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MTSI · MACOM Technology Solutions Holdings, Inc. · Shareholders & Ownership

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$273.05 +10.12 (+3.85%) At close · Oct 21
Market Cap
$20.08B
Shares
76.37M
Volume · Oct 21 1.11M Avg daily vol (3M) 1.4M

Every disclosed holder of MTSI in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

Who Owns MTSI

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions

No chart: the summed disclosures exceed shares outstanding, so they are not parts of one whole.

Holder group Shares % Out
Institutional (13F) 73,263,996 95.93%
Insiders (Forms 3, 4, 5) 3,795,058 4.97%
13D/G-only blocks 0 0.00%
Remaining 688,123 -0.90%
Registered funds (N-PORT, not summed) 42,757,834 55.99%

Shares outstanding: 76,370,931, the issuer's latest cover-page count restated onto today's split basis.

Remaining is negative: the summed disclosures exceed shares outstanding, as when filings are dated at different times or holders that do not disclose their links count the same shares. It is flagged, not clipped.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of MTSI

# Holder Shares
1
FMR LLC
13F CIK 315066 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
10,527,144
1.1
Select Semiconductors Portfolio
Fund S000007458 · Registered fund · May 31, 2026
Fidelity Select Portfolios, not summed
3,808,564
1.2
Fidelity OTC Portfolio
Fund S000007191 · Registered fund · Jul 31, 2026
Fidelity Securities Fund, not summed
858,700
1.3
Fidelity Advisor Semiconductors Fund
Fund S000005327 · Registered fund · Jul 31, 2026
Fidelity Advisor Series VII, not summed
592,692
1.4
Strategic Advisers Fidelity U.S. Total Stock Fund
Fund S000061481 · Registered fund · May 31, 2026
Fidelity Rutland Square Trust II, not summed
533,081
1.5
Fidelity Blue Chip Growth Fund
Fund S000007195 · Registered fund · Jul 31, 2026
Fidelity Securities Fund, not summed
413,822
2
BlackRock, Inc.
13F CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
9,512,899
2.1
BlackRock, Inc.
13G CIK 2012383 · Holding company · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
7,964,299
2.2
iShares Core S&P Mid-Cap ETF
Fund S000004307 · Registered fund · Jun 30, 2026
iShares Trust, not summed
2,245,420
2.3
iShares Semiconductor ETF
Fund S000004354 · Registered fund · Jun 30, 2026
iShares Trust, not summed
1,475,674
2.4
iShares A.I. Innovation and Tech Active ETF
Fund S000086268 · Registered fund · Jul 31, 2026
BlackRock ETF Trust, not summed
827,846
2.5
iShares Russell Mid-Cap Growth ETF
Fund S000004336 · Registered fund · Jun 30, 2026
iShares Trust, not summed
394,721
3
Susan M. Ocampo
13G CIK 1252243 · Unknown · Jun 30, 2026
Rule 13d-1(d), exempt investor, not summed
4,884,490
3.1
OCAMPO SUSAN
Insider CIK 1252243 · Feb 25, 2026
10% Owner, issuer-wide
3,585,430
4
VANGUARD PORTFOLIO MANAGEMENT LLC
13F CIK 2100121 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
3,605,324
5
VANGUARD CAPITAL MANAGEMENT LLC
13F CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
3,064,683
6
T. Rowe Price Investment Management, Inc.
13F CIK 1897612 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
2,850,185
6.1
T. Rowe Price Investment Management, Inc.
13G CIK 1897612 · Investment adviser · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
2,850,185
7
STATE STREET CORP
13F CIK 93751 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
2,262,242
7.1
State Street(R) SPDR(R) Portfolio S&P 400(TM) Mid Cap ETF
Fund S000006986 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
