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MKSI · Mks Inc · Shareholders & Ownership

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Market Cap
$13.00B
Shares
67.62M
Volume · Nov 6 2.62M Avg daily vol (3M) 1.36M

Every disclosed holder of MKSI 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 MKSI

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) 72,187,200 106.75%
Insiders (Forms 3, 4, 5) 335,960 0.50%
13D/G-only blocks 0 0.00%
Remaining 4,902,685 -7.25%
Registered funds (N-PORT, not summed) 33,161,498 49.04%

Shares outstanding: 67,620,475, 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 MKSI

# Holder Shares
1
BlackRock, Inc.
13F CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
6,930,030
1.1
iShares Core S&P Mid-Cap ETF
Fund S000004307 · Registered fund · Jun 30, 2026
iShares Trust, not summed
2,311,488
1.2
iShares S&P Mid-Cap 400 Growth ETF
Fund S000004308 · Registered fund · Jun 30, 2026
iShares Trust, not summed
286,932
1.3
iShares Russell Mid-Cap ETF
Fund S000004338 · Registered fund · Jun 30, 2026
iShares Trust, not summed
275,451
1.4
BlackRock Mid-Cap Growth Equity Portfolio
Fund S000001505 · Registered fund · Aug 31, 2026
BlackRock Funds, not summed
195,633
1.5
iShares A.I. Innovation and Tech Active ETF
Fund S000086268 · Registered fund · Jul 31, 2026
BlackRock ETF Trust, not summed
168,094
2
Invesco Ltd.
13F CIK 914208 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
4,661,664
2.1
Invesco Small Cap Value Fund
Fund S000027837 · Registered fund · Jul 31, 2026
AIM Sector Funds (Invesco Sector Funds), not summed
1,146,556
2.2
Invesco Value Opportunities Fund
Fund S000027840 · Registered fund · Jul 31, 2026
AIM Sector Funds (Invesco Sector Funds), not summed
882,467
2.3
Invesco S&P MidCap Momentum ETF
Fund S000003056 · Registered fund · Jul 31, 2026
Invesco Exchange-Traded Fund Trust, not summed
524,639
2.4
Invesco Discovery Mid Cap Growth Fund
Fund S000064710 · Registered fund · Jul 31, 2026
AIM Investment Funds (Invesco Investment Funds), not summed
238,497
2.5
Invesco Semiconductors ETF
Fund S000003032 · Registered fund · Jul 31, 2026
Invesco Exchange-Traded Fund Trust, not summed
227,663
3
VANGUARD PORTFOLIO MANAGEMENT LLC
13F CIK 2100121 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
3,707,327
4
VANGUARD CAPITAL MANAGEMENT LLC
13F CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
3,049,560
5
SMALLCAP World Fund Inc
Fund S000009599 · Registered fund · Jun 30, 2026
SMALLCAP World Fund Inc, not summed
2,453,957
6
VANGUARD TOTAL STOCK MARKET INDEX FUND
Fund S000002848 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
2,143,925
7
STATE STREET CORP
13F CIK 93751 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
2,134,663
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
341,899
7.2
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
74,340
7.3
State Street(R) SPDR(R) S & P 400(TM) Mid Cap Value ETF
Fund S000006988 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
30,100
7.4
STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO
Fund S000050332 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
23,423
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
11,014
8
JPMORGAN CHASE & CO
13G CIK 19617 · Bank · Aug 31, 2026
Rule 13d-1(b), qualified institution, not summed
2,005,756
8.1
JPMORGAN CHASE & CO
13F CIK 19617 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
3,373,844
9
Point72 Asset Management, L.P.
13F CIK 1603466 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,996,843
10
Capital International Investors
13F CIK 1562230 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,915,187
11
PRICE T ROWE ASSOCIATES INC /MD/
13F CIK 80255 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,889,901
11.1
