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, Q1 2026
Institutional positions in Monolithic Power Systems, Inc. as of Mar 31, 2026. 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
- 1,124
- +80 vs. Q4 2025
- Shares held
- 47.3M
- +5.32M (+12.7%) vs. Q4 2025
- Total value
- $51.6B
- +$13.6B (+35.9%) vs. Q4 2025
- New holders
- 181
- 384 more added
- Sold out
- 101
- 408 more reduced
17 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Monolithic Power Systems, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| RMB Capital Management, LLC | 36,275 | $39.7M | 0.71% | +727+2.0% | Added |
| AQR Capital Management LLC | 38,360 | $40.2M | 0.02% | −7,918−17.1% | Reduced |
| Pacer Advisors, Inc. | 38,807 | $42.4M | 0.12% | −11,847−23.4% | Reduced |
| New York State Teachers Retirement System | 39,403 | $43.1M | 0.09% | −391−1.0% | Reduced |
| Standard Life Aberdeen plc | 39,422 | $43.1M | 0.07% | +1,719+4.6% | Added |
| Geneva Capital Management LLC | 39,751 | $43.5M | 0.92% | −3,096−7.2% | Reduced |
| Factory Mutual Insurance Co | 39,972 | $43.7M | 0.49% | +700+1.8% | Added |
| Aviva PLC | 40,871 | $44.7M | 0.07% | +1,016+2.5% | Added |
| Mariner, LLC | 41,163 | $44.9M | 0.05% | +38,487+1,438.2% | Added |
| State Board of Administration of Florida Retirement System | 41,634 | $45.5M | 0.09% | −1,642−3.8% | Reduced |
| Panagora Asset Management Inc | 42,075 | $46.0M | 0.17% | −14,017−25.0% | Reduced |
| Whittier Trust Co | 42,010 | $49.6M | 0.56% | −2,242−5.1% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 46,521 | $50.8M | 0.09% | +5,968+14.7% | Added |
| Bank of Montreal | 46,470 | $50.8M | 0.02% | −5,818−11.1% | Reduced |
| Federated Hermes, Inc. | 48,564 | $53.1M | 0.09% | +28,280+139.4% | Added |
| Jennison Associates LLC | 49,394 | $54.0M | 0.04% | −12,434−20.1% | Reduced |
| Manufacturers Life Insurance Company, The | 49,654 | $54.3M | 0.05% | −4,179−7.8% | Reduced |
| Grandeur Peak Global Advisors, LLC | 51,495 | $56.3M | 13.19% | −20,973−28.9% | Reduced |
| Jones Financial Companies LLLP | 53,948 | $56.8M | 0.03% | +51,534+2,134.8% | Added |
| CBOE Vest Financial, LLC | 52,323 | $57.2M | 0.69% | −14,290−21.5% | Reduced |
| Canada Pension Plan Investment Board | 53,344 | $58.3M | 0.04% | −16,388−23.5% | Reduced |
| Russell Investments Group, Ltd. | 54,074 | $58.6M | 0.06% | +7,325+15.7% | Added |
| Resona Asset Management Co.,Ltd. | 57,707 | $61.7M | 0.31% | −8,679−13.1% | Reduced |
| Eventide Asset Management, LLC | 58,154 | $63.4M | 1.05% | −10,219−14.9% | Reduced |
| EULAV Asset Management | 58,677 | $64.2M | 2.05% | −19,005−24.5% | Reduced |
| Great West Life Assurance Co | 58,721 | $64.4M | 0.12% | +4,565+8.4% | Added |
| Bamco Inc | 62,994 | $68.9M | 0.21% | −2,233−3.4% | Reduced |
| National Bank of Canada | 63,635 | $69.6M | 0.07% | −61,839−49.3% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 64,842 | $70.9M | 0.15% | −25,228−28.0% | Reduced |
