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 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, Q3 2025
Institutional positions in Monolithic Power Systems, Inc. as of Sep 30, 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
- 981
- +89 vs. Q2 2025
- Shares held
- 46.8M
- +118.5K (+0.3%) vs. Q2 2025
- Total value
- $43.0B
- +$8.79B (+25.7%) vs. Q2 2025
- New holders
- 164
- 361 more added
- Sold out
- 75
- 317 more reduced
15 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Monolithic Power Systems, Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Vanguard Group Inc | 6,074,033 | $5.59B | 0.08% | +134,087+2.3% | Added |
| BlackRock, Inc. | 5,726,774 | $5.27B | 0.09% | +497,553+9.5% | Added |
| FMR LLC | 3,564,796 | $3.28B | 0.17% | +172,092+5.1% | Added |
| State Street Corp | 2,134,704 | $1.97B | 0.07% | +14,670+0.7% | Added |
| Price T Rowe Associates Inc | 1,573,798 | $1.45B | 0.16% | −515,006−24.7% | Reduced |
| Geode Capital Management, LLC | 1,337,697 | $1.23B | 0.08% | +19,156+1.5% | Added |
| Invesco Ltd. | 1,139,133 | $1.05B | 0.17% | −26,926−2.3% | Reduced |
| Franklin Resources Inc | 1,052,053 | $968.6M | 0.24% | −36,244−3.3% | Reduced |
| JPMorgan Chase & Co | 863,228 | $794.7M | 0.05% | +6,503+0.8% | Added |
| T. Rowe Price Investment Management, Inc. | 750,688 | $691.1M | 0.42% | −177,118−19.1% | Reduced |
| Van Eck Associates Corp | 732,448 | $674.3M | 0.63% | −219,612−23.1% | Reduced |
| Brown Advisory Inc | 730,119 | $672.2M | 0.88% | −134,190−15.5% | Reduced |
| Bank of America Corp | 722,816 | $665.5M | 0.05% | +30,069+4.3% | Added |
| Morgan Stanley | 558,671 | $514.3M | 0.03% | −6,348−1.1% | Reduced |
| Massachusetts Financial Services Co | 556,587 | $512.4M | 0.16% | +71,199+14.7% | Added |
| UBS Group AG | 528,319 | $486.4M | 0.10% | +25,783+5.1% | Added |
| FIL Ltd | 497,333 | $457.9M | 0.36% | −25,740−4.9% | Reduced |
| Northern Trust Corp | 485,831 | $447.3M | 0.06% | +3,774+0.8% | Added |
| Wellington Management Group LLP | 452,938 | $417.0M | 0.07% | −250,213−35.6% | Reduced |
| First Trust Advisors LP | 447,801 | $412.3M | 0.31% | +178,622+66.4% | Added |
| Goldman Sachs Group Inc | 434,325 | $399.9M | 0.06% | −78,123−15.2% | Reduced |
| Rafferty Asset Management, LLC | 379,318 | $349.2M | 1.13% | −149,806−28.3% | Reduced |
| Barclays PLC | 362,062 | $333.3M | 0.12% | −76,537−17.5% | Reduced |
| Voya Investment Management LLC | 359,312 | $330.8M | 0.33% | +131,177+57.5% | Added |
| Legal & General Group Plc | 358,429 | $330.0M | 0.07% | +7,855+2.2% | Added |
| Charles Schwab Investment Management Inc | 357,910 | $329.5M | 0.05% | +13,949+4.1% | Added |
| Kayne Anderson Rudnick Investment Management LLC | 355,363 | $327.2M | 0.80% | −8,595−2.4% | Reduced |
| UBS Asset Management Americas Inc | 315,922 | $290.9M | 0.06% | −7,371−2.3% | Reduced |
| Bank of New York Mellon Corp | 304,091 | $280.0M | 0.05% | −32,459−9.6% | Reduced |
