MONOLITHIC POWER SYSTEMS INC (MPWR) Institutional Shareholders
MONOLITHIC POWER SYSTEMS INC (MPWR) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $61.89B in MPWR holdings during the latest filing period.
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 $7.84B, representing an estimated gain of +1.42% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 55% 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
1,229
Total Reported Value
$61.89B
Largest Holder
Blackrock, Inc.
Largest Position
$7.73B
Insider Transactions (90d)
44
Latest Filing Quarter
Q2 2026
New Institutional Positions
85
Funds Exiting Positions
0
| 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 | $7,837,130,749 | +$109,842,020 | +1.42% | |
| Fmr Llc | 0.31% | 5,177,258 | $7,156,835,733 | $7,258,567,489 | +$101,731,756 | +1.42% | |
| Vanguard Capital Management Llc | 0.09% | 3,126,756 | $4,322,302,424 | $4,383,743,180 | +$61,440,756 | +1.42% | |
| Vanguard Portfolio Management Llc | 0.16% | 2,504,858 | $3,462,615,505 | $3,511,835,965 | +$49,220,460 | +1.42% | |
| Invesco Ltd. | 0.26% | 2,343,930 | $3,240,155,614 | $3,286,213,299 | +$46,057,685 | +1.42% | |
| State Street Corp | 0.09% | 2,282,186 | $3,159,218,647 | $3,199,647,594 | +$40,428,947 | +1.28% | |
| Geode Capital Management, Llc | 0.09% | 1,195,281 | $1,646,916,316 | $1,675,795,915 | +$28,879,599 | +1.75% | |
| Goldman Sachs Group Inc | 0.11% | 780,650 | $1,079,139,564 | $1,094,479,107 | +$15,339,543 | +1.42% | |
| Norges Bank | 0.10% | 751,399 | $1,038,703,922 | $1,053,468,912 | +$14,764,990 | +1.42% | |
| Van Eck Associates Corp | 0.63% | 746,237 | $1,031,568,179 | $1,046,231,736 | +$14,663,557 | +1.42% | |
| Morgan Stanley | 0.05% | 727,871 | $1,006,183,580 | $1,020,482,421 | +$14,298,841 | +1.42% | |
| Bank Of America Corp | 0.05% | 536,236 | $741,270,823 | $751,808,234 | +$10,537,411 | +1.42% | |
| Royal Bank Of Canada | 0.11% | 487,212 | $673,502,000 | $683,076,096 | +$9,574,096 | +1.42% | |
| First Trust Advisors Lp | 0.39% | 482,781 | $667,377,220 | $676,863,790 | +$9,486,570 | +1.42% | |
| Northern Trust Corp | 0.08% | 479,492 | $662,830,561 | $672,252,579 | +$9,422,018 | +1.42% | |
| Barclays Plc | 0.21% | 474,132 | $655,421,109 | $664,737,805 | +$9,316,696 | +1.42% | |
| Rafferty Asset Management, Llc | 1.45% | 459,278 | $634,887,536 | $643,912,349 | +$9,024,813 | +1.42% | |
| Ubs Group Ag | 0.10% | 449,479 | $621,341,790 | $630,174,053 | +$8,832,263 | +1.42% | |
| Massachusetts Financial Services Co | 0.19% | 442,176 | $611,191,983 | $619,935,174 | +$8,743,191 | +1.43% | |
| Jpmorgan Chase & Co | 0.03% | 434,949 | $570,990,784 | $609,802,847 | +$38,812,063 | +6.80% | |
| Charles Schwab Investment Management Inc | 0.07% | 388,951 | $537,670,305 | $545,313,192 | +$7,642,887 | +1.42% | |
| Sixth Street Partners Management Company, L.P. | 0.07% | 388,951 | $537,670,305 | $545,313,192 | +$7,642,887 | +1.42% | |
| Legal & General Group Plc | 0.10% | 359,936 | $497,561,126 | $504,633,871 | +$7,072,745 | +1.42% | |
| Voya Investment Management Llc | 0.41% | 340,269 | $469,692,909 | $477,060,541 | +$7,367,632 | +1.57% | |
