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 |
|---|---|---|---|---|---|
| Stephens Investment Management Group LLC | 12,825 | $14.0M | 0.19% | +989+8.4% | Added |
| Xponance, Inc. | 12,887 | $14.1M | 0.10% | +1,017+8.6% | Added |
| Arizona State Retirement System | 13,018 | $14.2M | 0.08% | −110−0.8% | Reduced |
| Lombard Odier Asset Management (Europe) Ltd | 13,083 | $14.3M | 0.79% | −567−4.2% | Reduced |
| Silvant Capital Management LLC | 13,106 | $14.3M | 0.50% | +211+1.6% | Added |
| Czech National Bank | 13,266 | $14.5M | 0.10% | +634+5.0% | Added |
| 1832 Asset Management L.P. | 13,400 | $14.7M | 0.02% | −2,542−15.9% | Reduced |
| MetLife Investment Management | 13,432 | $14.7M | 0.07% | −260−1.9% | Reduced |
| Citadel Advisors LLC | 13,512 | $14.8M | 0.01% | +2,283+20.3% | Added |
| Harvest Fund Management Co., Ltd | 13,685 | $15.0M | 0.64% | +139+1.0% | Added |
| Rakuten Investment Management, Inc. | 14,933 | $15.0M | 0.03% | +1,626+12.2% | Added |
| Westwood Holdings Group Inc. | 13,713 | $15.0M | 0.11% | −3,665−21.1% | Reduced |
| Erste Asset Management GmbH | 14,612 | $15.0M | 0.14% | +14,612 | New |
| Cullen/Frost Bankers, Inc. | 13,755 | $15.0M | 0.17% | +441+3.3% | Added |
| Robeco Institutional Asset Management B.V. | 13,873 | $15.2M | 0.02% | +8,790+172.9% | Added |
| Cetera Investment Advisers | 13,952 | $15.3M | 0.02% | +1,158+9.1% | Added |
| State of Michigan Retirement System | 13,970 | $15.3M | 0.08% | +200+1.5% | Added |
| Guggenheim Capital LLC | 14,080 | $15.4M | 0.12% | −2,148−13.2% | Reduced |
| The PNC Financial Services Group, Inc. | 14,172 | $15.5M | 0.01% | +868+6.5% | Added |
| Advisor Group Holdings, Inc. | 14,329 | $15.7M | 0.02% | −2,501−14.9% | Reduced |
| Banco Bilbao Vizcaya Argentaria, S.A. | 14,525 | $15.8M | 0.11% | +12,621+662.9% | Added |
| Night Squared LP | 14,592 | $16.0M | 2.34% | +11,885+439.0% | Added |
| Daiwa Securities Group Inc. | 15,010 | $16.4M | 0.05% | +700+4.9% | Added |
| Freestone Grove Partners LP | 15,015 | $16.4M | 0.12% | +7,486+99.4% | Added |
| iA Global Asset Management Inc. | 15,146 | $16.6M | 0.23% | +9,190+154.3% | Added |
| Toronto Dominion Bank | 15,439 | $16.9M | 0.03% | −8,210−34.7% | Reduced |
| Sit Investment Associates Inc | 15,491 | $16.9M | 0.34% | −425−2.7% | Reduced |
| CI Private Wealth, LLC | 15,684 | $17.1M | 0.02% | −35,649−69.4% | Reduced |
| Moran Wealth Management, LLC | 15,725 | $17.2M | 0.53% | −138−0.9% | Reduced |
| Copeland Capital Management, LLC | 15,755 | $17.2M | 0.38% | −3,399−17.7% | Reduced |
| State of Tennessee, Treasury Department | 15,879 | $17.4M | 0.06% | −780−4.7% | Reduced |
| Nisa Investment Advisors, LLC | 15,967 | $17.5M | 0.06% | −1,883−10.5% | Reduced |
