Monolithic Power SystemsMPWR
13F holders, Q2 2025 (June 30)906holders +44
123new positions
83sold out
6famous investors
$731.29avg. 13F price*
At the end of Q2 2025, 906 institutions reported holding Monolithic Power Systems Inc. (MPWR) in their 13F filings, up 44 from Q1 2025. 123 opened new positions and 83 sold out. The largest holders were Vanguard Group Inc. ($4.3B), BlackRock, Inc. ($3.8B) and FMR LLC ($2.5B). 6 famous investors held it, including Ron Baron (0.1% of Baron Capital (BAMCO)'s portfolio), Joel Greenblatt (0.1% of Gotham Asset Management's portfolio) and Cliff Asness (0.0% of AQR Capital Management's portfolio).
- Company
- Monolithic Power Systems Inc.
- Sector
- Technology
- CUSIP
- 609839105
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2025 → Q2 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 123 | $177.8M |
| Exits | 83 | $680.8M |
All 13F filers, Q1 2025 → Q2 2025: 4,000,764 shares bought and 3,317,117 shares sold, net +683,647 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 906 holders
| Vanguard Group Inc. | 0.07% | Add +0.3% | 5,939,946 | $4.3B |
| BlackRock, Inc. | 0.07% | Add +6.4% | 5,229,221 | $3.8B |
| FMR LLC | 0.14% | Reduce -3.0% | 3,392,704 | $2.5B |
| State Street Corp. | 0.06% | Add +0.2% | 2,120,034 | $1.6B |
| T. Rowe Price Associates Inc. | 0.17% | Add +2.7% | 2,088,804 | $1.5B |
| Geode Capital Management, LLC | 0.07% | Reduce -6.2% | 1,318,541 | $962.0M |
| Invesco Ltd. | 0.15% | Reduce -6.7% | 1,166,059 | $852.8M |
| Franklin Resources Inc. | 0.21% | Reduce -19.0% | 1,088,297 | $796.0M |
| Van Eck Associates Corp. | 0.79% | Reduce -9.0% | 952,060 | $696.3M |
| T. Rowe Price Investment Management, Inc. | 0.43% | Add +195.1% | 927,806 | $678.6M |
| Brown Advisory Inc. | 0.83% | Reduce -7.4% | 864,309 | $632.2M |
| JPMorgan Chase & Co. | 0.04% | Add +36.1% | 856,725 | $626.6M |
| Wellington Management Group LLP | 0.09% | Reduce -7.7% | 703,151 | $514.3M |
| Bank of America Corp. | 0.04% | Add +18.0% | 692,747 | $506.7M |
| Norges Bank | 0.05% | Add +0.8% | 598,887 | $438.0M |
| Morgan Stanley | 0.03% | Add +4.5% | 565,019 | $413.2M |
| Rafferty Asset Management, LLC | 1.28% | Add +36.1% | 529,124 | $387.0M |
| FIL Ltd | 0.33% | Add +373.0% | 523,073 | $382.6M |
| Goldman Sachs Group Inc. | 0.06% | Add +71.7% | 512,448 | $374.8M |
| UBS Group AG | 0.08% | Add +40.6% | 502,536 | $367.5M |
| Massachusetts Financial Services Co. | 0.11% | Add +6.1% | 485,388 | $355.0M |
| Northern Trust Corp. | 0.05% | Reduce -3.3% | 482,057 | $352.6M |
| Barclays PLC | 0.13% | Add +19.0% | 438,599 | $320.8M |
| Kayne Anderson Rudnick Investment Management LLC | 0.64% | Add +0.8% | 363,958 | $266.2M |
| Legal & General Group Plc | 0.06% | Add +4.1% | 350,574 | $256.4M |