332,124
7.2
State Street(R) SPDR(R) S&P(R) Semiconductor ETF
Fund S000010020 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
206,007
7.3
State Street(R) SPDR(R) S & P 400(TM) Mid Cap Growth ETF
Fund S000006987 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
101,483
7.4
STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO
Fund S000050332 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
23,221
7.5
State Street(R) SPDR(R) Portfolio S&P 1500(R) Composite Stock Market ETF
Fund S000006973 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
10,212
8
VANGUARD TOTAL STOCK MARKET INDEX FUND
Fund S000002848 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
2,179,866
9
Invesco Ltd.
13F CIK 914208 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
2,149,581
9.1
Invesco Discovery Fund
Fund S000064618 · Registered fund · May 31, 2026
AIM Counselor Series Trust (Invesco Counselor Series Trust), not summed
488,236
9.2
Invesco Discovery Mid Cap Growth Fund
Fund S000064710 · Registered fund · Jul 31, 2026
AIM Investment Funds (Invesco Investment Funds), not summed
452,068
9.3
Invesco S&P MidCap Momentum ETF
Fund S000003056 · Registered fund · Jul 31, 2026
Invesco Exchange-Traded Fund Trust, not summed
410,839
9.4
Invesco Semiconductors ETF
Fund S000003032 · Registered fund · Jul 31, 2026
Invesco Exchange-Traded Fund Trust, not summed
185,659
9.5
Invesco Technology Fund
Fund S000000160 · Registered fund · Jul 31, 2026
AIM Sector Funds (Invesco Sector Funds), not summed
157,942
10
JPMORGAN CHASE & CO
13F CIK 19617 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
2,125,091
11
VANGUARD SMALL-CAP INDEX FUND
Fund S000002845 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
1,574,806
12
GEODE CAPITAL MANAGEMENT, LLC
13F CIK 1214717 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,409,741
13
WELLINGTON MANAGEMENT GROUP LLP
13F CIK 902219 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
1,205,711
13.1
VANGUARD ADVICE SELECT GLOBAL VALUE FUND
Fund S000074282 · Registered fund · Jul 31, 2026
VANGUARD WHITEHALL FUNDS, not summed
41,793
14
MASSACHUSETTS FINANCIAL SERVICES CO /MA/
13F CIK 912938 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,166,242
14.1
MFS Mid Cap Growth Fund
Fund S000002434 · Registered fund · May 31, 2026
MFS Series Trust IV, not summed
427,175
14.2
MFS Mid Cap Value Fund
Fund S000002499 · Registered fund · Jun 30, 2026
MFS SERIES TRUST XI, not summed
212,681
14.3
MFS New Discovery Fund
Fund S000000765 · Registered fund · May 31, 2026
MFS SERIES TRUST I, not summed
68,537
14.4
MFS Core Equity Fund
Fund S000000763 · Registered fund · May 31, 2026
MFS SERIES TRUST I, not summed
56,940
14.5
MFS New Discovery Series
Fund S000002680 · Registered fund · Jun 30, 2026
MFS VARIABLE INSURANCE TRUST, not summed
22,136
15
Capital Research Global Investors
13F CIK 1422848 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,086,149
16
SMALLCAP World Fund Inc
Fund S000009599 · Registered fund · Jun 30, 2026
SMALLCAP World Fund Inc, not summed
1,057,263
17
NORGES BANK
13F CIK 1374170 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
996,731
18
Whale Rock Capital Management LLC
13F CIK 1387322 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
988,785
19
PRICE T ROWE ASSOCIATES INC /MD/
13F CIK 80255 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
980,134
19.1
T. Rowe Price Mid-Cap Growth Fund, Inc.
Fund S000002102 · Registered fund · Jun 30, 2026
T. ROWE PRICE MID-CAP GROWTH FUND, INC., not summed