| Alliancebernstein L.P. | 280,703 | $258.4M | 0.08% | −33,433−10.6% | Reduced |
| Vaughan Nelson Investment Management, L.P. | 272,529 | $250.9M | 2.28% | +482+0.2% | Added |
| Raymond James Financial Inc | 267,212 | $246.0M | 0.08% | −19,236−6.7% | Reduced |
| Citadel Advisors LLC | 260,466 | $239.8M | 0.19% | +252,816+3,304.8% | Added |
| American Century Companies Inc | 214,950 | $197.9M | 0.10% | +33,024+18.2% | Added |
| Royal Bank of Canada | 206,617 | $190.2M | 0.03% | +16,215+8.5% | Added |
| Earnest Partners LLC | 205,779 | $189.4M | 0.82% | +2,643+1.3% | Added |
| SEI Investments Co | 199,686 | $183.8M | 0.20% | +199+0.1% | Added |
| Artisan Partners Limited Partnership | 192,749 | $177.5M | 0.26% | −14,898−7.2% | Reduced |
| Macquarie Group Ltd | 180,795 | $166.4M | 0.19% | −13,699−7.0% | Reduced |
| DekaBank Deutsche Girozentrale | 190,443 | $165.9M | 0.28% | 00.0% | Unchanged |
| Citigroup Inc | 178,183 | $164.0M | 0.11% | −100,746−36.1% | Reduced |
| Deutsche Bank AG | 173,754 | $160.0M | 0.05% | +9,836+6.0% | Added |
| Millennium Management LLC | 170,490 | $157.0M | 0.12% | +154,958+997.7% | Added |
| Allspring Global Investments Holdings, LLC | 171,221 | $156.8M | 0.25% | +4,379+2.6% | Added |
| Principal Financial Group Inc | 169,712 | $156.2M | 0.08% | −133−0.1% | Reduced |
| BNP Paribas Arbitrage, SA | 168,996 | $155.6M | 0.12% | −26,138−13.4% | Reduced |
| Neuberger Berman Group LLC | 167,806 | $154.5M | 0.11% | +57,417+52.0% | Added |
| Frontier Capital Management Co LLC | 163,916 | $150.9M | 1.35% | +31,073+23.4% | Added |
| Ensign Peak Advisors, Inc | 163,239 | $150.3M | 0.25% | −29,552−15.3% | Reduced |
| Ameriprise Financial Inc | 160,204 | $147.5M | 0.03% | −58,773−26.8% | Reduced |
| Envestnet Asset Management Inc | 159,740 | $147.1M | 0.04% | −10,167−6.0% | Reduced |
| Pictet Asset Management Holding SA | 157,791 | $145.2M | 0.14% | −7,374−4.5% | Reduced |
| Dimensional Fund Advisors LP | 156,577 | $144.1M | 0.03% | +6,216+4.1% | Added |
| DF Dent & Co Inc | 149,730 | $137.8M | 1.78% | −21,348−12.5% | Reduced |
| Amundi | 137,635 | $131.1M | 0.04% | +5,515+4.2% | Added |
| TimesSquare Capital Management, LLC | 141,011 | $129.8M | 1.86% | −6,896−4.7% | Reduced |
| Swiss National Bank | 138,100 | $127.1M | 0.07% | −6,800−4.7% | Reduced |
| HSBC Holdings PLC | 137,912 | $126.3M | 0.07% | −4,654−3.3% | Reduced |
| Nuveen, LLC | 134,146 | $123.5M | 0.03% | −3,652−2.7% | Reduced |
| Marshall Wace, LLP | 132,145 | $121.7M | 0.13% | +132,145 | New |
| Natixis Advisors, L.P. | 131,259 | $120.8M | 0.18% | −1,330−1.0% | Reduced |
| Impax Asset Management Group plc | 131,401 | $120.0M | 0.70% | −42,443−24.4% | Reduced |
| Susquehanna International Group, LLP | 129,902 | $119.6M | 0.17% | +53,829+70.8% | Added |
| Janus Henderson Group PLC | 127,738 | $117.5M | 0.05% | +309+0.2% | Added |
