MONOLITHIC PWR SYS INC (MPWR)
Institutional ownership reported to the SEC as of Q2 2026, across 31 quarters.
1,189
Reporting holders
$64.9B
Reported value
93.7%
Of shares outstanding
2.3%
Held as options
+109
Holder change
Institutions report 46,071,216 shares against 49,143,000 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end. A figure this high can overstate: where an adviser and a sub-adviser both report the same shares, both are counted.
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $7.7B | 5,589,925 | 0.11% | 8q | -7.9%-$667.0M |
| FMR LLC | $7.2B | 5,177,258 | 0.31% | 31q | +17.6%+$1.1B |
| VANGUARD CAPITAL MANAGEMENT LLC | $4.3B | 3,126,756 | 0.09% | 2q | +1.4%+$59.9M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $3.5B | 2,504,858 | 0.16% | 2q | HELD |
| Invesco Ltd. | $3.2B | 2,343,930 | 0.26% | 31q | -6.8%-$237.8M |
| STATE STREET CORP | $3.2B | 2,282,186 | 0.09% | 31q | +4.3%+$129.8M |
| GEODE CAPITAL MANAGEMENT, LLC | $1.6B | 1,195,281 | 0.09% | 31q | -16.5%-$326.3M |
| FRANKLIN RESOURCES INC | $1.1B | 811,974 | 0.24% | 31q | -12.6%-$161.3M |
| GOLDMAN SACHS GROUP INC | $1.1B | 780,650 | 0.09% | 31q | +37.4%+$297.9M |
| NORGES BANK | $1.0B | 751,399 | 0.10% | 32q | +3.4%+$34.1M |
| VAN ECK ASSOCIATES CORP | $1.0B | 746,237 | 0.63% | 23q | +42.3%+$306.4M |
| MORGAN STANLEY | $1.0B | 727,885 | 0.05% | 35q | +10.9%+$98.9M |
| BANK OF AMERICA CORP /DE/ | $741.3M | 536,236 | 0.05% | 31q | +40.3%+$213.0M |
| ROYAL BANK OF CANADA | $673.5M | 487,212 | 0.10% | 31q | +2.9%+$19.1M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $673.3M | 123,776 | 0.05% | 31q | +313.1%+$510.3M |
| FIRST TRUST ADVISORS LP | $667.4M | 482,781 | 0.39% | 31q | -18.4%-$150.1M |
| NORTHERN TRUST CORP | $662.8M | 479,492 | 0.08% | 31q | -2.0%-$13.3M |
| BARCLAYS PLC | $655.4M | 474,132 | 0.13% | 31q | -14.7%-$112.9M |
| Rafferty Asset Management, LLC | $634.9M | 459,278 | 1.45% | 31q | +44.7%+$196.0M |
| UBS Group AG | $622.7M | 449,479 | 0.08% | 31q | -16.8%-$126.0M |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | $611.2M | 442,176 | 0.19% | 31q | -22.1%-$173.6M |
| JANE STREET GROUP, LLC | $582.5M | 179,293 | 0.05% | 30q | +3427.3%+$566.0M |
| JPMORGAN CHASE & CO | $571.0M | 434,949 | 0.03% | 31q | -21.6%-$157.5M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $537.7M | 388,951 | 0.07% | 31q | +3.3%+$17.4M |
| Sixth Street Partners Management Company, L.P. | $537.7M | 388,951 | 0.07% | new | NEW |
| Legal & General Group Plc | $497.6M | 359,936 | 0.10% | 31q | -5.3%-$27.9M |
| VOYA INVESTMENT MANAGEMENT LLC | $469.7M | 340,269 | 0.41% | 31q | -13.5%-$73.6M |