1,185,457
19.2
T. Rowe Price Small-Cap Stock Fund, Inc.
Fund S000002120 · Registered fund · Jun 30, 2026
T. ROWE PRICE SMALL-CAP STOCK FUND, INC., not summed
191,946
19.3
T. Rowe Price Science & Technology Fund, Inc.
Fund S000002119 · Registered fund · Jun 30, 2026
T. ROWE PRICE SCIENCE & TECHNOLOGY FUND, INC., not summed
150,600
19.4
T. Rowe Price Institutional Mid-Cap Equity Growth Fund
Fund S000002092 · Registered fund · Jun 30, 2026
T. Rowe Price Equity Funds, Inc., not summed
130,118
19.5
T. Rowe Price Institutional Small-Cap Stock Fund
Fund S000002094 · Registered fund · Jun 30, 2026
T. Rowe Price Equity Funds, Inc., not summed
104,927
20
VANGUARD SMALL-CAP GROWTH INDEX FUND
Fund S000002846 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
907,833
21
NEUBERGER BERMAN GROUP LLC
13F CIK 1465109 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
826,969
21.1
Neuberger Intrinsic Value Fund
Fund S000028676 · Registered fund · May 31, 2026
NEUBERGER BERMAN EQUITY FUNDS, not summed
49,520
21.2
Neuberger Small Cap Growth Fund
Fund S000007839 · Registered fund · May 31, 2026
NEUBERGER BERMAN EQUITY FUNDS, not summed
5,869
21.3
Mid Cap Intrinsic Value Portfolio
Fund S000008201 · Registered fund · Jun 30, 2026
NEUBERGER BERMAN ADVISERS MANAGEMENT TRUST, not summed
5,315
21.4
Neuberger Mid Cap Intrinsic Value Fund
Fund S000007846 · Registered fund · May 31, 2026
NEUBERGER BERMAN EQUITY FUNDS, not summed
3,027
22
VANGUARD EXPLORER FUND
Fund S000002578 · Registered fund · Jul 31, 2026
VANGUARD EXPLORER FUND, not summed
823,041
23
GOLDMAN SACHS GROUP INC
13F CIK 886982 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
812,421
23.1
Goldman Sachs Small/Mid Cap Growth Fund
Fund S000009322 · Registered fund · May 31, 2026
Goldman Sachs Trust, not summed
102,040
23.2
Goldman Sachs ActiveBeta(R) U.S. Large Cap Equity ETF
Fund S000048295 · Registered fund · May 31, 2026
Goldman Sachs ETF Trust, not summed
14,192
23.3
Goldman Sachs Small/Mid Cap Equity Fund
Fund S000044015 · Registered fund · May 31, 2026
Goldman Sachs Trust, not summed
13,091
23.4
Goldman Sachs Equal Weight U.S. Large Cap Equity ETF
Fund S000058070 · Registered fund · May 31, 2026
Goldman Sachs ETF Trust, not summed
11,224
23.5
Goldman Sachs Multi-Manager Global Equity Fund
Fund S000049146 · Registered fund · Jul 31, 2026
Goldman Sachs Trust II, not summed
3,929
24
FRANKLIN RESOURCES INC
13F CIK 38777 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
798,891
24.1
Franklin Small-Mid Cap Growth Fund
Fund S000006888 · Registered fund · Jul 31, 2026
Franklin Strategic Series, not summed
188,986
24.2
Franklin Growth Opportunities Fund
Fund S000006878 · Registered fund · Jul 31, 2026
Franklin Strategic Series, not summed
73,346
24.3
Franklin Small-Mid Cap Growth VIP Fund
Fund S000007314 · Registered fund · Jun 30, 2026
Franklin Templeton Variable Insurance Products Trust, not summed
16,749
24.4
Franklin U.S. Large Cap Multifactor Index ETF
Fund S000057200 · Registered fund · Jun 30, 2026
Franklin Templeton ETF Trust, not summed
8,432
24.5
Franklin Large Cap Growth VIP Fund
Fund S000007330 · Registered fund · Jun 30, 2026
Franklin Templeton Variable Insurance Products Trust, not summed
1,486
25
Qube Research & Technologies Ltd
13F CIK 1729829 · Exempt reporting adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
790,678
26
VANGUARD INFORMATION TECHNOLOGY INDEX FUND
Fund S000004452 · Registered fund · May 31, 2026
VANGUARD WORLD FUND, not summed
763,732
27
VANGUARD EXTENDED MARKET INDEX FUND