| Nomura Asset Management Co Ltd | 122,401 | $112.7M | 0.29% | +53,629+78.0% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 116,896 | $107.6M | 0.20% | −10,014−7.9% | Reduced |
| AXA Investment Managers S.A. | 115,618 | $106.4M | 0.29% | +115,618 | New |
| Sumitomo Mitsui Trust Holdings, Inc. | 112,504 | $103.6M | 0.06% | −120.0% | Reduced |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 112,332 | $103.4M | 0.07% | +2,398+2.2% | Added |
| Manufacturers Life Insurance Company, The | 111,107 | $102.3M | 0.08% | +4,069+3.8% | Added |
| Baird Financial Group, Inc. | 108,385 | $99.8M | 0.16% | +4,052+3.9% | Added |
| EULAV Asset Management | 108,277 | $99.7M | 2.32% | −7,999−6.9% | Reduced |
| Congress Asset Management Co | 108,271 | $99.7M | 0.66% | −16,898−13.5% | Reduced |
| Rhumbline Advisers | 107,428 | $98.9M | 0.08% | −9,666−8.3% | Reduced |
| Robeco Schweiz AG | 103,237 | $95.0M | 2.14% | −3,506−3.3% | Reduced |
| Stifel Financial Corp | 99,322 | $91.5M | 0.08% | −6,011−5.7% | Reduced |
| Victory Capital Management Inc | 88,206 | $81.2M | 0.05% | −3,651−4.0% | Reduced |
| Candriam Luxembourg S.C.A. | 85,907 | $79.1M | 0.41% | +5,561+6.9% | Added |
| California Public Employees Retirement System | 85,230 | $78.5M | 0.05% | −13,953−14.1% | Reduced |
| Adage Capital Partners GP, L.L.C. | 83,152 | $76.6M | 0.12% | +7,200+9.5% | Added |
| Allianz Asset Management GmbH | 80,277 | $73.9M | 0.09% | −30,275−27.4% | Reduced |
| National Pension Service | 79,014 | $72.7M | 0.06% | +1,863+2.4% | Added |
| STRS Ohio | 77,807 | $71.6M | 0.26% | −31,599−28.9% | Reduced |
| Analog Century Management LP | 77,591 | $71.4M | 3.84% | +77,591 | New |
| California State Teachers Retirement System | 74,748 | $68.8M | 0.07% | +396+0.5% | Added |
| Zevenbergen Capital Investments LLC | 74,668 | $68.7M | 1.34% | +32,240+76.0% | Added |
| TD Asset Management Inc | 74,628 | $68.7M | 0.06% | −15,158−16.9% | Reduced |
| Wells Fargo & Company | 71,877 | $66.2M | 0.01% | −10,208−12.4% | Reduced |
| Resona Asset Management Co.,Ltd. | 70,729 | $64.5M | 0.31% | −10,064−12.5% | Reduced |
| Caisse de Depot Et Placement du Quebec | 66,754 | $61.5M | 0.11% | +808+1.2% | Added |
| HRT Financial LP | 65,877 | $60.6M | 0.22% | +65,877 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 65,413 | $60.2M | 0.14% | −5,270−7.5% | Reduced |
| Grandeur Peak Global Advisors, LLC | 65,175 | $60.0M | 8.05% | −3,111−4.6% | Reduced |
| Great West Life Assurance Co | 67,650 | $59.9M | 0.09% | +741+1.1% | Added |
| Toronto Dominion Bank | 65,057 | $59.9M | 0.12% | +40,728+167.4% | Added |
| Panagora Asset Management Inc | 62,607 | $57.6M | 0.23% | +224+0.4% | Added |
| CIBC Private Wealth Group, LLC | 62,363 | $57.4M | 0.10% | −1,277−2.0% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 58,354 | $53.7M | 0.17% | −19,409−25.0% | Reduced |
| LPL Financial LLC | 58,083 | $53.5M | 0.02% | −1,172−2.0% | Reduced |
| Pacer Advisors, Inc. | 57,643 | $53.1M | 0.14% | +3,968+7.4% | Added |