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
Andra AP-fonden	2,200	$777.0K	0.02%	–	–
Rockefeller Capital Management L.P.	2,231	$787.0K	0.01%	–	–
GWM Advisors LLC	2,246	$793.0K	0.02%	–	–
Redhawk Wealth Advisors, Inc.	2,320	$820.0K	0.20%	–	–
Claraphi Advisory Network, LLC	2,351	$831.0K	0.23%	–	–
Illinois Municipal Retirement Fund	2,373	$838.0K	0.04%	–	–
Green Alpha Advisors, LLC	2,376	$839.0K	0.83%	–	–
Nordea Investment Management AB	2,415	$851.0K	0.00%	–	–
ExodusPoint Capital Management, LP	2,419	$854.0K	0.02%	–	–
Pacer Advisors, Inc.	2,457	$868.0K	0.02%	–	–
Great Lakes Advisors, LLC	2,468	$872.0K	0.01%	–	–
Kentucky Retirement Systems	2,477	$875.0K	0.04%	–	–
Steward Partners Investment Advisory, LLC	2,487	$878.5K	0.02%	–	–
Ci Investments Inc.	2,501	$883.0K	0.00%	–	–
Atom Investors LP	2,541	$898.0K	0.17%	–	–
Alps Advisors Inc	2,568	$907.0K	0.01%	–	–
Paloma Partners Management Co	2,578	$910.0K	0.03%	–	–
We Are One Seven, LLC	2,612	$922.0K	0.16%	–	–
New Mexico Educational Retirement Board	2,700	$954.0K	0.04%	–	–
Louisiana State Employees Retirement System	2,700	$954.0K	0.02%	–	–
Mount Yale Investment Advisors, LLC	2,701	$954.0K	0.12%	–	–
Sumitomo Mitsui DS Asset Management Company, Ltd	2,708	$956.0K	0.03%	–	–
FourThought Financial, LLC	2,746	$969.0K	0.14%	–	–
Schonfeld Strategic Advisors LLC	2,756	$973.0K	0.01%	–	–
Wealthfront Advisers LLC	2,760	$975.0K	0.01%	–	–
First Republic Investment Management, Inc.	2,769	$978.0K	0.00%	–	–
ING Groep NV	2,839	$1.00M	0.02%	–	–
Oppenheimer & Co Inc	2,892	$1.02M	0.02%	–	–
Shell Asset Management Co	2,915	$1.03M	0.02%	–	–
Marshall Wace North America L.P.	2,970	$1.05M	0.00%	–	–
Quadrature Capital Ltd	2,984	$1.05M	0.05%	–	–
Yorktown Management & Research Co Inc	3,000	$1.06M	0.88%	–	–
Daiwa Securities Group Inc.	3,001	$1.06M	0.01%	–	–
La Financiere de L'Echiquier	3,000	$1.06M	0.04%	–	–
Engineers Gate Manager LP	3,050	$1.08M	0.05%	–	–
Twinbeech Capital LP	3,050	$1.08M	0.16%	–	–
Central Trust Co	3,062	$1.08M	0.04%	–	–
Van Eck Associates Corp	3,107	$1.10M	0.00%	–	–
Renaissance Group LLC	3,106	$1.10M	0.05%	–	–
Advisor OS, LLC	3,159	$1.11M	0.25%	–	–
Pier 88 Investment Partners LLC	3,171	$1.12M	0.38%	–	–
Polianta Ltd	3,200	$1.13M	0.63%	–	–
Saturna Capital CORP	3,211	$1.13M	0.03%	–	–
Oak Ridge Investments LLC	3,281	$1.16M	0.11%	–	–
Maryland State Retirement & Pension System	3,328	$1.18M	0.04%	–	–
Fort Washington Investment Advisors Inc	3,329	$1.18M	0.01%	–	–
Janney Montgomery Scott LLC	3,480	$1.23M	0.01%	–	–
Norinchukin Bank, The	3,532	$1.25M	0.02%	–	–
Calamos Advisors LLC	3,544	$1.25M	0.01%	–	–
Penserra Capital Management LLC	3,556	$1.25M	0.02%	–	–