| Vident Advisory, LLC | 16,079 | $17.6M | 0.15% | −988−5.8% | Reduced |
| State of New Jersey Common Pension Fund D | 16,338 | $17.9M | 0.07% | +50+0.3% | Added |
| Sanctuary Advisors, LLC | 16,406 | $17.9M | 0.10% | −658−3.9% | Reduced |
| Fred Alger Management, LLC | 16,414 | $18.0M | 0.08% | −1,185−6.7% | Reduced |
| Clearbridge Investments, LLC | 16,717 | $18.3M | 0.02% | +7,506+81.5% | Added |
| OP Asset Management Ltd | 16,924 | $18.5M | 0.19% | +11,857+234.0% | Added |
| Ceredex Value Advisors LLC | 17,275 | $18.9M | 0.59% | +17,275 | New |
| KLP Kapitalforvaltning AS | 17,720 | $19.4M | 0.08% | +480+2.8% | Added |
| KBC Group NV | 17,820 | $19.5M | 0.05% | +5,193+41.1% | Added |
| Korea Investment CORP | 17,940 | $19.6M | 0.04% | −11,285−38.6% | Reduced |
| Tredje AP-fonden | 18,171 | $19.9M | 0.11% | +13,599+297.4% | Added |
| Parnassus Investments | 18,172 | $19.9M | 0.06% | −8,418−31.7% | Reduced |
| Mediolanum International Funds Ltd | 19,930 | $20.0M | 0.21% | −2,386−10.7% | Reduced |
| Mn Services Vermogensbeheer B.V. | 18,353 | $20.1M | 0.13% | 00.0% | Unchanged |
| Jupiter Asset Management Ltd | 18,550 | $20.3M | 0.11% | −2,425−11.6% | Reduced |
| Creative Planning | 18,681 | $20.4M | 0.01% | +1,177+6.7% | Added |
| GDS Wealth Management | 19,252 | $21.0M | 1.26% | +993+5.4% | Added |
| Treasurer of the State of North Carolina | 19,816 | $21.7M | 0.07% | +420+2.2% | Added |
| Arcadia Investment Management Corp | 19,901 | $21.8M | 3.73% | −312−1.5% | Reduced |
| Zurich Insurance Group Ltd | 20,198 | $22.1M | 0.17% | +20,198 | New |
| Assetmark, Inc | 20,321 | $22.2M | 0.05% | −60.0% | Reduced |
| CIBC Asset Management Inc | 20,386 | $22.3M | 0.05% | +345+1.7% | Added |
| Glenmede Trust Co NA | 20,651 | $22.6M | 0.11% | −148−0.7% | Reduced |
| Ostrum Asset Management | 20,756 | $22.7M | 1.27% | −26,126−55.7% | Reduced |
| Public Employees Retirement System of Ohio | 21,147 | $23.1M | 0.07% | −976−4.4% | Reduced |
| Asset Management One Co.,Ltd. | 21,157 | $23.1M | 0.07% | −316−1.5% | Reduced |
| APG Asset Management N.V. | 24,660 | $23.4M | 0.07% | −2,918−10.6% | Reduced |
| Fjarde Ap-Fonden /Fourth Swedish National Pension Fund | 21,498 | $23.5M | 0.13% | +8,340+63.4% | Added |
| Whittier Trust Co of Nevada Inc | 20,227 | $23.9M | 0.49% | −2,637−11.5% | Reduced |
| Sapient Capital LLC | 22,370 | $24.5M | 0.37% | −13,194−37.1% | Reduced |
| Gotham Asset Management, LLC | 22,482 | $24.6M | 0.08% | +2,321+11.5% | Added |
| Avalon Global Asset Management LLC | 22,500 | $24.6M | 5.79% | 00.0% | Unchanged |
| Prudential Financial Inc | 22,814 | $24.9M | 0.03% | −662−2.8% | Reduced |
| Vanguard Investments Australia, Ltd. | 23,915 | $26.1M | 0.08% | +23,915 | New |
