MACOM TECHNOLOGY SOLUTIONS H (MTSI) Institutional Shareholders
MACOM TECHNOLOGY SOLUTIONS H (MTSI) 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 $14.85B in MTSI holdings during the latest filing period.
Fmr Llc is currently the largest disclosed institutional shareholder of MTSI tracked by InsiderSet, reporting ownership valued at approximately $2.36B in its March 31, 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 $2.90B, representing an estimated gain of +23.07% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 56% of the total disclosed MTSI value among the investors covered in this analysis. Major shareholders include Fmr Llc, Blackrock, Inc., Invesco Ltd., and several other long-term asset managers with concentrated positions in MACOM TECHNOLOGY SOLUTIONS H (MTSI).
This page ranks the largest institutional MTSI 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
552
Total Reported Value
$14.85B
Largest Holder
Fmr Llc
Largest Position
$2.36B
Insider Transactions (90d)
42
Latest Filing Quarter
Q2 2026
New Institutional Positions
80
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Fmr Llc | 0.12% | 10,610,440 | $2,356,260,403 | $2,899,939,356 | +$543,678,953 | +23.07% | |
| Blackrock, Inc. | 0.03% | 8,566,283 | $1,902,314,542 | $2,341,250,807 | +$438,936,265 | +23.07% | |
| Invesco Ltd. | 0.12% | 3,673,815 | $815,844,041 | $1,004,090,378 | +$188,246,337 | +23.07% | |
| Vanguard Portfolio Management Llc | 0.04% | 3,587,081 | $796,583,078 | $980,385,108 | +$183,802,030 | +23.07% | |
| Vanguard Capital Management Llc | 0.02% | 2,992,851 | $664,622,422 | $817,976,107 | +$153,353,685 | +23.07% | |
| State Street Corp | 0.02% | 2,152,751 | $478,061,415 | $588,368,376 | +$110,306,961 | +23.07% | |
| Massachusetts Financial Services Co | 0.14% | 1,166,242 | $443,584,418 | $318,745,601 | -$124,838,817 | -28.14% | |
| Wellington Management Group Llp | 0.06% | 1,548,035 | $343,772,131 | $423,093,446 | +$79,321,315 | +23.07% | |
| Geode Capital Management, Llc | 0.02% | 1,359,534 | $301,976,305 | $371,574,238 | +$69,597,933 | +23.05% | |
| Capital Research Global Investors | 0.04% | 1,222,672 | $271,518,771 | $334,168,484 | +$62,649,713 | +23.07% | |
| Whale Rock Capital Management Llc | 3.37% | 1,174,991 | $260,930,251 | $321,136,790 | +$60,206,539 | +23.07% | |
| Artisan Partners Limited Partnership | 0.38% | 1,047,159 | $232,542,690 | $286,199,026 | +$53,656,336 | +23.07% | |
| Polar Capital Holdings Plc | 0.90% | 930,778 | $206,697,870 | $254,390,935 | +$47,693,065 | +23.07% | |
| Ubs Group Ag | 0.03% | 809,410 | $179,745,678 | $221,219,847 | +$41,474,169 | +23.07% | |
| Neuberger Berman Group Llc | 0.13% | 788,819 | $174,959,224 | $215,592,121 | +$40,632,897 | +23.22% | |
| Janus Henderson Group Plc | 0.09% | 784,118 | $174,109,136 | $214,307,291 | +$40,198,155 | +23.09% | |
| Barclays Plc | 0.06% | 734,568 | $163,125,516 | $200,764,780 | +$37,639,264 | +23.07% | |
| Citigroup Inc | 0.07% | 410,179 | $156,019,786 | $112,106,022 | -$43,913,764 | -28.15% | |
| Charles Schwab Investment Management Inc | 0.02% | 660,860 | $146,757,180 | $180,619,647 | +$33,862,467 | +23.07% | |
| Nomura Asset Management International Inc. | 0.24% | 635,061 | $141,028,000 | $173,568,522 | +$32,540,522 | +23.07% | |
| Alliancebernstein L.P. | 0.04% | 789,042 | $135,147,114 | $215,653,069 | +$80,505,955 | +59.57% | |