Fund S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
752,265
28
Polar Capital Holdings Plc
13F CIK 1837309 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
750,517
29
Jupiter Topco LLC
13F CIK 2146052 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
674,790
29.1
Janus Henderson Small/Mid Cap Growth Alpha ETF
Fund S000052564 · Registered fund · Jul 31, 2026
Janus Detroit Street Trust, not summed
33,969
29.2
Janus Henderson Mid Cap Growth Alpha ETF
Fund S000087757 · Registered fund · Jul 31, 2026
Janus Detroit Street Trust, not summed
295
30
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
13F CIK 884546 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
666,659
30.1
Schwab U.S. Small-Cap ETF
Fund S000026636 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
309,960
30.2
Schwab U.S. Mid-Cap ETF
Fund S000026635 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
174,439
30.3
Schwab Total Stock Market Index Fund
Fund S000005913 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
39,520
30.4
Schwab U.S. Broad Market ETF
Fund S000026631 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
38,335
30.5
Schwab Fundamental U.S. Small Company ETF
Fund S000040878 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
24,353
31
BANK OF AMERICA CORP /DE/
13F CIK 70858 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
651,293
32
GW&K Investment Management, LLC
13F CIK 1082917 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
634,742
33
Rafferty Asset Management, LLC
13F CIK 1389426 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
632,776
33.1
Direxion Daily Semiconductor Bull 3X Shares
Fund S000027920 · Registered fund · Jul 31, 2026
Direxion Shares ETF Trust, not summed
525,907
33.2
Direxion Daily Mid Cap Bull 3X Shares
Fund S000022778 · Registered fund · Jul 31, 2026
Direxion Shares ETF Trust, not summed
963
34
Artisan Partners Limited Partnership
13F CIK 1466153 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
627,850
34.1
Artisan Mid Cap Fund
Fund S000006496 · Registered fund · Jun 30, 2026
Artisan Partners Funds Inc., not summed
152,838
34.2
Artisan Small Cap Fund
Fund S000006498 · Registered fund · Jun 30, 2026
Artisan Partners Funds Inc., not summed
36,011
34.3
Artisan Global Discovery Fund
Fund S000058458 · Registered fund · Jun 30, 2026
Artisan Partners Funds Inc., not summed
3,781
35
RAYMOND JAMES FINANCIAL INC
13F CIK 720005 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
627,804
35.1
Carillon Eagle Mid Cap Growth Fund
Fund S000008481 · Registered fund · Jun 30, 2026
Carillon Series Trust, not summed
244,183
35.2
Carillon Scout Mid Cap Fund
Fund S000058963 · Registered fund · Jun 30, 2026
Carillon Series Trust, not summed
171,604
35.3
Carillon Chartwell Small Cap Fund
Fund S000058964 · Registered fund · Jun 30, 2026
Carillon Series Trust, not summed
25,366
35.4
Carillon Chartwell Small Cap Growth Fund
Fund S000075963 · Registered fund · Jun 30, 2026
Carillon Series Trust, not summed
19,280
36
ALLIANCEBERNSTEIN L.P.
13F CIK 1109448 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
569,511
36.1
AB DISCOVERY GROWTH FUND, INC.
Fund S000010117 · Registered fund · Jun 30, 2026
AB DISCOVERY GROWTH FUND, INC., not summed
150,099
36.2
AB Small Cap Growth Portfolio
Fund S000010309 · Registered fund · Jun 30, 2026
AB CAP FUND, INC., not summed
59,499
36.3
AB Small Cap Growth Portfolio
Fund S000010435 · Registered fund · Jun 30, 2026
AB VARIABLE PRODUCTS SERIES FUND, INC., not summed
1,130
36.4
Tax-Aware Overlay A Portfolio