| Citigroup Inc | 0.21% | 325,281 | $449,655,077 | $456,047,215 | +$6,392,138 | +1.42% | |
| Bank Of New York Mellon Corp | 0.07% | 291,107 | $402,414,158 | $408,134,925 | +$5,720,767 | +1.42% | |
| Vanguard Fiduciary Trust Co | 0.09% | 279,965 | $387,012,417 | $392,513,730 | +$5,501,313 | +1.42% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.07% | 302,205 | $330,415,835 | $423,694,432 | +$93,278,597 | +28.23% | |
| Fil Ltd | 0.22% | 224,582 | $310,453,173 | $314,866,210 | +$4,413,037 | +1.42% | |
| California Public Employees Retirement System | 0.17% | 223,899 | $309,509,022 | $313,908,637 | +$4,399,615 | +1.42% | |
| Bnp Paribas Financial Markets | 0.15% | 207,881 | $287,366,379 | $291,451,241 | +$4,084,862 | +1.42% | |
| Kayne Anderson Rudnick Investment Management Llc | 0.89% | 206,130 | $284,946,808 | $288,996,321 | +$4,049,513 | +1.42% | |
| Two Sigma Investments, Lp | 0.20% | 190,505 | $263,346,492 | $267,089,915 | +$3,743,423 | +1.42% | |
| Hsbc Holdings Plc | 0.13% | 190,811 | $262,388,589 | $267,518,930 | +$5,130,341 | +1.96% | |
| Jennison Associates Llc | 0.15% | 185,502 | $256,430,394 | $260,075,659 | +$3,645,265 | +1.42% | |
| Brown Advisory Inc | 0.39% | 180,434 | $249,450,930 | $252,970,272 | +$3,519,342 | +1.41% | |
| Principal Financial Group Inc | 0.12% | 180,241 | $249,159,913 | $252,699,684 | +$3,539,771 | +1.42% | |
| Jane Street Group, Llc | 0.16% | 179,293 | $247,847,471 | $251,370,579 | +$3,523,108 | +1.42% | |
| Deutsche Bank Ag\ | 0.07% | 167,290 | $231,255,005 | $234,542,253 | +$3,287,248 | +1.42% | |
| Neuberger Berman Group Llc | 0.14% | 156,360 | $216,146,152 | $219,218,284 | +$3,072,132 | +1.42% | |
| Dimensional Fund Advisors Lp | 0.04% | 154,447 | $213,445,350 | $216,536,238 | +$3,090,888 | +1.45% | |
| Canada Pension Plan Investment Board | 0.11% | 148,792 | $205,684,109 | $208,607,872 | +$2,923,763 | +1.42% | |
| Earnest Partners Llc | 0.74% | 148,707 | $205,566,609 | $208,488,701 | +$2,922,092 | +1.42% | |
| Sei Investments Co | 0.18% | 147,966 | $204,537,827 | $207,449,812 | +$2,911,985 | +1.42% | |
| American Century Companies Inc | 0.09% | 147,212 | $203,508,580 | $206,392,696 | +$2,884,116 | +1.42% | |
| Amundi | 0.05% | 145,747 | $201,439,618 | $204,338,751 | +$2,899,133 | +1.44% | |
| Raymond James Financial Inc | 0.05% | 145,618 | $201,296,107 | $204,157,892 | +$2,861,785 | +1.42% | |
| Vaughan Nelson Investment Management, L.P. | 1.77% | 144,974 | $200,406,257 | $203,254,998 | +$2,848,741 | +1.42% | |
| Federated Hermes, Inc. | 0.29% | 144,949 | $200,371,699 | $203,219,947 | +$2,848,248 | +1.42% | |
| Alliancebernstein L.P. | 0.06% | 177,107 | $193,639,938 | $248,305,785 | +$54,665,847 | +28.23% |
Frequently asked questions about MPWR
Who owns the most MPWR stock?
The largest holders of MPWR are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for MONOLITHIC POWER SYSTEMS INC (MPWR).
Is MPWR widely held by superinvestors?
Many widely followed stocks like MPWR appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly MPWR is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.