| National Pension Service | 67,715 | $74.0M | 0.06% | −6,812−9.1% | Reduced |
| LPL Financial LLC | 67,944 | $74.3M | 0.02% | +3,859+6.0% | Added |
| CIBC Bancorp USA Inc. | 68,819 | $75.2M | 0.10% | +68,819 | New |
| Candriam Luxembourg S.C.A. | 68,944 | $75.4M | 0.39% | −25,503−27.0% | Reduced |
| STRS Ohio | 69,807 | $76.3M | 0.30% | −8,002−10.3% | Reduced |
| Liontrust Investment Partners LLP | 71,266 | $77.9M | 1.33% | +16,333+29.7% | Added |
| TD Asset Management Inc | 72,110 | $78.8M | 0.06% | −2,190−2.9% | Reduced |
| California State Teachers Retirement System | 72,363 | $79.1M | 0.08% | −1,706−2.3% | Reduced |
| Quantinno Capital Management LP | 72,771 | $79.6M | 0.13% | +13,207+22.2% | Added |
| Adage Capital Partners GP, L.L.C. | 73,652 | $80.5M | 0.12% | −4,200−5.4% | Reduced |
| Baird Financial Group, Inc. | 74,271 | $81.2M | 0.13% | −23,339−23.9% | Reduced |
| Ensign Peak Advisors, Inc | 78,096 | $85.4M | 0.16% | −3,761−4.6% | Reduced |
| Stifel Financial Corp | 79,334 | $86.8M | 0.08% | −1,378−1.7% | Reduced |
| Frontier Capital Management Co LLC | 79,699 | $87.1M | 0.90% | −4,419−5.3% | Reduced |
| ProShare Advisors LLC | 81,441 | $89.0M | 0.13% | −18,020−18.1% | Reduced |
| Vanguard Asset Management, Ltd | 81,837 | $89.5M | 0.08% | +81,837 | New |
| Zevenbergen Capital Investments LLC | 81,911 | $89.6M | 2.57% | +533+0.7% | Added |
| Mirae Asset Global Investments Co., Ltd. | 83,263 | $91.0M | 0.26% | −3,373−3.9% | Reduced |
| Congress Asset Management Co | 83,343 | $91.1M | 0.65% | −7,343−8.1% | Reduced |
| Caisse de Depot Et Placement du Quebec | 85,159 | $93.1M | 0.15% | −52,058−37.9% | Reduced |
| Impax Asset Management Group plc | 88,456 | $96.7M | 0.67% | −17,782−16.7% | Reduced |
| DF Dent & Co Inc | 88,549 | $96.8M | 1.85% | −38,728−30.4% | Reduced |
| Robeco Schweiz AG | 94,993 | $103.9M | 2.20% | −250.0% | Reduced |
| Natixis Advisors, L.P. | 95,847 | $104.8M | 0.15% | −32,308−25.2% | Reduced |
| Thrivent Financial for Lutherans | 96,116 | $105.1M | 0.20% | −15,633−14.0% | Reduced |
| Allianz Asset Management GmbH | 96,474 | $105.5M | 0.12% | −49,159−33.8% | Reduced |
| Wells Fargo & Company | 101,698 | $111.2M | 0.02% | +24,129+31.1% | Added |
| Rhumbline Advisers | 102,110 | $111.6M | 0.10% | −2,136−2.0% | Reduced |
| Alliancebernstein L.P. | 124,647 | $113.0M | 0.04% | −9,984−7.4% | Reduced |
| Vanguard Global Advisers, LLC | 106,602 | $116.6M | 0.06% | +106,602 | New |
| Victory Capital Management Inc | 111,992 | $122.4M | 0.08% | −2,976−2.6% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 114,464 | $125.1M | 0.08% | −4,551−3.8% | Reduced |
| Ameriprise Financial Inc | 119,423 | $130.6M | 0.03% | −14,214−10.6% | Reduced |
| Pictet Asset Management Holding SA | 120,874 | $132.0M | 0.14% | −32,129−21.0% | Reduced |
| Allspring Global Investments Holdings, LLC | 118,806 | $133.0M | 0.22% | −34,522−22.5% | Reduced |
| Lord, Abbett & Co. LLC | 121,847 | $133.2M | 0.44% | +111,472+1,074.4% | Added |
