Monolithic Power SystemsMPWR
13F holders, Q1 2025 (March 31)862holders −2
111new positions
109sold out
9famous investors
$579.69avg. 13F price*
At the end of Q1 2025, 862 institutions reported holding Monolithic Power Systems Inc. (MPWR) in their 13F filings, down 2 from Q4 2024. 111 opened new positions and 109 sold out. The largest holders were Vanguard Group Inc. ($3.4B), BlackRock, Inc. ($2.8B) and FMR LLC ($2.0B). 9 famous investors held it, including Alex Sacerdote (0.5% of Whale Rock Capital Management's portfolio), Philippe Laffont (0.5% of Coatue Management's portfolio) and Israel Englander (0.1% of Millennium 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 Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 111 | $370.0M |
| Exits | 109 | $168.7M |
All 13F filers, Q4 2024 → Q1 2025: 4,067,975 shares bought and 3,870,883 shares sold, net +197,092 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 862 holders
| Vanguard Group Inc. | 0.06% | Add +1.7% | 5,920,669 | $3.4B |
| BlackRock, Inc. | 0.06% | Reduce -9.4% | 4,912,908 | $2.8B |
| FMR LLC | 0.13% | Add +12.2% | 3,498,709 | $2.0B |
| State Street Corp. | 0.05% | Reduce -2.0% | 2,115,705 | $1.2B |
| T. Rowe Price Associates Inc. | 0.15% | Add +33.1% | 2,034,731 | $1.2B |
| Geode Capital Management, LLC | 0.06% | Add +3.0% | 1,406,036 | $814.4M |
| Franklin Resources Inc. | 0.23% | Reduce -6.7% | 1,343,830 | $779.4M |
| Invesco Ltd. | 0.14% | Add +7.5% | 1,249,335 | $724.6M |
| Van Eck Associates Corp. | 0.79% | Add +34.8% | 1,046,258 | $606.8M |
| Brown Advisory Inc. | 0.77% | Reduce -5.3% | 933,625 | $541.5M |
| Wellington Management Group LLP | 0.09% | Reduce -10.7% | 761,906 | $441.9M |
| JPMorgan Chase & Co. | 0.03% | Add +26.6% | 629,566 | $365.1M |
| Norges Bank | 0.05% | Reduce -28.8% | 594,318 | $344.7M |
| Bank of America Corp. | 0.03% | Add +5.8% | 587,026 | $340.5M |
| Morgan Stanley | 0.02% | Add +17.7% | 540,631 | $313.6M |
| Northern Trust Corp. | 0.04% | Reduce -2.1% | 498,516 | $289.1M |
| Massachusetts Financial Services Co. | 0.09% | Reduce -6.3% | 457,551 | $265.4M |
| Rafferty Asset Management, LLC | 0.96% | Reduce -7.2% | 388,855 | $225.5M |
| Barclays PLC | 0.10% | Add +10.8% | 368,703 | $213.8M |
| Kayne Anderson Rudnick Investment Management LLC | 0.51% | Reduce -0.5% | 361,124 | $209.4M |
| UBS Group AG | 0.05% | Reduce -13.0% | 357,290 | $207.2M |
| Bank of New York Mellon Corp | 0.04% | Add +1.5% | 355,312 | $206.1M |
| Artisan Partners Limited Partnership | 0.32% | Reduce -4.7% | 341,854 | $198.3M |
| Legal & General Group Plc | 0.05% | Add +2.9% | 336,733 | $195.3M |
| Charles Schwab Investment Management Inc. | 0.04% | Add +3.1% | 335,986 | $194.9M |
| Alliancebernstein L.P. | 0.07% | Reduce -4.6% | 327,418 | $189.9M |
| Ensign Peak Advisors, Inc | 0.36% | Reduce -3.8% | 324,128 | $188.0M |
| T. Rowe Price Investment Management, Inc. | 0.12% | Add +70.8% | 314,449 | $182.4M |
| Goldman Sachs Group Inc. | 0.03% | Add +12.5% | 298,514 | $173.1M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.04% | Add +5.2% | 294,091 | $170.6M |
| Alyeska Investment Group, L.P. | 0.67% | Add +49.6% | 287,149 | $166.5M |
| BNP Paribas Financial Markets | 0.13% | Add +87.9% | 284,097 | $164.8M |
| Citigroup Inc. | 0.12% | Reduce -21.4% | 272,981 | $158.3M |
| Vaughan Nelson Investment Management, L.P. | 1.48% | Reduce -33.8% | 256,028 | $148.5M |
| Raymond James Financial Inc. | 0.05% | Add +3.2% | 245,661 | $142.5M |
| Macquarie Group Ltd. | 0.16% | Reduce -14.5% | 224,875 | $130.4M |
| Impax Asset Management Group plc | 0.72% | Reduce -12.3% | 208,618 | $120.1M |
| American Century Companies Inc. | 0.07% | Add +3.8% | 203,174 | $117.8M |
| Earnest Partners LLC | 0.56% | Add +0.1% | 203,119 | $117.8M |
| Sei Investments Co. | 0.15% | Add +1.0% | 200,444 | $116.3M |
| Coatue Management | 0.49% | New | 193,432 | $112.2M |
| DekaBank Deutsche Girozentrale | 0.22% | Reduce -0.2% | 190,045 | $111.7M |
| Allspring Global Investments Holdings, LLC | 0.18% | Reduce -11.4% | 183,157 | $106.5M |
| First Trust Advisors LP | 0.09% | Add +137.9% | 183,402 | $106.4M |
