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 $27.09B 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 $4.00B 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 $2.77B, representing an estimated loss of -30.82% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 54% of the total disclosed MTSI value among the investors covered in this analysis. Major shareholders include Fmr Llc, Blackrock, Inc., Vanguard Portfolio Management Llc, 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
633
Total Reported Value
$27.09B
Largest Holder
Fmr Llc
Largest Position
$4.00B
Insider Transactions (90d)
15
Latest Filing Quarter
Q2 2026
New Institutional Positions
108
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Fmr Llc | 0.17% | 10,527,144 | $4,004,209,656 | $2,770,112,672 | -$1,234,096,984 | -30.82% | |
| Blackrock, Inc. | 0.05% | 9,512,899 | $3,618,421,462 | $2,503,224,243 | -$1,115,197,219 | -30.82% | |
| Vanguard Portfolio Management Llc | 0.06% | 3,605,324 | $1,371,357,090 | $948,704,957 | -$422,652,133 | -30.82% | |
| Vanguard Capital Management Llc | 0.02% | 3,064,683 | $1,165,713,473 | $806,440,685 | -$359,272,788 | -30.82% | |
| T. Rowe Price Investment Management, Inc. | 0.71% | 2,850,185 | $1,084,125,000 | $749,997,681 | -$334,127,319 | -30.82% | |
| State Street Corp | 0.03% | 2,262,242 | $860,488,990 | $595,286,360 | -$265,202,630 | -30.82% | |
| Invesco Ltd. | 0.06% | 2,149,581 | $817,635,999 | $565,640,744 | -$251,995,255 | -30.82% | |
| Jpmorgan Chase & Co | 0.05% | 2,125,091 | $792,990,012 | $559,196,446 | -$233,793,566 | -29.48% | |
| Geode Capital Management, Llc | 0.03% | 1,409,741 | $536,341,338 | $370,959,247 | -$165,382,091 | -30.84% | |
| Wellington Management Group Llp | 0.08% | 1,205,711 | $458,616,294 | $317,270,793 | -$141,345,501 | -30.82% | |
| Massachusetts Financial Services Co | 0.14% | 1,166,242 | $443,584,418 | $306,884,920 | -$136,699,498 | -30.82% | |
| Capital Research Global Investors | 0.06% | 1,086,149 | $413,138,495 | $285,809,248 | -$127,329,247 | -30.82% | |
| Norges Bank | 0.04% | 996,731 | $379,126,570 | $262,279,795 | -$116,846,775 | -30.82% | |
| Whale Rock Capital Management Llc | 3.02% | 988,785 | $376,104,150 | $260,188,885 | -$115,915,265 | -30.82% | |
| Price T Rowe Associates Inc | 0.04% | 980,134 | $372,815,000 | $257,912,461 | -$114,902,539 | -30.82% | |
| Neuberger Berman Group Llc | 0.21% | 826,969 | $314,385,929 | $217,608,623 | -$96,777,306 | -30.78% | |
| Goldman Sachs Group Inc | 0.03% | 812,421 | $309,020,227 | $213,780,462 | -$95,239,765 | -30.82% | |
| Qube Research & Technologies Ltd | 0.33% | 790,678 | $300,750,191 | $208,059,009 | -$92,691,182 | -30.82% | |
| Polar Capital Holdings Plc | 0.81% | 750,517 | $285,474,151 | $197,491,043 | -$87,983,108 | -30.82% | |
| Charles Schwab Investment Management Inc | 0.03% | 666,659 | $253,577,084 | $175,424,649 | -$78,152,435 | -30.82% | |
| Bank Of America Corp | 0.02% | 651,293 | $247,732,319 | $171,381,240 | -$76,351,079 | -30.82% | |
| Gw&K Investment Management, Llc | 1.89% | 634,742 | $241,439,000 | $167,026,010 | -$74,412,990 | -30.82% | |