| Charles Schwab Investment Management Inc. | 0.04% | Add +2.4% | 343,961 | $251.6M |
| Bank of New York Mellon Corp | 0.05% | Reduce -5.3% | 336,550 | $246.1M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.05% | Add +9.9% | 323,293 | $236.5M |
| Alliancebernstein L.P. | 0.07% | Reduce -4.1% | 314,136 | $229.8M |
| Raymond James Financial Inc. | 0.07% | Add +16.6% | 286,448 | $209.5M |
| Citigroup Inc. | 0.14% | Add +2.2% | 278,929 | $204.0M |
| Vaughan Nelson Investment Management, L.P. | 1.86% | Add +6.3% | 272,047 | $199.0M |
| First Trust Advisors LP | 0.16% | Add +46.8% | 269,179 | $196.9M |
| Voya Investment Management LLC | 0.19% | Add +30.2% | 228,135 | $166.9M |
| Ameriprise Financial Inc. | 0.04% | Add +23.5% | 218,977 | $160.2M |
| Artisan Partners Limited Partnership | 0.23% | Reduce -39.3% | 207,647 | $151.9M |
| Earnest Partners LLC | 0.67% | Add +0.0% | 203,136 | $148.6M |
| Sei Investments Co. | 0.17% | Reduce -0.5% | 199,487 | $145.9M |
| BNP Paribas Financial Markets | 0.11% | Reduce -31.3% | 195,134 | $142.7M |
| Macquarie Group Ltd. | 0.17% | Reduce -13.5% | 194,494 | $142.2M |
| Ensign Peak Advisors, Inc | 0.24% | Reduce -40.5% | 192,791 | $141.0M |
| Royal Bank of Canada | 0.03% | Add +30.2% | 190,402 | $139.3M |
| DekaBank Deutsche Girozentrale | 0.25% | Add +0.2% | 190,443 | $138.0M |
| American Century Companies Inc. | 0.07% | Reduce -10.5% | 181,926 | $133.1M |
| Impax Asset Management Group plc | 0.73% | Reduce -16.7% | 173,844 | $126.2M |
| DF Dent & Co. Inc. | 1.59% | Add +6.9% | 171,078 | $125.1M |
| Allspring Global Investments Holdings, LLC | 0.21% | Reduce -8.9% | 166,842 | $124.6M |
| Envestnet Asset Management Inc. | 0.04% | Add +1.4% | 169,907 | $124.3M |
| Principal Financial Group Inc. | 0.07% | Reduce -2.8% | 169,845 | $124.2M |
| Pictet Asset Management Holding SA | 0.12% | Reduce -2.9% | 165,165 | $120.8M |
| Deutsche Bank AG | 0.04% | Reduce -3.1% | 163,918 | $119.9M |
| Dimensional Fund Advisors LP | 0.03% | Reduce -6.3% | 150,361 | $110.0M |
| TimesSquare Capital Management, LLC | 1.56% | Add +1.8% | 147,907 | $108.2M |
| Swiss National Bank | 0.06% | Add +5.3% | 144,900 | $106.0M |
| HSBC Holdings PLC | 0.07% | Reduce -10.2% | 142,566 | $104.4M |
| Nuveen, LLC | 0.03% | Reduce -24.4% | 137,798 | $100.8M |
| Frontier Capital Management Co. LLC | 0.90% | Add +3.2% | 132,843 | $97.2M |
| Natixis Advisors, LLC | 0.15% | Add +0.3% | 132,589 | $97.0M |
| Janus Henderson Group PLC | 0.05% | Add +20.7% | 127,429 | $93.2M |
| Healthcare of Ontario Pension Plan Trust Fund | 0.19% | Add +22164.9% | 126,910 | $92.8M |
| Amundi | 0.03% | Add +25.1% | 132,120 | $92.6M |
| Congress Asset Management Co. | 0.63% | Add +2.0% | 125,169 | $91.5M |
| Rokos Capital Management LLP | 1.51% | Reduce -6.1% | 121,436 | $88.8M |
| Rhumbline Advisers | 0.07% | Add +0.5% | 117,094 | $85.6M |