| Citadel Advisors Llc | 0.09% | 590,570 | $131,147,880 | $161,408,687 | +$30,260,807 | +23.07% | |
| Raymond James Financial Inc | 0.04% | 590,338 | $127,024,649 | $161,345,279 | +$34,320,630 | +27.02% | |
| Morgan Stanley | 0.01% | 555,156 | $123,283,715 | $151,729,686 | +$28,445,971 | +23.07% | |
| Stephens Investment Management Group Llc | 1.29% | 316,408 | $120,352,111 | $86,477,470 | -$33,874,641 | -28.15% | |
| Northern Trust Corp | 0.02% | 532,682 | $118,292,693 | $145,587,317 | +$27,294,624 | +23.07% | |
| Dimensional Fund Advisors Lp | 0.02% | 529,138 | $117,466,184 | $144,618,707 | +$27,152,523 | +23.12% | |
| Franklin Resources Inc | 0.03% | 501,969 | $111,472,255 | $137,193,147 | +$25,720,892 | +23.07% | |
| Bank Of America Corp | 0.01% | 480,687 | $106,746,163 | $131,376,564 | +$24,630,401 | +23.07% | |
| Rafferty Asset Management, Llc | 0.42% | 467,587 | $103,837,045 | $127,796,203 | +$23,959,158 | +23.07% | |
| Jennison Associates Llc | 0.06% | 269,632 | $102,559,923 | $73,693,122 | -$28,866,801 | -28.15% | |
| Analog Century Management Lp | 4.63% | 436,346 | $96,899,356 | $119,257,725 | +$22,358,369 | +23.07% | |
| Goldman Sachs Group Inc | 0.01% | 430,800 | $95,667,798 | $117,741,948 | +$22,074,150 | +23.07% | |
| Vanguard Fiduciary Trust Co | 0.02% | 405,532 | $90,056,491 | $110,835,951 | +$20,779,460 | +23.07% | |
| Bank Of New York Mellon Corp | 0.02% | 400,926 | $89,033,748 | $109,577,085 | +$20,543,337 | +23.07% | |
| Geneva Capital Management Llc | 1.62% | 343,759 | $76,338,602 | $93,952,772 | +$17,614,170 | +23.07% | |
| American Century Companies Inc | 0.04% | 343,287 | $76,234,022 | $93,823,770 | +$17,589,748 | +23.07% | |
| Timessquare Capital Management, Llc | 1.29% | 341,231 | $75,777,168 | $93,261,845 | +$17,484,677 | +23.07% | |
| Driehaus Capital Management Llc | 0.55% | 336,813 | $74,796,063 | $92,054,361 | +$17,258,298 | +23.07% | |
| Millennium Management Llc | 0.06% | 335,214 | $74,440,973 | $91,617,338 | +$17,176,365 | +23.07% | |
| Loomis Sayles & Co L P | 0.10% | 322,459 | $71,608,470 | $88,131,269 | +$16,522,799 | +23.07% | |
| Manufacturers Life Insurance Company, The | 0.06% | 305,954 | $67,943,205 | $83,620,288 | +$15,677,083 | +23.07% | |
| Td Asset Management Inc | 0.06% | 177,214 | $67,406,889 | $48,434,358 | -$18,972,531 | -28.15% | |
| Principal Financial Group Inc | 0.03% | 171,614 | $65,276,815 | $46,903,822 | -$18,372,993 | -28.15% | |
| Schroder Investment Management Group | 0.04% | 250,048 | $52,382,556 | $68,340,619 | +$15,958,063 | +30.46% | |
| Assenagon Asset Management S.A. | 0.07% | 137,233 | $52,199,316 | $37,507,151 | -$14,692,165 | -28.15% | |
| First Trust Advisors Lp | 0.04% | 228,400 | $50,720,601 | $62,424,004 | +$11,703,403 | +23.07% | |
| Fiera Capital Corp | 0.17% | 224,740 | $49,908,012 | $61,423,689 | +$11,515,677 | +23.07% | |
| Sei Investments Co | 0.04% | 219,363 | $48,713,689 | $59,954,102 | +$11,240,413 | +23.07% | |
| Oberweis Asset Management Inc/ | 1.42% | 215,886 | $47,941,804 | $59,003,803 | +$11,061,999 | +23.07% |
Frequently asked questions about MTSI
Who owns the most MTSI stock?
The largest holders of MTSI 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 MACOM TECHNOLOGY SOLUTIONS H (MTSI).
Is MTSI widely held by superinvestors?
Many widely followed stocks like MTSI appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly MTSI 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.