MACOM Technology Solutions Holdings, Inc.
MX ˙ BMV ˙ US55405Y1001
SecurityMX:MTSI / MACOM Technology Solutions Holdings, Inc.
InstitutionState Street Corp
Latest Disclosed Ownership2,152,751 shares
Latest Disclosed Value $ 478,061,415
State Street Corp reports 1.61% increase in ownership of MTSI / MACOM Technology Solutions Holdings, Inc.

On May 15, 2026 - State Street Corp filed a 13F-HR form disclosing ownership of 2,152,751 shares of MACOM Technology Solutions Holdings, Inc. (MX:MTSI) valued at $478,061,415 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 2,118,667 shares of MACOM Technology Solutions Holdings, Inc.. This represents a change in shares of 1.61% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 2,152,751 34,084 1.61 478,061 31.74 0.0165
2026-02-13 2025-12-31 13F MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 2,118,667 -46,763 -2.16 362,885 34.61 0.0122
2025-11-14 2025-09-30 13F MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 2,165,430 83,211 4.00 269,574 -9.65 0.0093
2025-08-14 2025-06-30 13F MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 2,082,219 182 0.01 298,361 42.76 0.0112
2025-05-15 2025-03-31 13F MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 2,082,037 61,041 3.02 208,995 -20.40 0.0086
2025-02-14 2024-12-31 13F MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 2,020,996 11,686 0.58 262,548 17.44 0.0104
2024-11-14 2024-09-30 13F MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 2,009,310 -31,521 -1.54 223,556 -1.73 0.0091
2024-08-14 2024-06-30 13F MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 2,040,831 -304,048 -12.97 227,491 1.44 0.0099
2024-05-15 2024-03-31 13F MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 2,344,879 84,005 3.72 224,264 6.72 0.0100
2024-02-14 2023-12-31 13F MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 2,260,874 13,251 0.59 210,148 14.61 0.0102
2023-11-14 2023-09-30 13F MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 2,247,623 -173,170 -7.15 183,361 15.59 0.0102
2023-08-14 2023-06-30 13F MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 2,420,793 153,759 6.78 158,635 -1.22 0.0083
2023-05-15 2023-03-31 13F MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 2,267,034 211,670 10.30 160,597 24.06 0.0091
2023-05-15 2022-12-31 13F/A-99 MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 2,055,364 -77,957 -3.65 129,447 17.16 0.0076
2023-05-15 2022-12-31 13F MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 2,055,364 -77,957 129,447 0.0076
2022-11-15 2022-09-30 13F MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 2,133,321 588,721 38.11 110,485 55.16 0.0070
2022-08-15 2022-06-30 13F MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 1,544,600 -19,143 -1.22 71,206 -23.94 0.0043
2022-05-16 2022-03-31 13F MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 1,563,743 52,005 3.44 93,621 -20.91 0.0046
2022-02-14 2021-12-31 13F MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 1,511,738 48,782 3.33 118,369 24.73 0.0056
2021-11-15 2021-09-30 13F MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 1,462,956 99,341 7.29 94,902 8.61 0.0050
2021-08-16 2021-06-30 13F MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 1,363,615 79,960 6.23 87,380 17.32 0.0046
2021-07-09 2021-03-31 13F/A-1 MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 1,283,655 -116,043 -8.29 74,478 -3.32 0.0043
2021-05-17 2021-03-31 13F MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 1,283,655 -116,043 74,478 0.0043
2021-02-16 2020-12-31 13F MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 1,399,698 3,633 0.26 77,039 62.26 0.0047
2020-11-10 2020-09-30 13F MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 1,396,065 -8,237 -0.59 47,480 -1.57 0.0032