| Rafferty Asset Management, Llc | 0.55% | 632,776 | $240,689,007 | $166,508,677 | -$74,180,330 | -30.82% | |
| Artisan Partners Limited Partnership | 0.39% | 627,850 | $238,815,341 | $165,212,449 | -$73,602,892 | -30.82% | |
| Raymond James Financial Inc | 0.07% | 627,804 | $238,797,807 | $165,200,345 | -$73,597,462 | -30.82% | |
| Northern Trust Corp | 0.02% | 558,716 | $212,518,805 | $147,020,528 | -$65,498,277 | -30.82% | |
| Bank Of New York Mellon Corp | 0.03% | 537,879 | $204,593,194 | $141,537,480 | -$63,055,714 | -30.82% | |
| Jane Street Group, Llc | 0.13% | 534,564 | $203,332,109 | $140,665,171 | -$62,666,938 | -30.82% | |
| Bessemer Group Inc | 0.28% | 529,062 | $201,240,000 | $139,217,375 | -$62,022,625 | -30.82% | |
| Barclays Plc | 0.06% | 467,343 | $177,763,255 | $122,976,637 | -$54,786,618 | -30.82% | |
| Janus Henderson Group Plc | 0.09% | 784,118 | $174,109,136 | $206,332,811 | +$32,223,675 | +18.51% | |
| Clearbridge Investments, Llc | 0.14% | 441,217 | $167,825,737 | $116,101,841 | -$51,723,896 | -30.82% | |
| Millennium Management Llc | 0.11% | 430,400 | $163,711,248 | $113,255,456 | -$50,455,792 | -30.82% | |
| Vanguard Fiduciary Trust Co | 0.04% | 426,467 | $162,215,253 | $112,220,526 | -$49,994,727 | -30.82% | |
| Citigroup Inc | 0.07% | 410,179 | $156,019,786 | $107,934,502 | -$48,085,284 | -30.82% | |
| Evergreen Quality Fund Gp, Ltd. | 2.43% | 396,600 | $150,854,742 | $104,361,324 | -$46,493,418 | -30.82% | |
| Ubs Group Ag | 0.02% | 389,948 | $148,324,520 | $102,610,917 | -$45,713,603 | -30.82% | |
| Morgan Stanley | 0.01% | 380,490 | $144,727,537 | $100,122,139 | -$44,605,398 | -30.82% | |
| Deutsche Bank Ag\ | 0.04% | 362,727 | $137,970,469 | $95,447,983 | -$42,522,486 | -30.82% | |
| American Century Companies Inc | 0.06% | 334,965 | $127,410,732 | $88,142,690 | -$39,268,042 | -30.82% | |
| Allspring Global Investments Holdings, Llc | 0.19% | 362,062 | $126,949,799 | $95,272,995 | -$31,676,804 | -24.95% | |
| Alliancebernstein L.P. | 0.04% | 569,511 | $126,471,308 | $149,861,125 | +$23,389,817 | +18.49% | |
| Arrowstreet Capital, Limited Partnership | 0.05% | 321,342 | $122,228,857 | $84,557,934 | -$37,670,923 | -30.82% | |
| Stephens Investment Management Group Llc | 1.29% | 316,408 | $120,352,111 | $83,259,601 | -$37,092,510 | -30.82% | |
| First Trust Advisors Lp | 0.07% | 311,380 | $118,439,098 | $81,936,533 | -$36,502,565 | -30.82% | |
| Nomura Asset Management International Inc. | 0.18% | 307,227 | $116,860,000 | $80,843,713 | -$36,016,287 | -30.82% | |
| Analog Century Management Lp | 4.13% | 296,293 | $112,700,968 | $77,966,540 | -$34,734,428 | -30.82% | |
| Dimensional Fund Advisors Lp | 0.02% | 286,462 | $108,948,849 | $75,379,611 | -$33,569,238 | -30.81% | |
| Jennison Associates Llc | 0.06% | 269,632 | $102,559,923 | $70,950,964 | -$31,608,959 | -30.82% | |
| Timessquare Capital Management, Llc | 1.46% | 261,585 | $99,499,086 | $68,833,477 | -$30,665,609 | -30.82% |
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.