| Chevy Chase Trust Holdings, Inc. | 24,252 | $26.5M | 0.08% | −325−1.3% | Reduced |
| Sora Investors LLC | 24,585 | $26.9M | 2.48% | +9,814+66.4% | Added |
| State of Wisconsin Investment Board | 25,655 | $28.0M | 0.06% | −3,702−12.6% | Reduced |
| Nissay Asset Management Corp | 25,775 | $28.2M | 0.15% | +1,023+4.1% | Added |
| Fifth Third Bancorp | 25,811 | $28.2M | 0.05% | +8,987+53.4% | Added |
| DnB Asset Management AS | 26,049 | $28.5M | 0.10% | −350−1.3% | Reduced |
| Segall Bryant & Hamill, LLC | 26,061 | $28.5M | 0.41% | −3,922−13.1% | Reduced |
| NZS Capital, LLC | 26,679 | $29.2M | 0.97% | +470+1.8% | Added |
| New York State Common Retirement Fund | 26,706 | $29.2M | 0.04% | 00.0% | Unchanged |
| SEB Asset Management AB | 27,291 | $29.8M | 0.13% | +27,291 | New |
| Park National Corp | 28,114 | $30.7M | 0.94% | −13,492−32.4% | Reduced |
| Royal London Asset Management Ltd | 28,955 | $31.7M | 0.07% | −376−1.3% | Reduced |
| Schroder Investment Management Group | 31,849 | $31.9M | 0.03% | +4,391+16.0% | Added |
| Natixis | 29,420 | $32.2M | 0.13% | −1,042−3.4% | Reduced |
| Cookson Peirce & Co Inc | 29,474 | $32.2M | 1.36% | +8,138+38.1% | Added |
| Susquehanna International Group, LLP | 29,963 | $32.8M | 0.04% | −26,892−47.3% | Reduced |
| Blair William & Co | 30,557 | $33.4M | 0.10% | +16,910+123.9% | Added |
| Swiss Life Asset Management Ltd | 31,027 | $33.9M | 0.17% | +2,223+7.7% | Added |
| PFA Pension, Forsikringsaktieselskab | 31,292 | $34.2M | 0.10% | −22−0.1% | Reduced |
| Handelsbanken Fonder AB | 31,433 | $34.4M | 0.11% | −3,682−10.5% | Reduced |
| Pinnacle Financial Partners, Inc. | 31,621 | $34.6M | 0.26% | +1,649+5.5% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 31,908 | $34.9M | 0.09% | +2,309+7.8% | Added |
| Squarepoint Ops LLC | 32,420 | $35.4M | 0.08% | +30,870+1,991.6% | Added |
| Swedbank AB | 32,644 | $35.7M | 0.04% | −4,750−12.7% | Reduced |
| Danske Bank A/S | 32,674 | $35.7M | 0.09% | +8,257+33.8% | Added |
| Public Employees Retirement Association of Colorado | 32,689 | $35.7M | 0.14% | −6,900−17.4% | Reduced |
| NEOS Investment Management LLC | 32,742 | $35.8M | 0.18% | +18,813+135.1% | Added |
| Vontobel Holding Ltd. | 33,260 | $36.4M | 0.13% | −623−1.8% | Reduced |
| NewEdge Wealth, LLC | 33,727 | $36.9M | 0.44% | +15,831+88.5% | Added |
| Empowered Funds, LLC | 34,093 | $37.3M | 0.24% | +34,093 | New |
| Pembroke Management, LTD | 34,397 | $37.6M | 5.44% | −18,745−35.3% | Reduced |
| Toroso Investments, LLC | 35,384 | $38.6M | 0.12% | +9,305+35.7% | Added |
| Azimuth Capital Investment Management LLC | 36,073 | $39.4M | 1.48% | −137−0.4% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 36,439 | $39.5M | 0.05% | +1,287+3.7% | Added |