Fund S000027648 · Registered fund · Jun 30, 2026
BERNSTEIN SANFORD C FUND INC, not summed
1,044
36.5
Overlay A Portfolio
Fund S000027647 · Registered fund · Jun 30, 2026
BERNSTEIN SANFORD C FUND INC, not summed
427
37
NORTHERN TRUST CORP
13F CIK 73124 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
558,716
37.1
Mid Cap Index Fund
Fund S000001273 · Registered fund · Jun 30, 2026
Northern Funds, not summed
42,649
37.2
FlexShares Morningstar US Market Factor Tilt Index Fund
Fund S000033312 · Registered fund · Jul 31, 2026
FlexShares Trust, not summed
1,738
38
Bank of New York Mellon Corp
13F CIK 1390777 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
537,879
38.1
BNY Mellon US Mid Cap Core Equity ETF
Fund S000067261 · Registered fund · Jul 31, 2026
BNY Mellon ETF Trust, not summed
10,180
39
JANE STREET GROUP, LLC
13F CIK 1595888 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
534,564
40
BESSEMER GROUP INC
13F CIK 1054074 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
529,062
40.1
Old Westbury Small & Mid Cap Strategies Fund
Fund S000001857 · Registered fund · Jul 31, 2026
Old Westbury Funds Inc, not summed
100,375
40.2
Old Westbury All Cap Core Fund
Fund S000001859 · Registered fund · Jul 31, 2026
Old Westbury Funds Inc, not summed
57,776
40.3
Old Westbury Total Equity Fund
Fund S000090405 · Registered fund · Jul 31, 2026
Old Westbury Funds Inc, not summed
7,726
41
BARCLAYS PLC
13F CIK 312069 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
467,343
42
Clearbridge Investments, LLC
13F CIK 1348883 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
441,217
43
MILLENNIUM MANAGEMENT LLC
13F CIK 1273087 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
430,400
44
VANGUARD FIDUCIARY TRUST CO
13F CIK 933478 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
426,467
45
CITIGROUP INC
13F CIK 831001 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
410,179
46
Evergreen Quality Fund GP, Ltd.
13F CIK 2016939 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
396,600
47
UBS Group AG
13F CIK 1610520 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
389,948
48
VANGUARD WINDSOR FUND
Fund S000004417 · Registered fund · Jul 31, 2026
VANGUARD WINDSOR FUNDS, not summed
380,640
49
MORGAN STANLEY
13F CIK 895421 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
380,490
49.1
E*TRADE No Fee Total Market Index Fund
Fund S000090722 · Registered fund · Jul 31, 2026
E Trade Trust, not summed
97
50
DEUTSCHE BANK AG\
13F CIK 948046 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
362,727
50.1
DWS Science and Technology Fund
Fund S000031522 · Registered fund · Jul 31, 2026
DEUTSCHE DWS SECURITIES TRUST, not summed
83,034
50.2
DWS Digital Horizons Fund
Fund S000032042 · Registered fund · Jun 30, 2026
DEUTSCHE DWS SECURITIES TRUST, not summed
3,077
50.3
DWS Small Mid Cap Growth VIP
Fund S000006260 · Registered fund · Jun 30, 2026
DEUTSCHE DWS VARIABLE SERIES II, not summed
1,100
50.4
Xtrackers Russell US Multifactor ETF
Fund S000048521 · Registered fund · May 29, 2026
DBX ETF Trust, not summed
267
50.5
Xtrackers S&P MidCap 400 Scored & Screened ETF
Fund S000070348 · Registered fund · May 29, 2026
DBX ETF Trust, not summed
87

156 more nested rows are not shown here; Every filing lists them all.

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Showing 1–50 of 915 holders

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Key facts CIK 1493594 CUSIP 55405Y100 13F (30d) 82 filings 79 filers Visit website Investor relations