T. Rowe Price Mid-Cap Value Fund, Inc.
Fund S000002103 · Registered fund · Jun 30, 2026
T. ROWE PRICE MID-CAP VALUE FUND, INC., not summed
486,420
11.2
T. Rowe Price Integrated U.S. Small-Cap Growth Equity Fund
Fund S000002074 · Registered fund · Jun 30, 2026
T. ROWE PRICE INTEGRATED EQUITY FUNDS, INC., not summed
135,518
11.3
T. Rowe Price Small-Mid Cap ETF
Fund S000079837 · Registered fund · Jun 30, 2026
T. Rowe Price Exchange-Traded Funds, Inc., not summed
68,657
11.4
T. Rowe Price New Horizons Fund, Inc.
Fund S000002106 · Registered fund · Jun 30, 2026
T. ROWE PRICE NEW HORIZONS FUND, INC., not summed
49,267
11.5
T. Rowe Price Science & Technology Fund, Inc.
Fund S000002119 · Registered fund · Jun 30, 2026
T. ROWE PRICE SCIENCE & TECHNOLOGY FUND, INC., not summed
46,800
12
Aspex Management (HK) Ltd
13F CIK 1768375 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
1,820,441
13
VANGUARD SMALL-CAP INDEX FUND
Fund S000002845 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
1,548,875
14
GEODE CAPITAL MANAGEMENT, LLC
13F CIK 1214717 · Registered investment adviser · Sep 30, 2026
1,544,921
15
FMR LLC
13F CIK 315066 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
1,499,498
15.1
VIP Mid Cap Portfolio
Fund S000007734 · Registered fund · Jun 30, 2026
Variable Insurance Products Fund III, not summed
384,500
15.2
Fidelity Extended Market Index Fund
Fund S000006021 · Registered fund · Aug 31, 2026
Fidelity Concord Street Trust, not summed
327,842
15.3
Fidelity Mid Cap Index Fund
Fund S000033637 · Registered fund · Jul 31, 2026
Fidelity Salem Street Trust, not summed
254,150
15.4
Fidelity Leveraged Company Stock Fund
Fund S000007200 · Registered fund · Jul 31, 2026
Fidelity Securities Fund, not summed
220,400
15.5
Fidelity Capital and Income Fund
Fund S000007495 · Registered fund · Jul 31, 2026
Fidelity Summer Street Trust, not summed
155,900
16
WELLINGTON MANAGEMENT GROUP LLP
13F CIK 902219 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
1,416,034
17
Capital World Investors
13F CIK 1422849 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,366,290
18
Whale Rock Capital Management LLC
13F CIK 1387322 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,271,373
19
NEUBERGER BERMAN GROUP LLC
13F CIK 1465109 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
1,165,068
19.1
Neuberger Genesis Fund
Fund S000007841 · Registered fund · Aug 31, 2026
NEUBERGER BERMAN EQUITY FUNDS, not summed
269,374
19.2
Neuberger Small-Mid Cap ETF
Fund S000084236 · Registered fund · Aug 31, 2026
Neuberger Berman ETF Trust, not summed
7,168
20
ALKEON CAPITAL MANAGEMENT LLC
13F CIK 1230239 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,072,040
21
NORGES BANK
13F CIK 1374170 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
954,667
22
WESTFIELD CAPITAL MANAGEMENT CO LP
13F CIK 1177719 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
928,617
23
Sachem Head Capital Management LP
13F CIK 1582090 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
812,700
24
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
13F CIK 884546 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
808,198
24.1
Schwab U.S. Small-Cap ETF
Fund S000026636 · Registered fund · Aug 31, 2026
SCHWAB STRATEGIC TRUST, not summed
321,165
24.2
Schwab U.S. Mid-Cap ETF
Fund S000026635 · Registered fund · Aug 31, 2026
SCHWAB STRATEGIC TRUST, not summed
186,836
24.3
Schwab Fundamental U.S. Small Company ETF
Fund S000040878 · Registered fund · Aug 31, 2026
SCHWAB STRATEGIC TRUST, not summed
114,468
24.4
Schwab Total Stock Market Index Fund
Fund S000005913 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
40,922
24.5
Schwab U.S. Broad Market ETF
Fund S000026631 · Registered fund · Aug 31, 2026
SCHWAB STRATEGIC TRUST, not summed
40,584
25
