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, 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 |
|---|---|---|---|---|---|
| BlackRock, Inc. | 6,072,467 | $6.64B | 0.12% | +110,076+1.8% | Added |
| FMR LLC | 4,400,831 | $4.81B | 0.25% | +423,823+10.7% | Added |
| Vanguard Capital Management LLC | 3,083,449 | $3.37B | 0.08% | +3,083,449 | New |
| Vanguard Portfolio Management LLC | 2,516,492 | $2.75B | 0.14% | +2,516,492 | New |
| Invesco Ltd. | 2,515,987 | $2.75B | 0.27% | +5,007+0.2% | Added |
| State Street Corp | 2,188,454 | $2.40B | 0.08% | +8,035+0.4% | Added |
| Geode Capital Management, LLC | 1,432,066 | $1.56B | 0.10% | +49,786+3.6% | Added |
| Price T Rowe Associates Inc | 1,262,954 | $1.38B | 0.16% | −428,440−25.3% | Reduced |
| Franklin Resources Inc | 928,671 | $1.02B | 0.25% | −120,738−11.5% | Reduced |
| T. Rowe Price Investment Management, Inc. | 721,622 | $789.0M | 0.54% | −2,872−0.4% | Reduced |
| Morgan Stanley | 656,367 | $717.6M | 0.04% | +7,297+1.1% | Added |
| First Trust Advisors LP | 591,353 | $646.6M | 0.46% | −110,101−15.7% | Reduced |
| Goldman Sachs Group Inc | 568,064 | $621.1M | 0.08% | −25,678−4.3% | Reduced |
| Massachusetts Financial Services Co | 567,769 | $620.7M | 0.21% | −2,950−0.5% | Reduced |
| Barclays PLC | 555,808 | $607.7M | 0.22% | −48,994−8.1% | Reduced |
| UBS Group AG | 540,413 | $590.9M | 0.10% | +101,428+23.1% | Added |
| Van Eck Associates Corp | 524,571 | $573.5M | 0.43% | +22,259+4.4% | Added |
| JPMorgan Chase & Co | 554,919 | $556.2M | 0.04% | +42,646+8.3% | Added |
| Northern Trust Corp | 489,120 | $534.8M | 0.07% | +5,420+1.1% | Added |
| Royal Bank of Canada | 473,368 | $517.6M | 0.10% | +296,788+168.1% | Added |
| Voya Investment Management LLC | 393,559 | $429.9M | 0.45% | +53,827+15.8% | Added |
| Bank of America Corp | 382,162 | $417.8M | 0.03% | −167,413−30.5% | Reduced |
| Legal & General Group Plc | 380,089 | $415.6M | 0.10% | +23,450+6.6% | Added |
| Brown Advisory Inc | 379,897 | $415.4M | 0.68% | −120,858−24.1% | Reduced |
| Charles Schwab Investment Management Inc | 376,374 | $411.5M | 0.06% | +10,990+3.0% | Added |
| Citigroup Inc | 340,832 | $372.6M | 0.24% | +95,353+38.8% | Added |
| Rafferty Asset Management, LLC | 317,473 | $347.1M | 1.41% | −78,991−19.9% | Reduced |
| UBS Asset Management Americas Inc | 302,205 | $330.4M | 0.07% | −16,592−5.2% | Reduced |
| Bank of New York Mellon Corp | 289,830 | $316.9M | 0.06% | −5,289−1.8% | Reduced |
| Vanguard Fiduciary Trust Co | 278,499 | $304.5M | 0.08% | +278,499 | New |
| Kayne Anderson Rudnick Investment Management LLC | 266,670 | $291.6M | 0.86% | −27,373−9.3% | Reduced |
| Wellington Management Group LLP | 250,511 | $273.9M | 0.05% | −134,259−34.9% | Reduced |
| Anther Capital Ltd | 233,288 | $255.1M | 6.67% | +233,288 | New |
| BNP Paribas Arbitrage, SA | 224,011 | $244.9M | 0.16% | −23,116−9.4% | Reduced |
| American Century Companies Inc | 199,685 | $218.3M | 0.11% | −3,879−1.9% | Reduced |
| Raymond James Financial Inc | 196,060 | $205.4M | 0.06% | −15,424−7.3% | Reduced |
| SG Americas Securities, LLC | 181,766 | $198.7M | 0.22% | −80,465−30.7% | Reduced |
| Deutsche Bank AG | 181,726 | $198.7M | 0.07% | +7,401+4.2% | Added |
| DekaBank Deutsche Girozentrale | 190,443 | $194.1M | 0.32% | 00.0% | Unchanged |
| Principal Financial Group Inc | 174,199 | $190.5M | 0.10% | +6,934+4.1% | Added |
| California Public Employees Retirement System | 159,658 | $174.6M | 0.11% | +74,822+88.2% | Added |
| Amundi | 158,907 | $173.7M | 0.05% | +29,436+22.7% | Added |
| HSBC Holdings PLC | 158,873 | $173.5M | 0.10% | −41,753−20.8% | Reduced |
| Nuveen, LLC | 155,854 | $170.4M | 0.05% | −5,395−3.3% | Reduced |
| SEI Investments Co | 155,291 | $169.8M | 0.16% | −11,402−6.8% | Reduced |
| FIL Ltd | 154,637 | $169.1M | 0.13% | −161,452−51.1% | Reduced |
| Dimensional Fund Advisors LP | 153,767 | $168.1M | 0.03% | +2,729+1.8% | Added |
| Earnest Partners LLC | 151,771 | $165.9M | 0.68% | −4,872−3.1% | Reduced |
| Artisan Partners Limited Partnership | 150,873 | $165.0M | 0.27% | −2,989−1.9% | Reduced |
| Neuberger Berman Group LLC | 150,107 | $164.1M | 0.12% | −31,599−17.4% | Reduced |
