LLC	301,336	$106.4M	0.27%	–	–