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
Pembroke Management, LTD	50,469	$17.8M	1.48%	–	–
Parnassus Investments	50,262	$17.8M	0.04%	–	–
D. E. Shaw & Co., Inc.	50,113	$17.7M	0.02%	–	–
RMB Capital Management, LLC	47,229	$16.7M	0.62%	–	–
Whittier Trust Co	47,126	$16.6M	0.32%	–	–
Teacher Retirement System of Texas	46,705	$16.5M	0.09%	–	–
HSBC Holdings PLC	46,795	$16.4M	0.02%	–	–
Gilder Gagnon Howe & Co LLC	43,990	$15.5M	0.08%	–	–
Mitsubishi UFJ Trust & Banking Corp	41,909	$14.8M	0.03%	–	–
New York State Teachers Retirement System	39,309	$13.9M	0.03%	–	–
Acadian Asset Management LLC	38,599	$13.6M	0.05%	–	–
Adage Capital Partners GP, L.L.C.	37,800	$13.4M	0.03%	–	–
Thornburg Investment Management Inc	37,716	$13.3M	0.15%	–	–
Frontier Capital Management Co LLC	35,705	$12.6M	0.10%	–	–
State of Wisconsin Investment Board	35,633	$12.6M	0.03%	–	–
Squarepoint Ops LLC	34,026	$12.0M	0.11%	–	–
Federated Hermes, Inc.	33,952	$12.0M	0.02%	–	–
Great West Life Assurance Co	33,760	$11.9M	0.03%	–	–
Arcadia Investment Management Corp	32,489	$11.5M	2.30%	–	–
Schroder Investment Management Group	31,483	$11.1M	0.01%	–	–
Arrowstreet Capital, Limited Partnership	31,189	$11.0M	0.01%	–	–
Hantz Financial Services, Inc.	29,893	$10.6M	0.44%	–	–
Chevy Chase Trust Holdings, Inc.	28,781	$10.2M	0.04%	–	–
Pictet Asset Management Ltd	28,400	$10.0M	0.01%	–	–
Bank of Montreal	25,502	$9.65M	0.01%	–	–
Korea Investment CORP	27,200	$9.61M	0.03%	–	–
Connor, Clark & Lunn Investment Management Ltd.	26,995	$9.54M	0.05%	–	–
State of New Jersey Common Pension Fund D	25,689	$9.07M	0.03%	–	–
Toronto Dominion Bank	25,521	$9.01M	0.02%	–	–
Russell Investments Group, Ltd.	25,350	$8.92M	0.02%	–	–
Eaton Vance Management	24,918	$8.80M	0.01%	–	–
Snowden Capital Advisors LLC	24,149	$8.53M	0.49%	–	–
US Bancorp	23,334	$8.24M	0.02%	–	–
Aviva PLC	22,523	$7.96M	0.04%	–	–
Summit Creek Advisors LLC	22,395	$7.91M	0.94%	–	–
Ergoteles LLC	22,182	$7.83M	0.24%	–	–
Susquehanna International Group, LLP	22,070	$7.79M	0.01%	–	–
Cubist Systematic Strategies, LLC	21,870	$7.72M	0.10%	–	–
Westpac Banking Corp	21,744	$7.68M	0.08%	–	–
EULAV Asset Management	21,565	$7.62M	0.20%	–	–
LPL Financial LLC	21,497	$7.59M	0.01%	–	–
Navellier & Associates Inc	21,488	$7.59M	1.36%	–	–
Oregon Public Employees Retirement Fund	20,812	$7.35M	0.09%	–	–
Sit Investment Associates Inc	20,210	$7.14M	0.19%	–	–
Whittier Trust Co of Nevada Inc	19,672	$6.95M	0.31%	–	–
Amundi Asset Management US, Inc.	19,275	$6.81M	0.01%	–	–
Asset Management One Co.,Ltd.	19,242	$6.80M	0.03%	–	–
MUFG Securities EMEA plc	19,000	$6.71M	0.06%	–	–
Next Century Growth Investors LLC	17,876	$6.31M	0.48%	–	–
Advisor Group Holdings, Inc.	17,574	$6.23M	0.01%	–	–
