What does CUSIP 55306N104 represent in this 13F holders report?

CUSIP 55306N104 is the security identifier for MKSI - MKS INC - Common Stock used to aggregate holder disclosures.

How many institutions held MKSI - MKS INC - Common Stock in Q4 2017?

354 institutional investors reported MKSI - MKS INC - Common Stock for Q4 2017. Use the holders table for investor-level position and value details.

MKS INC - Common Stock (MKSI)

CUSIP: 55306N104

Q4 2017 13F Holders as of 31 Dec 2017

Type / Class: Equity / Common Stock
Shares outstanding: 67,167,585
Total 13F shares: 51,372,716
Share change: -1,322,500
Total reported value: $4,854,068,641
Put/Call ratio: 140%
Price per share: $94.50
Number of holders: 354
Value change: -$126,172,442
Number of buys: 169
Number of sells: 182

Quarterly Holders Quick Answers

What is CUSIP 55306N104?
CUSIP 55306N104 identifies MKSI - MKS INC - Common Stock in SEC institutional holdings data.

Need full ownership history?
Open the full security ownership history page.

Next holder-history checks

These links keep the next click tied to holder verification, nearby quarters, or outside-13F ownership context.

Back to full security ownership history for the broader multi-quarter picture.
Latest 13F filings for newly reported positions across managers.
Latest Schedule 13D/13G reports for ownership changes outside the 13F cadence.
SEC investors directory for manager drilldown.

Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q1 2018
Previous quarter: Q3 2017

