Monolithic Power SystemsMPWR
13F holders, Q4 2025 (December 31)1,062holders +81
130new positions
90sold out
9famous investors
$904.86avg. 13F price*
At the end of Q4 2025, 1,062 institutions reported holding Monolithic Power Systems Inc. (MPWR) in their 13F filings, up 81 from Q3 2025. 130 opened new positions and 90 sold out. The largest holders were Vanguard Group Inc. ($5.5B), BlackRock, Inc. ($5.4B) and FMR LLC ($3.6B). 9 famous investors held it, including Ron Baron (0.2% 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 Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 130 | $214.7M |
| Exits | 90 | $322.1M |
All 13F filers, Q3 2025 → Q4 2025: 5,224,017 shares bought and 4,117,052 shares sold, net +1,106,965 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 1,062 holders
| Vanguard Group Inc. | 0.08% | Reduce -0.7% | 6,034,394 | $5.5B |
| BlackRock, Inc. | 0.09% | Add +4.1% | 5,962,391 | $5.4B |
| FMR LLC | 0.18% | Add +11.6% | 3,977,008 | $3.6B |
| Invesco Ltd. | 0.22% | Add +120.4% | 2,510,980 | $2.3B |
| State Street Corp. | 0.07% | Add +2.1% | 2,180,419 | $2.0B |
| T. Rowe Price Associates Inc. | 0.17% | Add +7.5% | 1,691,394 | $1.5B |
| Geode Capital Management, LLC | 0.08% | Add +3.3% | 1,382,280 | $1.2B |
| Franklin Resources Inc. | 0.24% | Reduce -0.3% | 1,049,409 | $951.1M |
| Norges Bank | 0.07% | — | 726,705 | $658.7M |
| T. Rowe Price Investment Management, Inc. | 0.41% | Reduce -3.5% | 724,494 | $656.7M |
| First Trust Advisors LP | 0.46% | Add +56.6% | 701,454 | $635.8M |
| Morgan Stanley | 0.04% | Add +16.2% | 649,070 | $588.3M |
| Barclays PLC | 0.22% | Add +67.0% | 604,802 | $548.2M |
| Goldman Sachs Group Inc. | 0.08% | Add +36.7% | 593,742 | $538.1M |
| Massachusetts Financial Services Co. | 0.17% | Add +2.5% | 570,719 | $517.3M |
| Bank of America Corp. | 0.04% | Reduce -24.0% | 549,575 | $498.1M |
| JPMorgan Chase & Co. | 0.03% | Reduce -40.7% | 512,273 | $464.3M |
| Van Eck Associates Corp. | 0.38% | Reduce -31.4% | 502,312 | $455.3M |
| Brown Advisory Inc. | 0.63% | Reduce -31.4% | 500,755 | $453.9M |
| Northern Trust Corp. | 0.06% | Reduce -0.4% | 483,700 | $438.4M |
| UBS Group AG | 0.08% | Reduce -16.9% | 438,985 | $397.9M |
| Rafferty Asset Management, LLC | 1.24% | Add +4.5% | 396,464 | $359.3M |
| Wellington Management Group LLP | 0.06% | Reduce -15.1% | 384,770 | $348.7M |
| Charles Schwab Investment Management Inc. | 0.05% | Add +2.1% | 365,384 | $331.2M |
| Legal & General Group Plc | 0.07% | Reduce -0.5% | 356,639 | $323.2M |
| Voya Investment Management LLC | 0.35% | Reduce -5.5% | 339,732 | $307.9M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.06% | Add +0.9% | 318,797 | $288.9M |
| FIL Ltd | 0.21% | Reduce -36.4% | 316,089 | $286.5M |
| Bank of New York Mellon Corp | 0.05% | Reduce -3.0% | 295,119 | $267.5M |
| Kayne Anderson Rudnick Investment Management LLC | 0.72% | Reduce -17.3% | 294,043 | $266.5M |
| SG Americas Securities, LLC | 0.32% | Add +77483.1% | 262,231 | $237.7M |
| Vaughan Nelson Investment Management, L.P. | 2.28% | Reduce -5.5% | 257,644 | $233.5M |
| BNP Paribas Financial Markets | 0.14% | Add +46.2% | 247,127 | $224.0M |
| Citigroup Inc. | 0.15% | Add +37.8% | 245,479 | $222.5M |
| Raymond James Financial Inc. | 0.06% | Reduce -20.9% | 211,484 | $193.7M |
| American Century Companies Inc. | 0.09% | Reduce -5.3% | 203,564 | $184.5M |
| Healthcare of Ontario Pension Plan Trust Fund | 0.31% | Add +73.5% | 202,864 | $183.9M |
| HSBC Holdings PLC | 0.10% | Add +45.5% | 200,626 | $182.3M |
| Neuberger Berman Group LLC | 0.12% | Add +8.3% | 181,706 | $164.7M |
| Royal Bank of Canada | 0.03% | Reduce -14.5% | 176,580 | $160.0M |
| Deutsche Bank AG | 0.05% | Add +0.3% | 174,325 | $158.0M |
| Principal Financial Group Inc. | 0.08% | Reduce -1.4% | 167,265 | $151.6M |
| Sei Investments Co. | 0.15% | Reduce -16.5% | 166,693 | $151.1M |
| Nomura Asset Management International Inc. | 0.23% | — | 165,234 | $149.8M |
| Nuveen, LLC | 0.04% | Add +20.2% | 161,249 | $146.1M |
| Allspring Global Investments Holdings, LLC | 0.23% | Reduce -10.4% | 153,328 | $143.6M |