CIBC Asset Management Inc	3,718	$1.31M	0.01%	–	–
Captrust Financial Advisors	3,732	$1.32M	0.01%	–	–
Securian Asset Management, Inc	3,750	$1.32M	0.03%	–	–
TD Private Client Wealth LLC	3,760	$1.33M	0.06%	–	–
USS Investment Management Ltd	3,800	$1.34M	0.01%	–	–
Virtue Capital Management, LLC	3,851	$1.36M	0.32%	–	–
Shaker Investments LLC	3,911	$1.38M	0.67%	–	–
Janus Henderson Group PLC	3,934	$1.39M	0.00%	–	–
Jacobs Levy Equity Management, Inc	3,968	$1.40M	0.01%	–	–
Tower Research Capital LLC (TRC)	3,973	$1.40M	0.02%	–	–
MAI Capital Management	4,037	$1.43M	0.03%	–	–
Public Sector Pension Investment Board	4,060	$1.43M	0.01%	–	–
Coldstream Capital Management Inc	4,091	$1.45M	0.08%	–	–
Lisanti Capital Growth, LLC	4,235	$1.50M	0.19%	–	–
Jane Street Group, LLC	4,236	$1.50M	0.00%	–	–
Wolverine Trading, LLC	4,417	$1.51M	0.03%	–	–
Westover Capital Advisors, LLC	4,343	$1.53M	0.53%	–	–
IFM Investors Pty Ltd	4,438	$1.57M	0.04%	–	–
Nissay Asset Management Corp	4,552	$1.61M	0.02%	–	–
Torray LLC	4,591	$1.62M	0.25%	–	–
PFG Advisors	4,602	$1.63M	0.21%	–	–
Campbell Newman Asset Management Inc	4,607	$1.63M	0.17%	–	–
Hartford Investment Management Co	4,657	$1.65M	0.04%	–	–
Teachers Retirement System of the State of Kentucky	4,699	$1.66M	0.02%	–	–
HighTower Advisors, LLC	4,722	$1.66M	0.01%	–	–
Northwestern Mutual Wealth Management Co	4,732	$1.67M	0.00%	–	–
Tributary Capital Management, LLC	4,800	$1.70M	0.13%	–	–
Brinker Capital Investments, LLC	4,844	$1.71M	0.03%	–	–
Fifth Third Bancorp	4,908	$1.73M	0.01%	–	–
Crown Advisors Management, Inc.	5,000	$1.77M	1.38%	–	–
B. Metzler seel. Sohn & Co. Holding AG	5,039	$1.78M	0.03%	–	–
MML Investors Services, LLC	5,122	$1.81M	0.02%	–	–
TownSquare Capital, LLC	5,154	$1.82M	0.07%	–	–
APG Asset Management N.V.	6,195	$1.86M	0.00%	–	–
Commonwealth of Pennsylvania Public School Empls Retrmt Sys	5,363	$1.89M	0.02%	–	–
Winton Group Ltd	5,393	$1.91M	0.11%	–	–
Empowered Funds, LLC	5,325	$1.95M	0.37%	–	–
Mitchell Capital Management Co	5,592	$1.98M	0.48%	–	–
Intrust Bank NA	5,601	$1.98M	0.28%	–	–
O'Shares Investment Advisers, LLC	5,660	$2.00M	0.15%	–	–
AdvisorShares Investments LLC	5,721	$2.02M	0.25%	–	–
Keybank National Association	5,916	$2.09M	0.01%	–	–
Foundry Partners, LLC	5,941	$2.10M	0.07%	–	–
Fulcrum Equity Management	6,065	$2.14M	0.85%	–	–
Fortis Capital Management LLC	6,100	$2.15M	1.24%	–	–
SG Americas Securities, LLC	6,106	$2.16M	0.01%	–	–
Public Employees Retirement Association of Colorado	6,223	$2.20M	0.01%	–	–
Xponance, Inc.	6,473	$2.29M	0.05%	–	–
First Citizens Bank & Trust Co	6,508	$2.30M	0.11%	–	–
GAM Holding AG	6,774	$2.32M	0.11%	–	–