| Nuveen, LLC | 0.03% | — | 182,336 | $105.8M |
| Ameriprise Financial Inc. | 0.03% | Reduce -4.4% | 177,271 | $102.8M |
| Voya Investment Management LLC | 0.13% | Reduce -11.7% | 175,229 | $101.6M |
| Principal Financial Group Inc. | 0.06% | Add +0.1% | 174,642 | $101.3M |
| Pictet Asset Management Holding SA | 0.11% | Add +105.2% | 170,110 | $98.7M |
| Deutsche Bank AG | 0.04% | Add +6.4% | 169,196 | $98.1M |
| Envestnet Asset Management Inc. | 0.03% | Reduce -3.6% | 167,518 | $97.2M |
| Dimensional Fund Advisors LP | 0.02% | Add +0.6% | 160,549 | $93.1M |
| DF Dent & Co. Inc. | 1.24% | Add +2.9% | 159,988 | $92.8M |
| HSBC Holdings PLC | 0.06% | Reduce -9.1% | 158,822 | $91.7M |
| Worldquant Millennium Advisors LLC | 0.58% | Add +3256.7% | 157,395 | $91.3M |
| Holocene Advisors, LP | 0.26% | New | 149,569 | $86.7M |
| Millennium Management | 0.09% | Add +19.2% | 148,503 | $86.1M |
| Royal Bank of Canada | 0.02% | Reduce -37.1% | 146,255 | $84.8M |
| TimesSquare Capital Management, LLC | 1.36% | Add +6.3% | 145,302 | $84.3M |
| Swiss National Bank | 0.06% | Reduce -0.1% | 137,600 | $79.8M |
| Natixis Advisors, LLC | 0.14% | Reduce -11.7% | 132,238 | $76.7M |
| Rokos Capital Management LLP | 2.11% | Reduce -28.5% | 129,357 | $75.0M |
| Frontier Capital Management Co. LLC | 0.82% | Reduce -13.9% | 128,722 | $74.7M |
| Manufacturers Life Insurance Company, The | 0.07% | Reduce -15.4% | 123,431 | $71.6M |
| Congress Asset Management Co. | 0.53% | Reduce -6.2% | 122,660 | $71.1M |
| Rhumbline Advisers | 0.06% | Add +8.1% | 116,467 | $67.5M |
| EULAV Asset Management | 1.67% | Add +0.0% | 116,276 | $67.4M |
| Adage Capital Partners Gp, L.L.C. | 0.12% | Add +24.0% | 116,100 | $67.3M |
| Robeco Schweiz AG | 1.66% | Add +5.3% | 116,046 | $67.3M |
| STRS Ohio | 0.28% | No change | 114,000 | $66.1M |
| Sumitomo Mitsui Trust Group, Inc. | 0.05% | Add +0.3% | 112,680 | $65.4M |
| LPL Financial LLC | 0.03% | Add +3.1% | 112,122 | $65.0M |
| FIL Ltd | 0.06% | Add +18392.8% | 110,587 | $64.1M |
| Baird Financial Group, Inc. | 0.12% | Reduce -33.4% | 108,532 | $62.9M |
| Janus Henderson Group PLC | 0.03% | Add +1676.5% | 105,613 | $61.3M |
| Neuberger Berman Group LLC | 0.05% | Reduce -26.8% | 102,726 | $59.6M |
| Caisse de depot et placement du Quebec | 0.12% | Reduce -28.9% | 99,191 | $57.5M |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.05% | Add +26.3% | 99,173 | $57.5M |
| Amundi | 0.02% | Add +14.6% | 105,612 | $56.4M |
| California Public Employees Retirement System | 0.04% | Add +18.4% | 96,112 | $55.7M |
| Balyasny Asset Management L.P. | 0.14% | Reduce -24.8% | 95,000 | $55.1M |
| Panagora Asset Management Inc. | 0.27% | Add +37.0% | 94,479 | $54.8M |
| Victory Capital Management Inc. | 0.06% | Reduce -32.7% | 92,182 | $53.5M |
| Stifel Financial Corp. | 0.05% | Add +8.2% | 83,267 | $48.3M |
| Allianz Asset Management GmbH | 0.07% | Reduce -49.1% | 82,963 | $48.1M |
| Resona Asset Management Co.,Ltd. | 0.27% | Add +0.4% | 81,537 | $47.3M |
| Candriam S.C.A. | 0.28% | Add +50.9% | 76,651 | $44.5M |
| National Pension Service | 0.04% | Add +15.2% | 76,584 | $44.4M |
| Mirae Asset Global Investments Co., Ltd. | 0.18% | Add +9.1% | 74,774 | $43.4M |
| California State Teachers Retirement System | 0.05% | Reduce -1.1% | 74,094 | $43.0M |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.12% | Add +34.8% | 73,624 | $42.7M |
| Grandeur Peak Global Advisors, LLC | 4.65% | Add +16.3% | 72,264 | $41.9M |
| AQR Capital Management | 0.04% | Reduce -17.4% | 73,237 | $41.4M |
| AXA S.A. | 0.14% | Add +17.6% | 70,750 | $41.0M |
| Wells Fargo & Company | 0.01% | Reduce -0.9% | 68,714 | $39.9M |
| Susquehanna International Group, LLP | 0.06% | Add +25.4% | 64,842 | $37.6M |
| CANADA LIFE ASSURANCE Co | 0.06% | Reduce -9.3% | 62,556 | $36.3M |
| Corient Private Wealth LP | 0.06% | Reduce -14.3% | 58,034 | $33.7M |
| Canada Pension Plan Investment Board | 0.03% | Reduce -63.0% | 57,342 | $33.3M |
| Freestone Grove Partners LP | 0.34% | Add +112.9% | 56,961 | $33.0M |
"% of holder's portfolio" is MPWR's weight in each manager's 13F, not the share of Monolithic Power Systems Inc. the manager owns.