| Earnest Partners LLC | 0.61% | Reduce -23.9% | 156,643 | $142.0M |
| DekaBank Deutsche Girozentrale | 0.25% | No change | 190,443 | $141.8M |
| Artisan Partners Limited Partnership | 0.21% | Reduce -20.2% | 153,862 | $139.5M |
| Pictet Asset Management Holding SA | 0.13% | Reduce -3.0% | 153,003 | $138.7M |
| Dimensional Fund Advisors LP | 0.03% | Reduce -3.5% | 151,038 | $136.9M |
| Allianz Asset Management GmbH | 0.15% | Add +81.4% | 145,633 | $132.0M |
| TimesSquare Capital Management, LLC | 1.92% | Reduce -0.5% | 140,279 | $127.1M |
| Caisse de depot et placement du Quebec | 0.21% | Add +105.6% | 137,217 | $124.4M |
| Alliancebernstein L.P. | 0.04% | Reduce -52.0% | 134,631 | $122.0M |
| Ameriprise Financial Inc. | 0.03% | Reduce -16.6% | 133,637 | $121.1M |
| Swiss National Bank | 0.07% | Reduce -5.0% | 131,260 | $119.0M |
| Amundi | 0.04% | Reduce -5.9% | 129,471 | $117.4M |
| Natixis Advisors, LLC | 0.16% | Reduce -2.4% | 128,155 | $116.2M |
| DF Dent & Co. Inc. | 1.66% | Reduce -15.0% | 127,277 | $115.4M |
| National Bank of Canada | 0.12% | Add +419.1% | 125,474 | $113.7M |
| Envestnet Asset Management Inc. | 0.03% | Reduce -22.0% | 124,634 | $113.0M |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.08% | Add +5.7% | 118,703 | $111.1M |
| Sumitomo Mitsui Trust Group, Inc. | 0.06% | Add +5.8% | 119,015 | $107.9M |
| Nomura Asset Management Co. Ltd. | 0.27% | Reduce -4.4% | 117,019 | $106.1M |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0.12% | Add +1816.9% | 115,721 | $104.9M |
| Victory Capital Management Inc. | 0.06% | Add +30.3% | 114,968 | $104.2M |
| Thrivent Financial for Lutherans | 0.18% | Add +631.3% | 111,749 | $101.3M |
| Impax Asset Management Group plc | 0.60% | Reduce -19.1% | 106,238 | $96.3M |
| Rhumbline Advisers | 0.08% | Reduce -3.0% | 104,246 | $94.5M |
| ProShare Advisors LLC | 0.16% | Add +291.9% | 99,461 | $90.1M |
| Baird Financial Group, Inc. | 0.14% | Reduce -9.9% | 97,610 | $88.5M |
| Robeco Schweiz AG | 1.93% | Reduce -8.0% | 95,018 | $86.1M |
| Candriam S.C.A. | 0.43% | Add +9.9% | 94,447 | $85.6M |
| Congress Asset Management Co. | 0.58% | Reduce -16.2% | 90,686 | $82.2M |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.18% | Add +37.7% | 90,070 | $81.6M |
| Mirae Asset Global Investments Co., Ltd. | 0.22% | Add +48.5% | 86,636 | $78.5M |
| California Public Employees Retirement System | 0.04% | Reduce -0.5% | 84,836 | $76.9M |
| Frontier Capital Management Co. LLC | 0.81% | Reduce -48.7% | 84,118 | $76.2M |
| Ensign Peak Advisors, Inc | 0.13% | Reduce -49.9% | 81,857 | $74.2M |
| Zevenbergen Capital Investments LLC | 1.64% | Add +9.0% | 81,378 | $73.8M |
| Stifel Financial Corp. | 0.07% | Reduce -18.7% | 80,712 | $73.2M |
| Adage Capital Partners Gp, L.L.C. | 0.11% | Reduce -6.4% | 77,852 | $70.6M |
| STRS Ohio | 0.26% | Add +0.0% | 77,809 | $70.5M |
| EULAV Asset Management | 1.88% | Reduce -28.3% | 77,682 | $70.4M |
| Wells Fargo & Company | 0.01% | Add +7.9% | 77,569 | $70.3M |
| MUFG Securities EMEA plc | 0.79% | Add +8075.1% | 74,966 | $67.9M |
| National Pension Service | 0.05% | Reduce -5.7% | 74,527 | $67.5M |
| TD Asset Management Inc | 0.05% | Reduce -0.4% | 74,300 | $67.3M |
| California State Teachers Retirement System | 0.07% | Reduce -0.9% | 74,069 | $67.1M |
| Grandeur Peak Global Advisors, LLC | 8.84% | Add +11.2% | 72,468 | $65.7M |
| Analog Century Management LP | 3.15% | Reduce -8.8% | 70,723 | $64.1M |
| Canada Pension Plan Investment Board | 0.04% | Add +207.8% | 69,732 | $63.2M |
| Eventide Asset Management, LLC | 0.97% | Add +65.8% | 68,373 | $62.0M |
| Resona Asset Management Co.,Ltd. | 0.29% | Reduce -6.1% | 66,386 | $60.6M |
| Vest Financial, LLC | 0.77% | Add +35.2% | 66,613 | $60.4M |
| Baron Capital (BAMCO) | 0.16% | Add +35.3% | 65,227 | $59.1M |
| LPL Financial LLC | 0.02% | Add +10.3% | 64,085 | $58.1M |
| Jennison Associates LLC | 0.03% | Add +14.6% | 61,828 | $56.0M |
| Quantinno Capital Management LP | 0.11% | Add +9.1% | 59,564 | $54.0M |
"% of holder's portfolio" is MPWR's weight in each manager's 13F, not the share of Monolithic Power Systems Inc. the manager owns.