| EULAV Asset Management | 2.00% | No change | 116,276 | $85.0M |
| Sumitomo Mitsui Trust Group, Inc. | 0.05% | Reduce -0.1% | 112,516 | $82.3M |
| Allianz Asset Management GmbH | 0.11% | Add +33.3% | 110,552 | $80.9M |
| Neuberger Berman Group LLC | 0.06% | Add +7.5% | 110,389 | $80.7M |
| Corient Private Wealth LP | 0.11% | Add +90.0% | 110,282 | $80.7M |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.06% | Add +10.8% | 109,934 | $80.4M |
| STRS Ohio | 0.30% | Reduce -4.0% | 109,406 | $80.0M |
| Manufacturers Life Insurance Company, The | 0.07% | Reduce -13.3% | 107,038 | $78.3M |
| Robeco Schweiz AG | 1.80% | Reduce -8.0% | 106,743 | $78.1M |
| Stifel Financial Corp. | 0.07% | Add +26.5% | 105,333 | $77.0M |
| AXA S.A. | 0.22% | Add +47.8% | 104,584 | $76.5M |
| Baird Financial Group, Inc. | 0.13% | Reduce -3.9% | 104,333 | $76.3M |
| California Public Employees Retirement System | 0.05% | Add +3.2% | 99,183 | $72.5M |
| Victory Capital Management Inc. | 0.04% | Reduce -0.3% | 91,857 | $67.2M |
| TD Asset Management Inc | 0.06% | Add +125.7% | 89,786 | $65.7M |
| Wells Fargo & Company | 0.01% | Add +19.5% | 82,085 | $60.0M |
| Resona Asset Management Co.,Ltd. | 0.29% | Reduce -0.9% | 80,793 | $59.2M |
| Candriam S.C.A. | 0.34% | Add +4.8% | 80,346 | $58.8M |
| Mirae Asset Global Investments Co., Ltd. | 0.20% | Add +4.0% | 77,763 | $56.9M |
| National Pension Service | 0.05% | Add +0.7% | 77,151 | $56.4M |
| Susquehanna International Group, LLP | 0.09% | Add +17.3% | 76,073 | $55.6M |
| Adage Capital Partners Gp, L.L.C. | 0.09% | Reduce -34.6% | 75,952 | $55.5M |
| California State Teachers Retirement System | 0.06% | Add +0.3% | 74,352 | $54.4M |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.13% | Reduce -4.0% | 70,683 | $51.7M |
| Jupiter Asset Management Ltd. | 0.43% | Add +170.6% | 70,356 | $51.5M |
| Nomura Asset Management Co. Ltd. | 0.14% | Add +316.8% | 68,772 | $50.3M |
| Grandeur Peak Global Advisors, LLC | 6.02% | Reduce -5.5% | 68,286 | $49.9M |
| CANADA LIFE ASSURANCE Co | 0.08% | Add +7.0% | 66,909 | $49.0M |
| Caisse de depot et placement du Quebec | 0.10% | Reduce -33.5% | 65,946 | $48.2M |
| CIBC Private Wealth Group LLC | 0.08% | Reduce -4.8% | 63,640 | $46.5M |
| Panagora Asset Management Inc. | 0.21% | Reduce -34.0% | 62,383 | $45.6M |
| LPL Financial LLC | 0.01% | Reduce -47.1% | 59,255 | $43.3M |
| Canada Pension Plan Investment Board | 0.04% | Reduce -1.0% | 56,775 | $41.5M |
| Pembroke Management, LTD | 4.86% | Add +30.2% | 54,969 | $40.2M |
| Pacer Advisors, Inc. | 0.10% | Add +454.1% | 53,675 | $39.3M |
| Andra AP-fonden | 0.54% | Add +27.0% | 53,119 | $38.9M |
"% of holder's portfolio" is MPWR's weight in each manager's 13F, not the share of Monolithic Power Systems Inc. the manager owns.