MPWR Institutional Ownership & Shareholders
MONOLITHIC POWER SYSTEMS INC (MPWR) is currently held by 1,234 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $63.71B based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of MPWR tracked by InsiderSet, reporting ownership valued at approximately $7.73B in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $6.77B, representing an estimated loss of -12.35% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 54% of the total disclosed MPWR value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Fmr Llc, Vanguard Capital Management Llc, and several other long-term asset managers with concentrated positions in MONOLITHIC POWER SYSTEMS INC (MPWR).
This page ranks the largest institutional MPWR shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
1,234
Total Reported Value
$63.71B
Largest Holder
Blackrock, Inc.
Largest Position
$7.73B
Insider Transactions (90d)
17
Latest Filing Quarter
Q2 2026
New Institutional Positions
40
Funds Exiting Positions
1
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.12% | 5,589,925 | $7,727,288,729 | $6,772,920,828 | -$954,367,901 | -12.35% | |
| Fmr Llc | 0.31% | 5,177,258 | $7,156,835,733 | $6,272,921,111 | -$883,914,622 | -12.35% | |
| Vanguard Capital Management Llc | 0.09% | 3,126,756 | $4,322,302,424 | $3,788,471,372 | -$533,831,052 | -12.35% | |
| Vanguard Portfolio Management Llc | 0.16% | 2,504,858 | $3,462,615,505 | $3,034,961,099 | -$427,654,406 | -12.35% | |
| Invesco Ltd. | 0.26% | 2,343,930 | $3,240,155,614 | $2,839,975,906 | -$400,179,708 | -12.35% | |
| State Street Corp | 0.09% | 2,282,186 | $3,159,218,647 | $2,765,165,023 | -$394,053,624 | -12.47% | |
| Geode Capital Management, Llc | 0.09% | 1,195,281 | $1,646,916,316 | $1,448,238,318 | -$198,677,998 | -12.06% | |
| Price T Rowe Associates Inc | 0.14% | 976,798 | $1,350,287,000 | $1,183,517,761 | -$166,769,239 | -12.35% | |
| Goldman Sachs Group Inc | 0.11% | 780,650 | $1,079,139,564 | $945,858,960 | -$133,280,604 | -12.35% | |
| Norges Bank | 0.10% | 751,399 | $1,038,703,922 | $910,417,570 | -$128,286,352 | -12.35% | |
| Van Eck Associates Corp | 0.63% | 746,237 | $1,031,568,179 | $904,163,136 | -$127,405,043 | -12.35% | |
| Morgan Stanley | 0.05% | 727,871 | $1,006,183,580 | $881,910,340 | -$124,273,240 | -12.35% | |
| Bank Of America Corp | 0.05% | 536,236 | $741,270,823 | $649,719,625 | -$91,551,198 | -12.35% | |
| Royal Bank Of Canada | 0.11% | 487,212 | $673,502,000 | $590,320,676 | -$83,181,324 | -12.35% | |
| First Trust Advisors Lp | 0.39% | 482,781 | $667,377,220 | $584,951,943 | -$82,425,277 | -12.35% | |
| Northern Trust Corp | 0.08% | 479,492 | $662,830,561 | $580,966,892 | -$81,863,669 | -12.35% | |
| Barclays Plc | 0.21% | 474,132 | $655,421,109 | $574,472,555 | -$80,948,554 | -12.35% | |
| Rafferty Asset Management, Llc | 1.45% | 459,278 | $634,887,536 | $556,475,003 | -$78,412,533 | -12.35% | |
| Ubs Group Ag | 0.10% | 449,479 | $621,341,790 | $544,602,241 | -$76,739,549 | -12.35% | |
| Massachusetts Financial Services Co | 0.19% | 442,176 | $611,191,983 | $535,753,707 | -$75,438,276 | -12.34% | |
| Jpmorgan Chase & Co | 0.03% | 434,949 | $570,990,784 | $526,997,257 | -$43,993,527 | -7.70% | |
| Charles Schwab Investment Management Inc | 0.07% | 388,951 | $537,670,305 | $471,264,700 | -$66,405,605 | -12.35% | |
| Legal & General Group Plc | 0.10% | 359,936 | $497,561,126 | $436,109,256 | -$61,451,870 | -12.35% | |
| Voya Investment Management Llc | 0.41% | 340,269 | $469,692,909 | $412,280,128 | -$57,412,781 | -12.22% | |
| Citigroup Inc | 0.21% | 325,281 | $449,655,077 | $394,120,218 | -$55,534,859 | -12.35% | |
| Bank Of New York Mellon Corp | 0.07% | 291,107 | $402,414,158 | $352,713,974 | -$49,700,184 | -12.35% | |
| Vanguard Fiduciary Trust Co | 0.09% | 279,965 | $387,012,417 | $339,213,993 | -$47,798,424 | -12.35% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.07% | 302,205 | $330,415,835 | $366,160,644 | +$35,744,809 | +10.82% | |
