Monolithic Power Systems, Inc.
MPWR- Exchange
- Nasdaq
- Industry
- Semiconductors & Related Devices
- SEC CIK
- 0001280452
In the last 90 days, Monolithic Power Systems, Inc. insiders filed 0 open-market purchases and 9 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, Q4 2025
Institutional positions in Monolithic Power Systems, Inc. as of Dec 31, 2025. 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
- 1,061
- +98 vs. Q3 2025
- Shares held
- 48.8M
- +2.18M (+4.7%) vs. Q3 2025
- Total value
- $44.2B
- +$1.40B (+3.3%) vs. Q3 2025
- New holders
- 190
- 383 more added
- Sold out
- 92
- 353 more reduced
18 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: new holders, sold out and not filed yet
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.
| 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, Q4 2025
Shares, value and share of portfolio for each institution holding Monolithic Power Systems, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| National Bank of Canada | 125,474 | $113.7M | 0.12% | +101,300+419.0% | Added |
| DF Dent & Co Inc | 127,277 | $115.4M | 1.66% | −22,453−15.0% | Reduced |
| Natixis Advisors, L.P. | 128,155 | $116.2M | 0.16% | −3,104−2.4% | Reduced |
| Amundi | 129,471 | $117.4M | 0.03% | −8,164−5.9% | Reduced |
| Swiss National Bank | 131,260 | $119.0M | 0.07% | −6,840−5.0% | Reduced |
| Ameriprise Financial Inc | 133,637 | $121.1M | 0.03% | −26,567−16.6% | Reduced |
| Alliancebernstein L.P. | 134,631 | $122.0M | 0.04% | −146,072−52.0% | Reduced |
| Caisse de Depot Et Placement du Quebec | 137,217 | $124.4M | 0.21% | +70,463+105.6% | Added |
| TimesSquare Capital Management, LLC | 140,279 | $127.1M | 1.92% | −732−0.5% | Reduced |
| Allianz Asset Management GmbH | 145,633 | $132.0M | 0.15% | +65,356+81.4% | Added |
| Dimensional Fund Advisors LP | 151,038 | $136.9M | 0.03% | −5,539−3.5% | Reduced |
| Pictet Asset Management Holding SA | 153,003 | $138.7M | 0.13% | −4,788−3.0% | Reduced |
| Artisan Partners Limited Partnership | 153,862 | $139.5M | 0.21% | −38,887−20.2% | Reduced |
| DekaBank Deutsche Girozentrale | 190,443 | $141.8M | 0.27% | 00.0% | Unchanged |
| Earnest Partners LLC | 156,643 | $142.0M | 0.61% | −49,136−23.9% | Reduced |
| Allspring Global Investments Holdings, LLC | 153,328 | $143.6M | 0.23% | −17,893−10.5% | Reduced |
| Nuveen, LLC | 161,249 | $146.1M | 0.04% | +27,103+20.2% | Added |
| Nomura Asset Management International Inc. | 165,234 | $149.8M | 0.23% | +165,234 | New |
| SEI Investments Co | 166,693 | $151.1M | 0.15% | −32,993−16.5% | Reduced |
| Principal Financial Group Inc | 167,265 | $151.6M | 0.08% | −2,447−1.4% | Reduced |
| Deutsche Bank AG | 174,325 | $158.0M | 0.05% | +571+0.3% | Added |
| Royal Bank of Canada | 176,580 | $160.0M | 0.03% | −30,037−14.5% | Reduced |
| Neuberger Berman Group LLC | 181,706 | $164.7M | 0.12% | +13,900+8.3% | Added |