| CITIGROUP INC | $449.7M | 325,281 | 0.15% | 31q | -4.6%-$21.5M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $404.2M | 292,368 | 0.07% | 31q | -3.3%-$13.6M |
| Bank of New York Mellon Corp | $402.4M | 291,107 | 0.07% | 31q | HELD |
| VANGUARD FIDUCIARY TRUST CO | $387.0M | 279,965 | 0.09% | 2q | +0.5%+$2.0M |
| BNP PARIBAS FINANCIAL MARKETS | $310.6M | 207,881 | 0.11% | 31q | -7.2%-$24.1M |
| FIL Ltd | $310.5M | 224,582 | 0.22% | 8q | +45.2%+$96.7M |
| California Public Employees Retirement System | $309.5M | 223,899 | 0.17% | 31q | +40.2%+$88.8M |
| CITADEL ADVISORS LLC | $305.5M | 63,487 | 0.03% | 31q | +369.9%+$240.5M |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | $284.9M | 206,130 | 0.89% | 15q | -22.7%-$83.7M |
| TWO SIGMA INVESTMENTS, LP | $270.8M | 190,505 | 0.20% | 3q | +1485.2%+$253.7M |
| HSBC HOLDINGS PLC | $262.4M | 190,811 | 0.11% | 31q | +20.1%+$43.9M |
| JENNISON ASSOCIATES LLC | $256.4M | 185,502 | 0.15% | 14q | +275.6%+$188.2M |
| BROWN ADVISORY INC | $249.5M | 180,434 | 0.39% | 31q | -52.5%-$275.8M |
| PRINCIPAL FINANCIAL GROUP INC | $249.2M | 180,241 | 0.12% | 31q | +3.5%+$8.4M |
| MILLENNIUM MANAGEMENT LLC | $240.2M | 136,835 | 0.09% | 31q | HELD |
| DEUTSCHE BANK AG\ | $231.3M | 167,290 | 0.07% | 34q | -7.9%-$20.0M |
| NEUBERGER BERMAN GROUP LLC | $216.1M | 156,360 | 0.14% | 31q | +4.2%+$8.6M |
| DIMENSIONAL FUND ADVISORS LP | $213.4M | 154,447 | 0.04% | 31q | HELD |
| CANADA PENSION PLAN INVESTMENT BOARD | $205.7M | 148,792 | 0.11% | 11q | +178.9%+$131.9M |
| EARNEST PARTNERS LLC | $205.6M | 148,707 | 0.74% | 31q | -2.0%-$4.2M |
| SEI INVESTMENTS CO | $204.5M | 147,966 | 0.18% | 31q | -4.7%-$10.1M |
| AMERICAN CENTURY COMPANIES INC | $203.5M | 147,212 | 0.09% | 31q | -26.3%-$72.5M |
| Amundi | $201.4M | 145,747 | 0.05% | 21q | -8.3%-$18.2M |
| RAYMOND JAMES FINANCIAL INC | $201.3M | 145,618 | 0.05% | 7q | -25.7%-$69.7M |
| VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. | $200.4M | 144,974 | 1.77% | 20q | +4.0%+$7.8M |
| FEDERATED HERMES, INC. | $200.4M | 144,949 | 0.29% | 31q | +198.5%+$133.2M |
| ALLIANCEBERNSTEIN L.P. | $193.6M | 177,107 | 0.06% | 31q | +42.1%+$57.4M |
| Mitsubishi UFJ Asset Management Co., Ltd. | $182.6M | 132,064 | 0.10% | 23q | HELD |
| Swiss National Bank | $181.9M | 131,610 | 0.10% | 31q | -6.4%-$12.3M |
| WELLS FARGO & COMPANY/MN | $181.5M | 131,302 | 0.03% | 31q | -35.4%-$99.7M |
| Artisan Partners Limited Partnership | $179.9M | 130,154 | 0.29% | 31q | -13.7%-$28.6M |
| AMERIPRISE FINANCIAL INC | $179.3M | 129,720 | 0.04% | 31q | -45.7%-$150.9M |
| Nuveen, LLC | $178.7M | 129,292 | 0.04% | 6q | -17.0%-$36.7M |
| TimesSquare Capital Management, LLC | $153.2M | 110,824 | 2.25% | 31q | -20.2%-$38.7M |
