Monolithic Power SystemsMPWR
13F holders, Q2 2026 (June 30)1,246holders +124
205new positions
79sold out
12famous investors
$1378.09avg. 13F price*
At the end of Q2 2026, 1,246 institutions reported holding Monolithic Power Systems Inc. (MPWR) in their 13F filings, up 124 from Q1 2026. 205 opened new positions and 79 sold out. The largest holders were BlackRock, Inc. ($7.7B), FMR LLC ($7.2B) and Vanguard Capital Management LLC ($4.3B). 12 famous investors held it, including Daniel Sundheim (0.3% of D1 Capital Partners's portfolio), Israel Englander (0.1% of Millennium Management's portfolio) and Ron Baron (0.1% of Baron Capital (BAMCO)'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 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 205 | $1.1B |
| Exits | 79 | $1.2B |
All 13F filers, Q1 2026 → Q2 2026: 4,520,247 shares bought and 4,916,847 shares sold, net −396,600 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 1,246 holders
| BlackRock, Inc. | 0.12% | Reduce -8.0% | 5,589,925 | $7.7B |
| FMR LLC | 0.31% | Add +17.6% | 5,177,258 | $7.2B |
| Vanguard Capital Management LLC | 0.09% | Add +1.4% | 3,126,756 | $4.3B |
| Vanguard Portfolio Management LLC | 0.16% | Reduce -0.5% | 2,504,858 | $3.5B |
| Invesco Ltd. | 0.26% | Reduce -6.8% | 2,343,930 | $3.2B |
| State Street Corp. | 0.09% | Add +4.3% | 2,282,186 | $3.2B |
| Geode Capital Management, LLC | 0.09% | Reduce -16.5% | 1,195,281 | $1.6B |
| T. Rowe Price Associates Inc. | 0.14% | Reduce -22.7% | 976,798 | $1.4B |
| Franklin Resources Inc. | 0.25% | Reduce -12.6% | 811,974 | $1.1B |
| Goldman Sachs Group Inc. | 0.11% | Add +37.4% | 780,650 | $1.1B |
| Norges Bank | 0.10% | — | 751,399 | $1.0B |
| Van Eck Associates Corp. | 0.63% | Add +42.3% | 746,237 | $1.0B |
| Morgan Stanley | 0.05% | Add +10.9% | 727,885 | $1.0B |
| Bank of America Corp. | 0.05% | Add +40.3% | 536,236 | $741.3M |
| Royal Bank of Canada | 0.11% | Add +2.9% | 487,212 | $673.5M |
| First Trust Advisors LP | 0.39% | Reduce -18.4% | 482,781 | $667.4M |
| Northern Trust Corp. | 0.08% | Reduce -2.0% | 479,492 | $662.8M |
| Barclays PLC | 0.21% | Reduce -14.7% | 474,132 | $655.4M |
| Rafferty Asset Management, LLC | 1.45% | Add +44.7% | 459,278 | $634.9M |
| UBS Group AG | 0.10% | Reduce -16.8% | 449,479 | $621.3M |
| Massachusetts Financial Services Co. | 0.19% | Reduce -22.1% | 442,176 | $611.2M |
| JPMorgan Chase & Co. | 0.03% | Reduce -21.6% | 434,949 | $571.0M |
| Charles Schwab Investment Management Inc. | 0.07% | Add +3.3% | 388,951 | $537.7M |
| Legal & General Group Plc | 0.10% | Reduce -5.3% | 359,936 | $497.6M |
| Voya Investment Management LLC | 0.47% | Reduce -13.5% | 340,269 | $469.7M |
| Citigroup Inc. | 0.21% | Reduce -4.6% | 325,281 | $449.7M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.07% | Reduce -3.3% | 292,368 | $404.2M |
| Bank of New York Mellon Corp | 0.07% | Add +0.4% | 291,107 | $402.4M |
| Vanguard Fiduciary Trust Co. | 0.09% | Add +0.5% | 279,965 | $387.0M |
| FIL Ltd | 0.22% | Add +45.2% | 224,582 | $310.5M |
| California Public Employees Retirement System | 0.17% | Add +40.2% | 223,899 | $309.5M |
| BNP Paribas Financial Markets | 0.15% | Reduce -7.2% | 207,881 | $287.4M |
| Kayne Anderson Rudnick Investment Management LLC | 0.89% | Reduce -22.7% | 206,130 | $284.9M |
| Two Sigma Investments, LP | 0.21% | Add +1485.2% | 190,505 | $263.3M |
| HSBC Holdings PLC | 0.13% | Add +20.1% | 190,811 | $262.4M |
| Jennison Associates LLC | 0.15% | Add +275.6% | 185,502 | $256.4M |
| Brown Advisory Inc. | 0.39% | Reduce -52.5% | 180,434 | $249.5M |
| Principal Financial Group Inc. | 0.12% | Add +3.5% | 180,241 | $249.2M |
| Jane Street Group, LLC | 0.16% | Add +3427.3% | 179,293 | $247.8M |
| Deutsche Bank AG | 0.07% | Reduce -7.9% | 167,290 | $231.3M |
| SG Americas Securities, LLC | 0.13% | Reduce -10.6% | 162,475 | $224.6M |
| Neuberger Berman Group LLC | 0.14% | Add +4.2% | 156,360 | $216.1M |
| Dimensional Fund Advisors LP | 0.04% | Add +0.4% | 154,447 | $213.4M |
| Canada Pension Plan Investment Board | 0.11% | Add +178.9% | 148,792 | $205.7M |
| Earnest Partners LLC | 0.74% | Reduce -2.0% | 148,707 | $205.6M |
| Sei Investments Co. | 0.18% | Reduce -4.7% | 147,966 | $204.5M |