| HSBC Holdings PLC | 200,626 | $182.3M | 0.10% | +62,714+45.5% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 202,864 | $183.9M | 0.31% | +85,968+73.5% | Added |
| American Century Companies Inc | 203,564 | $184.5M | 0.09% | −11,386−5.3% | Reduced |
| Raymond James Financial Inc | 211,484 | $193.7M | 0.06% | −55,728−20.9% | Reduced |
| Citigroup Inc | 245,479 | $222.5M | 0.15% | +67,296+37.8% | Added |
| BNP Paribas Arbitrage, SA | 247,127 | $224.0M | 0.14% | +78,131+46.2% | Added |
| Vaughan Nelson Investment Management, L.P. | 257,644 | $233.5M | 2.28% | −14,885−5.5% | Reduced |
| SG Americas Securities, LLC | 262,231 | $237.7M | 0.31% | +261,893+77,483.1% | Added |
| Kayne Anderson Rudnick Investment Management LLC | 294,043 | $266.5M | 0.72% | −61,320−17.3% | Reduced |
| Bank of New York Mellon Corp | 295,119 | $267.5M | 0.05% | −8,972−3.0% | Reduced |
| FIL Ltd | 316,089 | $286.5M | 0.21% | −181,244−36.4% | Reduced |
| UBS Asset Management Americas Inc | 318,797 | $288.9M | 0.06% | +2,875+0.9% | Added |
| Voya Investment Management LLC | 339,732 | $307.9M | 0.30% | −19,580−5.4% | Reduced |
| Legal & General Group Plc | 356,639 | $323.2M | 0.07% | −1,790−0.5% | Reduced |
| Charles Schwab Investment Management Inc | 365,384 | $331.2M | 0.05% | +7,474+2.1% | Added |
| Wellington Management Group LLP | 384,770 | $348.7M | 0.06% | −68,168−15.1% | Reduced |
| Rafferty Asset Management, LLC | 396,464 | $359.3M | 1.24% | +17,146+4.5% | Added |
| UBS Group AG | 438,985 | $397.9M | 0.08% | −89,334−16.9% | Reduced |
| Northern Trust Corp | 483,700 | $438.4M | 0.06% | −2,131−0.4% | Reduced |
| Brown Advisory Inc | 500,755 | $453.9M | 0.63% | −229,364−31.4% | Reduced |
| Van Eck Associates Corp | 502,312 | $455.3M | 0.38% | −230,136−31.4% | Reduced |
| JPMorgan Chase & Co | 512,273 | $464.3M | 0.03% | −350,955−40.7% | Reduced |
| Bank of America Corp | 549,575 | $498.1M | 0.04% | −173,241−24.0% | Reduced |
| Massachusetts Financial Services Co | 570,719 | $517.3M | 0.17% | +14,132+2.5% | Added |
| Goldman Sachs Group Inc | 593,742 | $538.1M | 0.08% | +159,417+36.7% | Added |
| Barclays PLC | 604,802 | $548.2M | 0.22% | +242,740+67.0% | Added |
| Morgan Stanley | 649,070 | $588.3M | 0.04% | +90,399+16.2% | Added |
| First Trust Advisors LP | 701,454 | $635.8M | 0.46% | +253,653+56.6% | Added |
| T. Rowe Price Investment Management, Inc. | 724,494 | $656.7M | 0.41% | −26,194−3.5% | Reduced |
| Norges Bank | 726,705 | $658.7M | 0.07% | +726,705 | New |
| Franklin Resources Inc | 1,049,409 | $951.1M | 0.23% | −2,644−0.3% | Reduced |
| Geode Capital Management, LLC | 1,382,280 | $1.25B | 0.08% | +44,583+3.3% | Added |
| Price T Rowe Associates Inc | 1,691,394 | $1.53B | 0.17% | +117,596+7.5% | Added |
| State Street Corp | 2,180,419 | $1.98B | 0.07% | +45,715+2.1% | Added |
| Invesco Ltd. | 2,510,980 | $2.28B | 0.21% | +1,371,847+120.4% | Added |
| FMR LLC | 3,977,008 | $3.60B | 0.18% | +412,212+11.6% | Added |
| BlackRock, Inc. | 5,962,391 | $5.40B | 0.09% | +235,617+4.1% | Added |