| Fil Ltd | 0.22% | 224,582 | $310,453,173 | $272,110,289 | -$38,342,884 | -12.35% | |
| California Public Employees Retirement System | 0.17% | 223,899 | $309,509,022 | $271,282,745 | -$38,226,277 | -12.35% | |
| Bnp Paribas Financial Markets | 0.15% | 207,881 | $287,366,379 | $251,874,856 | -$35,491,523 | -12.35% | |
| Kayne Anderson Rudnick Investment Management Llc | 0.89% | 206,130 | $284,946,808 | $249,753,292 | -$35,193,516 | -12.35% | |
| Two Sigma Investments, Lp | 0.20% | 190,505 | $263,346,492 | $230,821,573 | -$32,524,919 | -12.35% | |
| Hsbc Holdings Plc | 0.13% | 190,811 | $262,388,589 | $231,192,332 | -$31,196,257 | -11.89% | |
| Jennison Associates Llc | 0.15% | 185,502 | $256,430,394 | $224,759,788 | -$31,670,606 | -12.35% | |
| Brown Advisory Inc | 0.39% | 180,434 | $249,450,930 | $218,619,247 | -$30,831,683 | -12.36% | |
| Jane Street Group, Llc | 0.16% | 179,293 | $247,847,471 | $217,236,778 | -$30,610,693 | -12.35% | |
| Deutsche Bank Ag\ | 0.07% | 167,290 | $231,255,005 | $202,693,583 | -$28,561,422 | -12.35% | |
| Sg Americas Securities, Llc | 0.13% | 162,475 | $224,599,000 | $196,859,584 | -$27,739,416 | -12.35% | |
| Principal Financial Group Inc | 0.11% | 165,424 | $222,865,333 | $200,432,681 | -$22,432,652 | -10.07% | |
| Dimensional Fund Advisors Lp | 0.04% | 154,447 | $213,445,350 | $187,132,619 | -$26,312,731 | -12.33% | |
| Canada Pension Plan Investment Board | 0.11% | 148,792 | $205,684,109 | $180,280,851 | -$25,403,258 | -12.35% | |
| Earnest Partners Llc | 0.74% | 148,707 | $205,566,609 | $180,177,862 | -$25,388,747 | -12.35% | |
| Sei Investments Co | 0.18% | 147,966 | $204,537,827 | $179,280,045 | -$25,257,782 | -12.35% | |
| American Century Companies Inc | 0.09% | 147,212 | $203,508,580 | $178,366,476 | -$25,142,104 | -12.35% | |
| Raymond James Financial Inc | 0.05% | 145,618 | $201,296,107 | $176,435,137 | -$24,860,970 | -12.35% | |
| Vaughan Nelson Investment Management, L.P. | 1.77% | 144,974 | $200,406,257 | $175,654,848 | -$24,751,409 | -12.35% | |
| Federated Hermes, Inc. | 0.29% | 144,949 | $200,371,699 | $175,624,557 | -$24,747,142 | -12.35% | |
| Alliancebernstein L.P. | 0.06% | 177,107 | $193,639,938 | $214,588,154 | +$20,948,216 | +10.82% | |
| Millennium Management Llc | 0.13% | 136,835 | $189,155,231 | $165,793,391 | -$23,361,840 | -12.35% |
Frequently asked questions about MPWR
Who are the largest institutional holders of MPWR?
The largest institutional holders of MPWR reported in the latest SEC Form 13F filings include Blackrock, Inc., Fmr Llc, Vanguard Capital Management Llc, Vanguard Portfolio Management Llc, and Invesco Ltd.. InsiderSet ranks institutional holders by their latest reported MPWR position.
What is MPWR institutional ownership?
This page tracks MPWR positions reported by institutional investment managers through SEC Form 13F. MONOLITHIC POWER SYSTEMS INC (MPWR) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own MPWR?
InsiderSet currently tracks 1,234 institutional managers reporting MPWR holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of MPWR shareholders.
How much MPWR stock do institutions own?
Institutional investment managers disclosed approximately $63.71B in MPWR holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was MPWR institutional ownership last updated?
The latest MPWR institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional MPWR holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its MPWR position after the reporting date.
Are institutions buying or selling MPWR?
Institutional buying and selling can be analyzed by comparing MPWR positions across consecutive 13F reporting periods. InsiderSet's MPWR Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View MPWR ownership changes.
How has MPWR institutional ownership changed over time?
InsiderSet tracks MPWR institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.