| Sumitomo Mitsui Trust Group, Inc. | $153.2M | 110,819 | 0.09% | 23q | -3.2%-$5.0M |
| ENVESTNET ASSET MANAGEMENT INC | $150.1M | 108,573 | 0.04% | 31q | -13.7%-$23.9M |
| Vanguard Global Advisers, LLC | $146.7M | 106,109 | 0.07% | 2q | HELD |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | $143.1M | 103,548 | 0.21% | 3q | -30.0%-$61.4M |
| Pictet Asset Management Holding SA | $139.2M | 100,736 | 0.13% | 12q | -16.7%-$27.8M |
| Mirae Asset Global Investments Co., Ltd. | $134.9M | 97,618 | 0.20% | 23q | -41.4%-$95.3M |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | $133.2M | 96,352 | 0.19% | 22q | +30.8%+$31.4M |
| Robeco Schweiz AG | $132.8M | 96,033 | 2.13% | 31q | +1.1%+$1.4M |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | $131.4M | 95,039 | 0.13% | 15q | -26.9%-$48.3M |
| VICTORY CAPITAL MANAGEMENT INC | $130.6M | 94,482 | 0.07% | 31q | -15.6%-$24.2M |
| RHUMBLINE ADVISERS | $130.4M | 94,367 | 0.10% | 31q | -7.6%-$10.7M |
| VANGUARD ASSET MANAGEMENT, Ltd | $128.0M | 92,594 | 0.09% | 2q | +13.1%+$14.9M |
| Corient Private Wealth LP | $126.9M | 91,868 | 0.08% | 15q | +485.7%+$105.2M |
| IMC-Chicago, LLC | $126.4M | 9,733 | 0.03% | 10q | +210.9%+$85.7M |
| D1 Capital Partners L.P. | $117.6M | 85,103 | 0.34% | new | NEW |
| Baird Financial Group, Inc. | $113.2M | 81,895 | 0.16% | 31q | +10.3%+$10.5M |
| Allspring Global Investments Holdings, LLC | $112.3M | 84,341 | 0.17% | 19q | -29.0%-$45.9M |
| CONGRESS ASSET MANAGEMENT CO | $111.2M | 80,425 | 0.68% | 31q | -3.5%-$4.0M |
| ZEVENBERGEN CAPITAL INVESTMENTS LLC | $108.7M | 78,604 | 2.48% | 31q | -4.0%-$4.6M |
| CAPITOLIS LIQUID GLOBAL MARKETS LLC | $108.4M | 78,432 | 0.47% | 2q | +1686.2%+$102.4M |
| Allianz Asset Management GmbH | $106.0M | 96,512 | 0.09% | 40q | HELD |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | $105.6M | 76,360 | 0.15% | 12q | -43.8%-$82.4M |
| Liontrust Investment Partners LLP | $104.8M | 75,786 | 1.54% | 7q | +6.3%+$6.2M |
| Quantinno Capital Management LP | $104.6M | 75,694 | 0.13% | 15q | +4.0%+$4.0M |
| Tidal Investments LLC | $101.3M | 51,894 | 0.18% | 21q | +46.7%+$32.2M |
| DF DENT & CO INC | $100.8M | 72,954 | 1.91% | 16q | -17.6%-$21.6M |
| WELLINGTON MANAGEMENT GROUP LLP | $99.5M | 72,001 | 0.02% | 31q | -71.3%-$246.8M |
| Ensign Peak Advisors, Inc | $98.4M | 71,154 | 0.16% | 27q | -54.4%-$117.6M |
| STIFEL FINANCIAL CORP | $92.8M | 67,103 | 0.08% | 31q | -15.4%-$16.9M |
| Qube Research & Technologies Ltd | $91.4M | 64,548 | 0.08% | 17q | HELD |
| LPL Financial LLC | $90.2M | 65,267 | 0.02% | 31q | -3.9%-$3.7M |
| ProShare Advisors LLC | $89.3M | 64,600 | 0.13% | 31q | -20.7%-$23.3M |