2020-08-14 2020-06-30 13F MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 1,404,302 157,305 12.61 48,238 104.35 0.0035
2020-06-19 2020-03-31 13F/A-1 MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 1,246,997 -43,831 -3.40 23,606 -31.25 0.0021
2020-05-11 2020-03-31 13F MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 1,246,997 -43,831 23,606 2,073.0821
2020-02-06 2019-12-31 13F MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 1,290,828 -4,341 -0.34 34,336 23.33 0.0024
2019-11-14 2019-09-30 13F MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 1,295,169 -16,221 -1.24 27,840 40.32 0.0021
2019-08-14 2019-06-30 13F MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 1,311,390 102,184 8.45 19,841 -1.81 0.0015
2019-05-15 2019-03-31 13F MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 1,209,206 -54,585 -4.32 20,206 10.19 0.0016
2019-02-12 2018-12-31 13F MACOM TECH SOLUTIONS HLDGS I COM 55405Y100 1,263,791 -29,531 -2.28 18,338 -31.17 0.0017
2018-11-09 2018-09-30 13F M Common equity shares 55405Y100 1,293,322 6,936 0.54 26,642 -10.12 0.0020
2018-08-14 2018-06-30 13F M Common equity shares 55405Y100 1,286,386 23,640 1.87 29,643 41.39 0.0025
2018-05-15 2018-03-31 13F M Common equity shares 55405Y100 1,262,746 147,067 13.18 20,966 -42.25 0.0018
2018-02-14 2017-12-31 13F M Common equity shares 55405Y100 1,115,679 125,220 12.64 36,307 -17.83 0.0029
2017-11-14 2017-09-30 13F M Common equity shares 55405Y100 990,459 66,346 7.18 44,186 -14.26 0.0038
2017-08-14 2017-06-30 13F M Common equity shares 55405Y100 924,113 106,517 13.03 51,535 30.51 0.0046
2017-05-15 2017-03-31 13F M Common equity shares 55405Y100 817,596 252,140 44.59 39,487 50.89 0.0035
2017-02-09 2016-12-31 13F M Common equity shares 55405Y100 565,456 7,646 1.37 26,169 10.80 0.0025
2017-01-13 2016-09-30 13F/A-1 M Common equity shares 55405Y100 557,810 22,239 4.15 23,618 33.71 0.0024
2016-11-14 2016-09-30 13F M Common equity shares 55405Y100 557,810 23,618
2016-08-12 2016-06-30 13F M Common equity shares 55405Y100 535,571 31,641 6.28 17,664 -19.96 0.0019
2016-05-20 2016-03-31 13F/A-1 M Common equity shares 55405Y100 503,930 -17,958 -3.44 22,070 3.44 0.0024
2016-05-12 2016-03-31 13F M Common equity shares 55405Y100 503,930 22,070
2016-02-16 2015-12-31 13F M Common equity shares 55405Y100 521,888 74,722 16.71 21,337 64.61 0.0023
2015-11-16 2015-09-30 13F M Common equity shares 55405Y100 447,166 11,752 2.70 12,962 -22.16 0.0015
2015-08-13 2015-06-30 13F M Common equity shares 55405Y100 435,414 119,228 37.71 16,653 41.32 0.0018
2015-05-15 2015-03-31 13F M Common equity shares 55405Y100 316,186 170,299 116.73 11,784 158.19 0.0012
2015-02-11 2014-12-31 13F M Common equity shares 55405Y100 145,887 5,370 3.82 4,564 48.86 0.0005
2014-11-12 2014-09-30 13F/A-1 M Common equity shares 55405Y100 140,517 2,623 1.90 3,066 -0.97 0.0003
2014-11-10 2014-09-30 13F M Common equity shares 55405Y100 140,517 3,066
2014-08-12 2014-06-30 13F M Common equity shares 55405Y100 137,894 -8,082 -5.54 3,096 3.23 0.0003
2014-05-15 2014-03-31 13F/A-1 MA-COM TECHNOLOGY SOLUTIONS Common equity shares 55405Y100 145,976 12,118 9.05 2,999 31.94 0.0003
2014-05-13 2014-03-31 13F MA-COM TECHNOLOGY SOLUTIONS Common equity shares 55405Y100 145,976 2,999
2014-02-06 2013-12-31 13F/A-1 MA-COM TECHNOLOGY SOLUTIONS Common equity shares 55405Y100 133,858 6,190 4.85 2,273 4.51 0.0003
2014-02-06 2013-12-31 13F MA-COM TECHNOLOGY SOLUTIONS Common equity shares 55405Y100 72,551 1,083
2013-11-12 2013-09-30 13F MA-COM TECHNOLOGY SOLUTIONS Common equity shares 55405Y100 127,668 42,110 49.22 2,175 74.14 0.0003
2013-08-08 2013-06-30 13F MA-COM TECHNOLOGY SOLUTIONS Common equity shares 55405Y100 85,558 85,558 1,249 0.0002
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.