American Century Companies Inc	17,611	$6.22M	0.00%	–	–
Point72 Hong Kong Ltd	17,110	$6.04M	0.49%	–	–
Raymond James Financial Services Advisors, Inc.	16,402	$5.79M	0.01%	–	–
Taylor Frigon Capital Management LLC	16,244	$5.74M	1.77%	–	–
Stifel Financial Corp	16,178	$5.71M	0.01%	–	–
Treasurer of the State of North Carolina	16,159	$5.71M	0.04%	–	–
Retirement Systems of Alabama	15,996	$5.65M	0.02%	–	–
Westwood Holdings Group Inc.	15,895	$5.61M	0.06%	–	–
Cinctive Capital Management LP	15,891	$5.61M	0.36%	–	–
Oppenheimer Asset Management Inc.	15,779	$5.57M	0.09%	–	–
Commerce Bank	15,742	$5.56M	0.04%	–	–
Comerica Bank	14,321	$5.45M	0.03%	–	–
Zevenbergen Capital Investments LLC	15,215	$5.37M	0.10%	–	–
Royal London Asset Management Ltd	14,921	$5.27M	0.02%	–	–
Standard Life Aberdeen plc	14,869	$5.25M	0.01%	–	–
Advisors Asset Management, Inc.	14,865	$5.25M	0.08%	–	–
Crossmark Global Holdings, Inc.	14,389	$5.08M	0.13%	–	–
Synovus Financial Corp	14,196	$5.02M	0.06%	–	–
American International Group, Inc.	14,118	$4.99M	0.02%	–	–
Capital Fund Management S.A.	13,868	$4.90M	0.17%	–	–
AMP Capital Investors Ltd	13,789	$4.86M	0.02%	–	–
State of Tennessee, Treasury Department	13,708	$4.84M	0.02%	–	–
Mitsubishi UFJ Kokusai Asset Management Co., Ltd.	13,670	$4.83M	0.03%	–	–
Vontobel Holding Ltd.	13,522	$4.78M	0.04%	–	–
ClariVest Asset Management LLC	12,950	$4.58M	0.16%	–	–
Zurcher Kantonalbank (Zurich Cantonalbank)	12,803	$4.52M	0.03%	–	–
Natixis Advisors, L.P.	12,538	$4.43M	0.02%	–	–
Guggenheim Capital LLC	12,529	$4.42M	0.03%	–	–
Arizona State Retirement System	12,352	$4.36M	0.04%	–	–
Covenant Asset Management, LLC	12,071	$4.26M	1.44%	–	–
AlphaStar Capital Management, LLC	12,009	$4.25M	0.66%	–	–
ProShare Advisors LLC	11,440	$4.04M	0.01%	–	–
Fjarde Ap-Fonden /Fourth Swedish National Pension Fund	11,400	$4.03M	0.04%	–	–
Level Four Advisory Services, LLC	11,264	$3.98M	0.31%	–	–
Two Sigma Investments, LP	10,996	$3.88M	0.01%	–	–
State of Michigan Retirement System	10,800	$3.81M	0.02%	–	–
Man Group plc	10,739	$3.79M	0.02%	–	–
Blair William & Co	10,572	$3.73M	0.01%	–	–
Nisa Investment Advisors, LLC	10,530	$3.72M	0.02%	–	–
Intrinsic Edge Capital Management LLC	10,521	$3.72M	0.26%	–	–
Boothbay Fund Management, LLC	10,336	$3.65M	0.19%	–	–
MetLife Investment Management	10,219	$3.61M	0.03%	–	–
Robeco Institutional Asset Management B.V.	10,108	$3.57M	0.01%	–	–
Bahl & Gaynor Inc	10,066	$3.56M	0.02%	–	–
American Capital Management Inc	9,998	$3.53M	0.11%	–	–
Truist Financial Corp	9,823	$3.47M	0.01%	–	–
Triasima Portfolio Management inc.	9,660	$3.41M	0.17%	–	–
Gulf International Bank (UK) Ltd	9,615	$3.40M	0.05%	–	–
PEAK6 Investments LLC	9,575	$3.38M	0.09%	–	–
Chartwell Investment Partners, LLC	9,480	$3.35M	0.10%	–	–