| Squarepoint Ops LLC | $88.1M | 53,024 | 0.10% | 23q | +63.6%+$34.2M |
| National Pension Service | $87.8M | 63,529 | 0.06% | 23q | -6.2%-$5.8M |
| Impax Asset Management Group plc | $87.7M | 63,427 | 0.57% | 24q | -28.3%-$34.6M |
| RENAISSANCE TECHNOLOGIES LLC | $87.2M | 63,066 | 0.12% | new | NEW |
| CIBC Bancorp USA Inc. | $84.6M | 61,206 | 0.10% | 3q | -11.1%-$10.5M |
| Russell Investments Group, Ltd. | $84.2M | 61,251 | 0.07% | 31q | +13.3%+$9.9M |
| BAMCO INC /NY/ | $81.0M | 58,604 | 0.12% | 21q | -7.0%-$6.1M |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-07-15 | 13G | Invesco Ltd. | 5.2% |
| 2026-07-08 | 13G/A | FMR LLCwith 1 co-filers | 10.5% |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 1,189 | $64.9B | 46,071,216 | 196 | 389 | 411 | 2.3% |
| Q1 2026 | 1,080 | $48.8B | 44,045,158 | 165 | 350 | 381 | 1.5% |
| Q4 2025 | 1,008 | $41.5B | 44,869,620 | 132 | 344 | 321 | 2.0% |
| Q3 2025 | 919 | $41.1B | 43,947,182 | 151 | 309 | 285 | 2.0% |
| Q2 2025 | 850 | $31.8B | 42,756,515 | 124 | 330 | 269 | 1.8% |
| Q1 2025 | 800 | $25.1B | 42,409,712 | 110 | 291 | 273 | 2.0% |
| Q4 2024 | 807 | $26.2B | 42,740,249 | 87 | 284 | 261 | 3.5% |
| Q3 2024 | 816 | $41.2B | 44,045,030 | 108 | 285 | 282 | 1.2% |
| Q2 2024 | 769 | $37.2B | 44,540,479 | 108 | 287 | 229 | 1.5% |
| Q1 2024 | 729 | $30.3B | 43,647,268 | 114 | 253 | 230 | 2.4% |
| Q4 2023 | 661 | $27.9B | 42,842,976 | 94 | 229 | 194 | 3.2% |
| Q3 2023 | 573 | $20.1B | 42,103,045 | 58 | 211 | 203 | 3.0% |
| Q2 2023 | 559 | $23.3B | 42,545,488 | 58 | 191 | 208 | 1.4% |
| Q1 2023 | 565 | $21.0B | 42,411,839 | 105 | 189 | 176 | 0.9% |
| Q4 2022 | 484 | $13.3B | 37,518,680 | 59 | 170 | 172 | 0.6% |
| Q3 2022 | 632 | $16.8B | 45,737,926 | 75 | 241 | 222 | 0.9% |
| Q2 2022 | 623 | $17.0B | 43,748,020 | 72 | 242 | 216 | 1.3% |
| Q1 2022 | 611 | $21.6B | 44,035,198 | 74 | 245 | 196 | 1.0% |
| Q4 2021 | 622 | $21.7B | 43,746,788 | 75 | 223 | 200 | 0.8% |
| Q3 2021 | 577 | $21.3B | 43,473,110 | 78 | 166 | 214 | 1.0% |
| Q2 2021 | 539 | $16.3B | 43,129,761 | 60 | 193 | 179 | 1.0% |
| Q1 2021 | 528 | $15.3B | 42,771,115 | 75 | 198 | 192 | 1.0% |
| Q4 2020 | 508 | $15.7B | 42,553,583 | 98 | 164 | 160 | 0.7% |
| Q3 2020 | 439 | $11.9B | 42,463,392 | 67 | 146 | 163 | 0.4% |
| Q2 2020 | 403 | $10.2B | 42,937,911 | 79 | 138 | 133 | 0.4% |
| Q1 2020 | 351 | $7.3B | 43,405,561 | 41 | 123 | 126 | 0.3% |
| Q4 2019 | 356 | $7.6B | 42,489,918 | 41 | 134 | 114 | 0.2% |
| Q3 2019 | 352 | $6.6B | 42,503,702 | 40 | 118 | 121 | 0.4% |
| Q2 2019 | 347 | $5.8B | 42,614,150 | 43 | 124 | 124 | 0.9% |
| Q1 2019 | 349 | $5.7B | 41,784,853 | 45 | 136 | 121 | 0.6% |
| Q4 2018 | 338 | $5.0B | 43,008,000 | 3 | 7 | 6 | 0.7% |