Company · Ownership research

MKS INC MKSI

CIK 0001049502 · CUSIP 55306N104

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 55306N104 (MKSI), not CUSIP 55306N904 (MKSI), CUSIP 55306N954 (MKSI), and does not merge CUSIPs.

This page lists the top 20 of 411 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	VANGUARD GROUP INC CIK 102909 · View history	$798.86M 7,348,564 shares	0.01%	+380.71K(+5.50%)Added	SEC filing ↗ Nov 13, 2024	▾
02	BlackRock, Inc. CIK 2012383 · View history	$745.00M 6,853,059 shares	0.02%	—	SEC filing ↗ Nov 13, 2024	▾
03	FMR LLC CIK 315066 · Amended · View history	$468.64M 4,310,898 shares	0.03%	-129.53K(-2.90%)Reduced	SEC filing ↗ Nov 13, 2024	▾
04	PRICE T ROWE ASSOCIATES INC /MD/ CIK 80255 · View history	$465.13M 4,278,634 shares	0.05%	-2.57M(-37.50%)Reduced	SEC filing ↗ Nov 14, 2024	▾
05	Capital International Investors CIK 1562230 · View history	$343.57M 3,160,389 shares	0.07%	+913(0.00%)Added	SEC filing ↗ Nov 13, 2024	▾
06	VICTORY CAPITAL MANAGEMENT INC CIK 1040188 · View history	$331.89M 3,053,027 shares	0.32%	-253.31K(-7.70%)Reduced	SEC filing ↗ Nov 5, 2024	▾
07	WELLINGTON MANAGEMENT GROUP LLP CIK 902219 · View history	$248.38M 2,284,763 shares	0.04%	-1.26M(-35.50%)Reduced	SEC filing ↗ Nov 14, 2024	▾
08	NORDEA INVESTMENT MANAGEMENT AB CIK 1218210 · View history	$247.67M 2,287,058 shares	0.28%	+68.35K(+3.10%)Added	SEC filing ↗ Nov 5, 2024	▾
09	Invesco Ltd. CIK 914208 · View history	$241.83M 2,224,503 shares	0.05%	-213.56K(-8.80%)Reduced	SEC filing ↗ Nov 12, 2024	▾
10	STATE STREET CORP CIK 93751 · View history	$212.52M 1,954,881 shares	0.01%	+65.20K(+3.50%)Added	SEC filing ↗ Nov 14, 2024	▾
11	NEUBERGER BERMAN GROUP LLC CIK 1465109 · Amended · View history	$151.92M 1,397,487 shares	0.12%	+321.76K(+29.90%)Added	SEC filing ↗ Nov 14, 2024	▾
12	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$127.50M 1,172,517 shares	0.01%	+51.52K(+4.60%)Added	SEC filing ↗ Nov 12, 2024	▾
13	BARCLAYS PLC CIK 312069 · Amended · View history	$110.79M 1,019,134 shares	0.05%	+530.62K(+108.60%)Added	SEC filing ↗ Mar 31, 2026	▾
14	GOLDMAN SACHS GROUP INC CIK 886982 · View history	$100.89M 928,027 shares	0.02%	-86.56K(-8.50%)Reduced	SEC filing ↗ Nov 14, 2024	▾
15	BANK OF AMERICA CORP /DE/ CIK 70858 · Amended · View history	$95.30M 876,690 shares	0.01%	+231.87K(+36.00%)Added	SEC filing ↗ Nov 14, 2024	▾
16	PRINCIPAL FINANCIAL GROUP INC CIK 1126328 · Amended · View history	$91.06M 837,695 shares	0.05%	-56.59K(-6.30%)Reduced	SEC filing ↗ Oct 31, 2024	▾
17	JPMORGAN CHASE & CO CIK 19617 · Amended · View history	$89.09M 819,506 shares	0.01%	-783.50K(-48.90%)Reduced	SEC filing ↗ Dec 26, 2024	▾
18	Madison Asset Management, LLC CIK 1299351 · View history	$87.11M 801,348 shares	0.98%	+57.63K(+7.70%)Added	SEC filing ↗ Nov 12, 2024	▾
19	ROYCE & ASSOCIATES LP CIK 906304 · View history	$82.99M 763,394 shares	0.75%	-37.02K(-4.60%)Reduced	SEC filing ↗ Nov 6, 2024	▾
20	NORGES BANK CIK 1374170 · Amended · View history	$81.96M 753,895 shares	0.01%	+40.34K(+5.70%)Added	SEC filing ↗ Nov 13, 2024	▾

Showing 20 / 411 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

411

Cancelled or null records excluded

Disclosed shares

67,820,633

Not deduplicated across managers

Disclosed value

$7.37B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

MKS INC · Q3 2024

Explore all 411 reporting institutions.

This page includes 20 of 411 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.