JPMorgan Large Cap Growth Fund
Fund S000003856 · Registered fund · Jun 30, 2026
JPMorgan Trust II, not summed
800,077
26
Bank of New York Mellon Corp
13F CIK 1390777 · Bank · Sep 30, 2026
790,715
26.1
BNY Mellon US Mid Cap Core Equity ETF
Fund S000067261 · Registered fund · Jul 31, 2026
BNY Mellon ETF Trust, not summed
10,088
27
VANGUARD EXTENDED MARKET INDEX FUND
Fund S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
774,625
28
FengHe Fund Management Pte. Ltd.
13F CIK 1660531 · Exempt reporting adviser · Sep 30, 2026
771,263
29
VANGUARD INFORMATION TECHNOLOGY INDEX FUND
Fund S000004452 · Registered fund · Aug 31, 2026
VANGUARD WORLD FUND, not summed
699,736
30
CITADEL ADVISORS LLC
13F CIK 1423053 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
697,670
31
MORGAN STANLEY
13F CIK 895421 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
681,576
31.1
E*TRADE No Fee Total Market Index Fund
Fund S000090722 · Registered fund · Jul 31, 2026
E Trade Trust, not summed
110
32
MILLENNIUM MANAGEMENT LLC
13F CIK 1273087 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
645,071
33
AQR CAPITAL MANAGEMENT LLC
13F CIK 1167557 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
638,333
33.1
AQR Style Premia Alternative Fund
Fund S000042050 · Registered fund · Jun 30, 2026
AQR Funds, not summed
26,716
33.2
AQR Equity Market Neutral Fund
Fund S000046740 · Registered fund · Jun 30, 2026
AQR Funds, not summed
22,180
33.3
AQR Long-Short Equity Fund
Fund S000041116 · Registered fund · Jun 30, 2026
AQR Funds, not summed
20,020
33.4
AQR Large Cap Momentum Style Fund
Fund S000025643 · Registered fund · Mar 31, 2026
AQR Funds, not summed
7,851
33.5
AQR Large Cap Multi-Style Fund
Fund S000040063 · Registered fund · Jun 30, 2026
AQR Funds, not summed
7,851
34
VICTORY CAPITAL MANAGEMENT INC
13F CIK 1040188 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
609,027
34.1
VICTORY CAPITAL MANAGEMENT INC
13G CIK 1040188 · Registered investment adviser · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
604,690
34.2
Victory Sycamore Established Value Fund
Fund S000000788 · Registered fund · Jun 30, 2026
Victory Portfolios, not summed
340,000
34.3
Victory 500 Index Fund
Fund S000012915 · Registered fund · Jul 31, 2026
Victory Portfolios III, not summed
15,264
34.4
Victory Integrity Mid-Cap Value Fund
Fund S000046397 · Registered fund · Jun 30, 2026
Victory Portfolios, not summed
11,264
34.5
Victory Integrity Small/Mid-Cap Value Fund
Fund S000046398 · Registered fund · Jun 30, 2026
Victory Portfolios, not summed
10,974
35
Growth Fund of America
Fund S000009228 · Registered fund · Aug 31, 2026
Growth Fund of America, not summed
607,811
36
Qube Research & Technologies Ltd
13F CIK 1729829 · Exempt reporting adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
606,068
37
NORTHERN TRUST CORP
13F CIK 73124 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
577,866
37.1
Mid Cap Index Fund
Fund S000001273 · Registered fund · Jun 30, 2026
Northern Funds, not summed
43,904
37.2
FlexShares Morningstar US Market Factor Tilt Index Fund
Fund S000033312 · Registered fund · Jul 31, 2026
FlexShares Trust, not summed
1,738
37.3
FlexShares STOXX US ESG Select Index Fund
Fund S000054498 · Registered fund · Jul 31, 2026
FlexShares Trust, not summed
90
38
JPMorgan Mid Cap Value Fund
Fund S000004475 · Registered fund · Jun 30, 2026
J.P. Morgan Fleming Mutual Fund Group, Inc., not summed
542,695
39
DIMENSIONAL FUND ADVISORS LP
13F CIK 354204 · Registered investment adviser · Sep 30, 2026
528,142
39.1
Dimensional U.S. Core Equity 2 ETF
Fund S000070903 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
111,882
39.2
U.S. CORE EQUITY 2 PORTFOLIO
Fund S000000980 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
59,654
39.3
Dimensional U.S. Marketwide Value ETF