| Envestnet Asset Management Inc | 125,855 | $137.6M | 0.04% | +1,221+1.0% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 130,003 | $142.1M | 0.16% | +14,282+12.3% | Added |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 131,582 | $143.9M | 0.10% | +12,879+10.8% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 135,938 | $148.6M | 0.25% | −66,926−33.0% | Reduced |
| TimesSquare Capital Management, LLC | 138,840 | $151.8M | 2.58% | −1,439−1.0% | Reduced |
| Vaughan Nelson Investment Management, L.P. | 139,352 | $152.4M | 1.53% | −118,292−45.9% | Reduced |
| Swiss National Bank | 140,540 | $153.7M | 0.09% | +9,280+7.1% | Added |
| Nomura Asset Management Co Ltd | 146,876 | $160.6M | 0.41% | +29,857+25.5% | Added |
| Nomura Asset Management International Inc. | 147,967 | $161.8M | 0.28% | −17,267−10.5% | Reduced |
| Neuberger Berman Group LLC | 150,107 | $164.1M | 0.12% | −31,599−17.4% | Reduced |
| Artisan Partners Limited Partnership | 150,873 | $165.0M | 0.27% | −2,989−1.9% | Reduced |
| Earnest Partners LLC | 151,771 | $165.9M | 0.68% | −4,872−3.1% | Reduced |
| Dimensional Fund Advisors LP | 153,767 | $168.1M | 0.03% | +2,729+1.8% | Added |
| FIL Ltd | 154,637 | $169.1M | 0.13% | −161,452−51.1% | Reduced |
| SEI Investments Co | 155,291 | $169.8M | 0.16% | −11,402−6.8% | Reduced |
| Nuveen, LLC | 155,854 | $170.4M | 0.05% | −5,395−3.3% | Reduced |
| HSBC Holdings PLC | 158,873 | $173.5M | 0.10% | −41,753−20.8% | Reduced |
| Amundi | 158,907 | $173.7M | 0.05% | +29,436+22.7% | Added |
| California Public Employees Retirement System | 159,658 | $174.6M | 0.11% | +74,822+88.2% | Added |
| Principal Financial Group Inc | 174,199 | $190.5M | 0.10% | +6,934+4.1% | Added |
| DekaBank Deutsche Girozentrale | 190,443 | $194.1M | 0.32% | 00.0% | Unchanged |
| Deutsche Bank AG | 181,726 | $198.7M | 0.07% | +7,401+4.2% | Added |
| SG Americas Securities, LLC | 181,766 | $198.7M | 0.22% | −80,465−30.7% | Reduced |
| Raymond James Financial Inc | 196,060 | $205.4M | 0.06% | −15,424−7.3% | Reduced |
| American Century Companies Inc | 199,685 | $218.3M | 0.11% | −3,879−1.9% | Reduced |
| BNP Paribas Arbitrage, SA | 224,011 | $244.9M | 0.16% | −23,116−9.4% | Reduced |
| Anther Capital Ltd | 233,288 | $255.1M | 6.67% | +233,288 | New |
| Wellington Management Group LLP | 250,511 | $273.9M | 0.05% | −134,259−34.9% | Reduced |
| Kayne Anderson Rudnick Investment Management LLC | 266,670 | $291.6M | 0.86% | −27,373−9.3% | Reduced |
| Vanguard Fiduciary Trust Co | 278,499 | $304.5M | 0.08% | +278,499 | New |
| Bank of New York Mellon Corp | 289,830 | $316.9M | 0.06% | −5,289−1.8% | Reduced |
| UBS Asset Management Americas Inc | 302,205 | $330.4M | 0.07% | −16,592−5.2% | Reduced |
| Rafferty Asset Management, LLC | 317,473 | $347.1M | 1.41% | −78,991−19.9% | Reduced |
| Citigroup Inc | 340,832 | $372.6M | 0.24% | +95,353+38.8% | Added |
| Charles Schwab Investment Management Inc | 376,374 | $411.5M | 0.06% | +10,990+3.0% | Added |