| Vanguard Group Inc | 6,034,394 | $5.47B | 0.08% | −39,639−0.7% | Reduced |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −132,145−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −65,877−100.0% | Sold out |
| Holocene Advisors, LP | 0 | $0 | 0.00% | −51,171−100.0% | Sold out |
| Achmea Investment Management B.V. | 0 | $0 | 0.00% | −12,808−100.0% | Sold out |
| IFM Investors Pty Ltd | 0 | $0 | 0.00% | −9,175−100.0% | Sold out |
| Renaissance Technologies LLC | 0 | $0 | 0.00% | −8,086−100.0% | Sold out |
| Empowered Funds, LLC | 0 | $0 | 0.00% | −7,936−100.0% | Sold out |
| Concentric Capital Strategies, LP | 0 | $0 | 0.00% | −5,559−100.0% | Sold out |
| Quantessence Capital LLC | 0 | $0 | 0.00% | −4,344−100.0% | Sold out |
| Rational Advisors LLC | 0 | $0 | 0.00% | −3,900−100.0% | Sold out |
| Motley Fool Asset Management LLC | 0 | $0 | 0.00% | −3,757−100.0% | Sold out |
| Hudson Bay Capital Management LP | 0 | $0 | 0.00% | −3,338−100.0% | Sold out |
| Catalyst Funds Management Pty Ltd | 0 | $0 | 0.00% | −3,175−100.0% | Sold out |
| Intech Investment Management LLC | 0 | $0 | 0.00% | −2,336−100.0% | Sold out |
| Boston Partners | 0 | $0 | 0.00% | −2,251−100.0% | Sold out |
| Ossiam | 0 | $0 | 0.00% | −2,250−100.0% | Sold out |
| Perpetual Ltd | 0 | $0 | 0.00% | −1,967−100.0% | Sold out |
| Integrated Wealth Concepts LLC | 0 | $0 | 0.00% | −1,905−100.0% | Sold out |
| Kovitz Investment Group Partners, LLC | 0 | $0 | 0.00% | −1,636−100.0% | Sold out |
| APG Asset Management US Inc. | 0 | $0 | 0.00% | −1,473−100.0% | Sold out |
| Novem Group | 0 | $0 | 0.00% | −1,357−100.0% | Sold out |
| Walleye Trading LLC | 0 | $0 | 0.00% | −1,271−100.0% | Sold out |
| Catalytic Wealth RIA, LLC | 0 | $0 | 0.00% | −1,223−100.0% | Sold out |
| Win Advisors, Inc | 0 | $0 | 0.00% | −1,144−100.0% | Sold out |
| Bayesian Capital Management, LP | 0 | $0 | 0.00% | −1,100−100.0% | Sold out |
| K.J. Harrison & Partners Inc | 0 | $0 | 0.00% | −1,000−100.0% | Sold out |
| CTC Alternative Strategies, Ltd. | 0 | $0 | 0.00% | −974−100.0% | Sold out |
| TownSquare Capital, LLC | 0 | $0 | 0.00% | −938−100.0% | Sold out |
| Cidel Asset Management Inc | 0 | $0 | 0.00% | −935−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −895−100.0% | Sold out |
| NorthRock Partners, LLC | 0 | $0 | 0.00% | −882−100.0% | Sold out |
| Burns Matteson Capital Management, LLC | 0 | $0 | 0.00% | −722−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −710−100.0% | Sold out |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −700−100.0% | Sold out |
| SummitTX Capital, L.P. | 0 | $0 | 0.00% | −700−100.0% | Sold out |
| Summit Wealth Group LLC | 0 | $0 | 0.00% | −1,366−100.0% | Sold out |
| Voleon Capital Management LP | 0 | $0 | 0.00% | −682−100.0% | Sold out |
| Pitcairn Co | 0 | $0 | 0.00% | −670−100.0% | Sold out |
| Cynosure Management, LLC | 0 | $0 | 0.00% | −664−100.0% | Sold out |