| Nomura Asset Management International Inc. | 147,967 | $161.8M | 0.28% | −17,267−10.5% | Reduced |
| Nomura Asset Management Co Ltd | 146,876 | $160.6M | 0.41% | +29,857+25.5% | Added |
| Swiss National Bank | 140,540 | $153.7M | 0.09% | +9,280+7.1% | Added |
| Vaughan Nelson Investment Management, L.P. | 139,352 | $152.4M | 1.53% | −118,292−45.9% | Reduced |
| TimesSquare Capital Management, LLC | 138,840 | $151.8M | 2.58% | −1,439−1.0% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 135,938 | $148.6M | 0.25% | −66,926−33.0% | Reduced |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 131,582 | $143.9M | 0.10% | +12,879+10.8% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 130,003 | $142.1M | 0.16% | +14,282+12.3% | Added |
| Envestnet Asset Management Inc | 125,855 | $137.6M | 0.04% | +1,221+1.0% | Added |
| Lord, Abbett & Co. LLC | 121,847 | $133.2M | 0.44% | +111,472+1,074.4% | Added |
| Allspring Global Investments Holdings, LLC | 118,806 | $133.0M | 0.22% | −34,522−22.5% | Reduced |
| Pictet Asset Management Holding SA | 120,874 | $132.0M | 0.14% | −32,129−21.0% | Reduced |
| Ameriprise Financial Inc | 119,423 | $130.6M | 0.03% | −14,214−10.6% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 114,464 | $125.1M | 0.08% | −4,551−3.8% | Reduced |
| Victory Capital Management Inc | 111,992 | $122.4M | 0.08% | −2,976−2.6% | Reduced |
| Vanguard Global Advisers, LLC | 106,602 | $116.6M | 0.06% | +106,602 | New |
| Alliancebernstein L.P. | 124,647 | $113.0M | 0.04% | −9,984−7.4% | Reduced |
| Rhumbline Advisers | 102,110 | $111.6M | 0.10% | −2,136−2.0% | Reduced |
| Wells Fargo & Company | 101,698 | $111.2M | 0.02% | +24,129+31.1% | Added |
| Allianz Asset Management GmbH | 96,474 | $105.5M | 0.12% | −49,159−33.8% | Reduced |
| Thrivent Financial for Lutherans | 96,116 | $105.1M | 0.20% | −15,633−14.0% | Reduced |
| Natixis Advisors, L.P. | 95,847 | $104.8M | 0.15% | −32,308−25.2% | Reduced |
| Robeco Schweiz AG | 94,993 | $103.9M | 2.20% | −250.0% | Reduced |
| DF Dent & Co Inc | 88,549 | $96.8M | 1.85% | −38,728−30.4% | Reduced |
| Impax Asset Management Group plc | 88,456 | $96.7M | 0.67% | −17,782−16.7% | Reduced |
| Caisse de Depot Et Placement du Quebec | 85,159 | $93.1M | 0.15% | −52,058−37.9% | Reduced |
| Congress Asset Management Co | 83,343 | $91.1M | 0.65% | −7,343−8.1% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 83,263 | $91.0M | 0.26% | −3,373−3.9% | Reduced |
| Zevenbergen Capital Investments LLC | 81,911 | $89.6M | 2.57% | +533+0.7% | Added |
| Vanguard Asset Management, Ltd | 81,837 | $89.5M | 0.08% | +81,837 | New |
| ProShare Advisors LLC | 81,441 | $89.0M | 0.13% | −18,020−18.1% | Reduced |
| Frontier Capital Management Co LLC | 79,699 | $87.1M | 0.90% | −4,419−5.3% | Reduced |
| Stifel Financial Corp | 79,334 | $86.8M | 0.08% | −1,378−1.7% | Reduced |
| Ensign Peak Advisors, Inc | 78,096 | $85.4M | 0.16% | −3,761−4.6% | Reduced |
| Baird Financial Group, Inc. | 74,271 | $81.2M | 0.13% | −23,339−23.9% | Reduced |
| Adage Capital Partners GP, L.L.C. | 73,652 | $80.5M | 0.12% | −4,200−5.4% | Reduced |
| Quantinno Capital Management LP | 72,771 | $79.6M | 0.13% | +13,207+22.2% | Added |
| California State Teachers Retirement System | 72,363 | $79.1M | 0.08% | −1,706−2.3% | Reduced |
| TD Asset Management Inc | 72,110 | $78.8M | 0.06% | −2,190−2.9% | Reduced |
| Liontrust Investment Partners LLP | 71,266 | $77.9M | 1.33% | +16,333+29.7% | Added |
| STRS Ohio | 69,807 | $76.3M | 0.30% | −8,002−10.3% | Reduced |
| Candriam Luxembourg S.C.A. | 68,944 | $75.4M | 0.39% | −25,503−27.0% | Reduced |
| CIBC Bancorp USA Inc. | 68,819 | $75.2M | 0.10% | +68,819 | New |
| LPL Financial LLC | 67,944 | $74.3M | 0.02% | +3,859+6.0% | Added |
| National Pension Service | 67,715 | $74.0M | 0.06% | −6,812−9.1% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 64,842 | $70.9M | 0.15% | −25,228−28.0% | Reduced |
| National Bank of Canada | 63,635 | $69.6M | 0.07% | −61,839−49.3% | Reduced |
| Bamco Inc | 62,994 | $68.9M | 0.21% | −2,233−3.4% | Reduced |
| Great West Life Assurance Co | 58,721 | $64.4M | 0.12% | +4,565+8.4% | Added |
| EULAV Asset Management | 58,677 | $64.2M | 2.05% | −19,005−24.5% | Reduced |