Fund S000075030 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
32,349
39.4
U.S. CORE EQUITY 1 PORTFOLIO
Fund S000000979 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
25,727
39.5
Dimensional U.S. Equity Market ETF
Fund S000070902 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
20,473
40
BANK OF AMERICA CORP /DE/
13F CIK 70858 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
520,847
41
VANGUARD SMALL-CAP VALUE INDEX FUND
Fund S000002847 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
490,632
42
PRINCIPAL FINANCIAL GROUP INC
13F CIK 1126328 · Insurance company · Sep 30, 2026
458,256
42.1
Small-MidCap Dividend Income Fund
Fund S000032942 · Registered fund · Aug 31, 2026
Principal Funds, Inc, not summed
92,209
42.2
MidCap S&P 400 Index Fund
Fund S000007079 · Registered fund · Jul 31, 2026
Principal Funds, Inc, not summed
25,823
42.3
MidCap Value Fund I
Fund S000007173 · Registered fund · Jul 31, 2026
Principal Funds, Inc, not summed
11,340
43
VANGUARD SMALL-CAP GROWTH INDEX FUND
Fund S000002846 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
446,527
44
Assenagon Asset Management S.A.
13F CIK 1546007 · Unknown · Sep 30, 2026
442,273
45
VANGUARD FIDUCIARY TRUST CO
13F CIK 933478 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
428,157
46
GOLDMAN SACHS GROUP INC
13F CIK 886982 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
361,721
46.1
Goldman Sachs ActiveBeta(R) U.S. Large Cap Equity ETF
Fund S000048295 · Registered fund · Aug 31, 2026
Goldman Sachs ETF Trust, not summed
44,197
46.2
Goldman Sachs Mid Cap Value Fund
Fund S000009320 · Registered fund · Aug 31, 2026
Goldman Sachs Trust, not summed
26,018
46.3
Goldman Sachs Equal Weight U.S. Large Cap Equity ETF
Fund S000058070 · Registered fund · Aug 31, 2026
Goldman Sachs ETF Trust, not summed
13,051
46.4
Multi-Manager U.S. Small Cap Equity Fund
Fund S000051363 · Registered fund · Apr 30, 2026
Goldman Sachs Trust II, not summed
7,440
46.5
Goldman Sachs Small/Mid Cap Equity Fund
Fund S000044015 · Registered fund · Aug 31, 2026
Goldman Sachs Trust, not summed
5,878
47
Nuveen, LLC
13F CIK 1871926 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
361,411
47.1
Nuveen Mid Cap Value Fund
Fund S000005385 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
101,048
47.2
Nuveen Equity Index Fund
Fund S000005360 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
54,844
47.3
Nuveen Quant Small/Mid Cap Equity Fund
Fund S000054623 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
53,870
47.4
College Retirement Equities Fund - Total Global Stock Account
Fund S000005080 · Registered fund · Jun 30, 2026
College Retirement Equities Fund, not summed
43,700
47.5
Nuveen Large Cap Value Index Fund
Fund S000005388 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
22,441
48
RAYMOND JAMES FINANCIAL INC
13F CIK 720005 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
327,432
48.1
Carillon Scout Mid Cap Fund
Fund S000058963 · Registered fund · Jun 30, 2026
Carillon Series Trust, not summed
131,783
48.2
Carillon Chartwell Small Cap Fund
Fund S000058964 · Registered fund · Jun 30, 2026
Carillon Series Trust, not summed
5,784
48.3
Carillon Chartwell Small Cap Growth Fund
Fund S000075963 · Registered fund · Jun 30, 2026
Carillon Series Trust, not summed
4,117
49
UBS Group AG
13F CIK 1610520 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
321,728
50
SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC
13F CIK 1638555 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
319,833

132 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 1,040 holders

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Key facts CIK 1049502 CUSIP 55306N104 13F (30d) 323 filings 288 filers Visit website Investor relations