Recent filing periods for CUSIP 55306N104:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Top shareholders of MKSI - MKS INC - Common Stock (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
BlackRock Finance, Inc.	13F	Company	10%	6,760,676	$638,546,000	—	30 Sep 2017	13F
VANGUARD GROUP INC	13F	Company	7.4%	5,000,443	$472,292,000	—	30 Sep 2017	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	4.6%	3,063,223	$289,320,000	—	30 Sep 2017	13F
WELLINGTON MANAGEMENT GROUP LLP	13F	Company	4.3%	2,861,397	$270,259,000	—	30 Sep 2017	13F
ROYCE & ASSOCIATES LP	13F	Company	2.5%	1,665,895	$157,344,000	—	30 Sep 2017	13F
SILVERCREST ASSET MANAGEMENT GROUP LLC	13F	Company	2.1%	1,394,440	$131,705,000	—	30 Sep 2017	13F
Neuberger Berman Group LLC	13F	Company	2%	1,352,458	$127,740,000	—	30 Sep 2017	13F
STATE STREET CORP	13F	Company	2%	1,332,439	$125,849,000	—	30 Sep 2017	13F
Invesco Ltd.	13F	Company	1.8%	1,184,804	$111,905,000	—	30 Sep 2017	13F
TimesSquare Capital Management, LLC	13F	Company	1.6%	1,071,835	$101,235,000	—	30 Sep 2017	13F
ROYAL BANK OF CANADA	13F	Company	1.5%	981,955	$92,746,000	—	30 Sep 2017	13F
Bank of New York Mellon Corp	13F	Company	1.4%	944,070	$89,166,000	—	30 Sep 2017	13F
Allianz Asset Management GmbH	13F	Company	1.3%	869,399	$82,115,000	—	30 Sep 2017	13F
OppenheimerFunds, Inc.	13F	Company	1.3%	867,934	$81,976,000	—	30 Sep 2017	13F
NORTHERN TRUST CORP	13F	Company	1.1%	738,524	$69,753,000	—	30 Sep 2017	13F
FRANKLIN RESOURCES INC	13F	Company	1%	687,546	$64,939,000	—	30 Sep 2017	13F
Fisher Asset Management, LLC	13F	Company	0.97%	652,419	$61,621,000	—	30 Sep 2017	13F
NORGES BANK	13F	Company	0.94%	629,984	$59,502,000	—	30 Sep 2017	13F
RENAISSANCE TECHNOLOGIES LLC	13F	Company	0.88%	593,252	$56,033,000	—	30 Sep 2017	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.86%	578,500	$54,639,000	—	30 Sep 2017	13F
PRINCIPAL FINANCIAL GROUP INC	13F	Company	0.85%	569,835	$53,822,000	—	30 Sep 2017	13F
VOYA INVESTMENT MANAGEMENT LLC	13F	Company	0.84%	560,968	$52,984,000	—	30 Sep 2017	13F
JPMORGAN CHASE & CO	13F	Company	0.78%	524,265	$49,308,000	—	30 Sep 2017	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	0.69%	466,389	$44,051,000	—	30 Sep 2017	13F
VICTORY CAPITAL MANAGEMENT INC	13F	Company	0.67%	452,489	$42,738,000	—	30 Sep 2017	13F
VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P.	13F	Company	0.66%	441,500	$41,700,000	—	30 Sep 2017	13F
NEUMEIER POMA INVESTMENT COUNSEL LLC	13F	Company	0.64%	430,025	$40,616,000	—	30 Sep 2017	13F
AMERIPRISE FINANCIAL INC	13F	Company	0.63%	422,076	$39,864,000	—	30 Sep 2017	13F
FIDUCIARY MANAGEMENT INC /WI/	13F	Company	0.62%	419,176	$39,591,000	—	30 Sep 2017	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	0.62%	414,525	$39,152,000	—	30 Sep 2017	13F
PICTET ASSET MANAGEMENT LTD	13F	Company	0.6%	400,235	$37,802,000	—	30 Sep 2017	13F
WELLS FARGO & COMPANY/MN	13F	Company	0.58%	388,432	$36,687,000	—	30 Sep 2017	13F
COLUMBUS CIRCLE INVESTORS	13F	Company	0.58%	388,137	$36,660,000	—	30 Sep 2017	13F
PRICE T ROWE ASSOCIATES INC /MD/	13F	Company	0.58%	386,882	$36,541,000	—	30 Sep 2017	13F
DEUTSCHE BANK AG\	13F	Company	0.57%	381,158	$35,997,000	—	30 Sep 2017	13F
Cortina Asset Management, LLC	13F	Company	0.56%	374,045	$35,329,000	—	30 Sep 2017	13F
PRUDENTIAL FINANCIAL INC	13F	Company	0.54%	360,782	$34,076,000	—	30 Sep 2017	13F
LOOMIS SAYLES & CO L P	13F	Company	0.5%	338,262	$31,949,000	—	30 Sep 2017	13F
VALUE HOLDINGS MANAGEMENT CO. LLC	13F	Company	0.49%	329,714	$31,141,000	—	30 Sep 2017	13F
WESTWOOD HOLDINGS GROUP INC	13F	Company	0.46%	306,037	$28,905,000	—	30 Sep 2017	13F
Nuveen Asset Management, LLC	13F	Company	0.45%	304,612	$28,771,000	—	30 Sep 2017	13F
GOLDMAN SACHS GROUP INC	13F	Company	0.41%	276,449	$26,111,000	—	30 Sep 2017	13F
ROTHSCHILD & CO ASSET MANAGEMENT US INC.	13F	Company	0.39%	261,435	$24,693,000	—	30 Sep 2017	13F
EAGLE ASSET MANAGEMENT INC	13F	Company	0.33%	221,105	$20,971,000	—	30 Sep 2017	13F
BANK OF AMERICA CORP /DE/	13F	Company	0.33%	219,523	$20,734,000	—	30 Sep 2017	13F
TIAA CREF INVESTMENT MANAGEMENT LLC	13F	Company	0.32%	214,591	$20,268,000	—	30 Sep 2017	13F
Robeco Institutional Asset Management B.V.	13F	Company	0.29%	196,444	$18,554,000	—	30 Sep 2017	13F
SYSTEMATIC FINANCIAL MANAGEMENT LP	13F	Company	0.29%	191,671	$18,103,000	—	30 Sep 2017	13F
LAZARD ASSET MANAGEMENT LLC	13F	Company	0.27%	181,560	$17,148,000	—	30 Sep 2017	13F
STATE OF WISCONSIN INVESTMENT BOARD	13F	Company	0.27%	181,100	$17,105,000	—	30 Sep 2017	13F

Institutional Holders of MKS INC - Common Stock (MKSI) as of Q4 2017

As of 31 Dec 2017, MKS INC - Common Stock (MKSI) was held by 354 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 51,372,716 shares. The largest 10 holders included BlackRock Inc., Vanguard Group Inc, WELLINGTON MANAGEMENT GROUP LLP, DIMENSIONAL FUND ADVISORS LP, STATE STREET CORP, ROYCE & ASSOCIATES LP, Neuberger Berman Group LLC, PRUDENTIAL FINANCIAL INC, TimesSquare Capital Management, LLC, and SILVERCREST ASSET MANAGEMENT GROUP LLC. This page lists 354 institutional shareholders reporting positions in this security for the Q4 2017 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q4 2017 vs Q3 2017 Across Filers

Q3 2017 holders

336

Q4 2017 holders

354

Holder diff

Investor	Q3 2017 Shares	Q4 2017 Shares	Share Diff	Share Chg %	Q3 2017 Value $	Q4 2017 Value $	Value Diff $	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.