| American Century Companies Inc. | 0.09% | Reduce -26.3% | 147,212 | $203.5M |
| Amundi | 0.05% | Reduce -8.3% | 145,747 | $201.4M |
| Raymond James Financial Inc. | 0.05% | Reduce -25.7% | 145,618 | $201.3M |
| Vaughan Nelson Investment Management, L.P. | 1.77% | Add +4.0% | 144,974 | $200.4M |
| Federated Hermes, Inc. | 0.29% | Add +198.5% | 144,949 | $200.4M |
| Alliancebernstein L.P. | 0.06% | Add +42.1% | 177,107 | $193.6M |
| DekaBank Deutsche Girozentrale | 0.32% | No change | 190,443 | $190.2M |
| Millennium Management | 0.13% | New | 136,835 | $189.2M |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.10% | Add +0.4% | 132,064 | $182.6M |
| Swiss National Bank | 0.10% | Reduce -6.3% | 131,610 | $181.9M |
| Wells Fargo & Company | 0.03% | Add +29.1% | 131,302 | $181.5M |
| Artisan Partners Limited Partnership | 0.29% | Reduce -13.7% | 130,154 | $179.9M |
| Ameriprise Financial Inc. | 0.04% | Add +8.6% | 129,720 | $179.3M |
| Nuveen, LLC | 0.04% | Reduce -17.0% | 129,292 | $178.7M |
| Susquehanna International Group, LLP | 0.15% | Add +313.1% | 123,776 | $171.1M |
| Allianz Asset Management GmbH | 0.15% | Add +20.5% | 116,281 | $160.7M |
| TimesSquare Capital Management, LLC | 2.25% | Reduce -20.2% | 110,824 | $153.2M |
| Sumitomo Mitsui Trust Group, Inc. | 0.09% | Reduce -3.2% | 110,819 | $153.2M |
| Envestnet Asset Management Inc. | 0.04% | Reduce -13.7% | 108,573 | $150.1M |
| Vanguard Global Advisers, LLC | 0.07% | Reduce -0.5% | 106,109 | $146.7M |
| Natixis Advisors, LLC | 0.16% | Add +10.4% | 105,784 | $146.2M |
| Nomura Asset Management International Inc. | 0.22% | Reduce -30.0% | 103,548 | $143.1M |
| Pictet Asset Management Holding SA | 0.13% | Reduce -16.7% | 100,736 | $139.2M |
| Mirae Asset Global Investments Co., Ltd. | 0.26% | Add +17.2% | 97,618 | $134.9M |
| Adage Capital Partners Gp, L.L.C. | 0.19% | Add +30.8% | 96,352 | $133.2M |
| Robeco Schweiz AG | 2.13% | Add +1.1% | 96,033 | $132.8M |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0.13% | Reduce -26.9% | 95,039 | $131.4M |
| Victory Capital Management Inc. | 0.07% | Reduce -15.6% | 94,482 | $130.6M |
| Lord, Abbett & Co. LLC | 0.39% | Reduce -22.5% | 94,447 | $130.6M |
| Rhumbline Advisers | 0.10% | Reduce -7.6% | 94,367 | $130.4M |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.09% | Add +13.1% | 92,594 | $128.0M |
| Thrivent Financial for Lutherans | 0.21% | Reduce -6.3% | 90,064 | $124.5M |
| D1 Capital Partners | 0.34% | New | 85,103 | $117.6M |
| Baird Financial Group, Inc. | 0.16% | Add +10.3% | 81,895 | $113.2M |
| Allspring Global Investments Holdings, LLC | 0.17% | Reduce -29.0% | 84,341 | $112.3M |
| Congress Asset Management Co. | 0.68% | Reduce -3.5% | 80,425 | $111.2M |
| Zevenbergen Capital Investments LLC | 2.48% | Reduce -4.0% | 78,604 | $108.7M |
| Capitolis Liquid Global Markets LLC | 0.47% | Add +1686.2% | 78,432 | $108.4M |
| HRT Financial LP | 0.20% | New | 77,349 | $106.9M |
| Healthcare of Ontario Pension Plan Trust Fund | 0.15% | Reduce -43.8% | 76,360 | $105.6M |
| Liontrust Investment Partners LLP | 1.54% | Add +6.3% | 75,786 | $104.8M |
| Quantinno Capital Management LP | 0.13% | Add +4.0% | 75,694 | $104.6M |
| DF Dent & Co. Inc. | 1.91% | Reduce -17.6% | 72,954 | $100.8M |
| Wellington Management Group LLP | 0.02% | Reduce -71.3% | 72,001 | $99.5M |
| Ensign Peak Advisors, Inc | 0.16% | Reduce -8.9% | 71,154 | $98.4M |
| California State Teachers Retirement System | 0.09% | Reduce -4.1% | 69,420 | $96.0M |
| Stifel Financial Corp. | 0.08% | Reduce -15.4% | 67,103 | $92.8M |
| LPL Financial LLC | 0.02% | Reduce -3.9% | 65,267 | $90.2M |
| ProShare Advisors LLC | 0.13% | Reduce -20.7% | 64,600 | $89.3M |
| Qube Research & Technologies Ltd | 0.10% | New | 64,548 | $89.2M |
| National Pension Service | 0.06% | Reduce -6.2% | 63,529 | $87.8M |
| Citadel Advisors | 0.05% | Add +369.9% | 63,487 | $87.8M |
| Impax Asset Management Group plc | 0.57% | Reduce -28.3% | 63,427 | $87.7M |
| Renaissance Technologies | 0.12% | New | 63,066 | $87.2M |
"% of holder's portfolio" is MPWR's weight in each manager's 13F, not the share of Monolithic Power Systems Inc. the manager owns.