MKS Inc

US · MKSI #997 by market cap Listed 1970

273.15 -8.26 -2.94%

Live - 5344 symbols - heartbeat 4s ago · 2026-10-08 07:43

Pre-market 265.78 -2.70%

After-hours 273.50 +0.13%

Overnight 271.00 -0.79%

Market cap: 18.47B
P/E (TTM): 43.50
P/B: 6.18
EPS: 4.37
Div yield: 0.34%
52W pos: 46%

Reader sentiment Are you bullish or bearish on MKSI?

Anonymous reader poll. Unscientific, not investment advice.

✦ Quant Ownership Signal how this is computed

Distributing

Total institutional ownership fell 2.1 percentage points.

Institutional ownership

Held by institutions: 104.61% -2.10pp
Institutions: 877
As of: 2026/Q3 vs. prior period

Ownership vs. money flow

Aligned

Institutions trimmed shares last reporting period, and the stock has seen net outflows in main-fund flow over the last 20 trading sessions - the two line up.

Institutional ownership changes are reported quarterly with a lag; fund-flow data is daily. Treat this as a directional cross-check, not a precise timing signal.

Holder types

Mutual Fund80.33%

Hedge Fund15.24%

Public Company3.57%

Government Pension Fund1.49%

Sovereign Wealth Fund1.42%

VC/PE Fund1.20%

Private Company0.64%

Individual/Insider0.50%

Insurance Company0.42%

Top holders as of 2026-06-30

BlackRock 10.25% · 6.93M sh

Invesco Ltd. 5.64% · 3.81M sh

Vanguard Portfolio Management, LLC 5.48% · 3.71M sh

Vanguard Capital Management, LLC 5.14% · 3.48M sh

Capital Research 4.85% · 3.28M sh

State Street Global Advisors 3.16% · 2.13M sh

Point72 Asset Management, L.P. 2.95% · 2.00M sh

T. Rowe Price Group, Inc. 2.90% · 1.96M sh

Aspex Management (HK) Limited 2.69% · 1.82M sh

J.P. Morgan Asset Management, Inc. 2.58% · 1.74M sh

Bar length is relative to the largest holder shown here, not to 100% of the company.

Insiders

50 filings tracked · 14 buys · 34 sells

Name	Role	Stake
John T. Lee	Chief Executive Officer	0.20%
Kathleen Burke	General Counsel	0.07%
Gerald Colella	Chairperson	0.04%
James Schreiner	Executive VP & COO of Materials Solutions Division	0.03%
Elizabeth Mora	Independent Director	0.03%
Rajeev Batra	Independent Director	0.02%
Eric Taranto	Executive VP & GM of Vacuum Solutions Division	0.02%
David Henry	Executive Vice President of Operations & Corporate Marketing	0.02%
Renee Donlan	Executive VP, General Counsel & Chief Compliance Officer	0.01%
Joseph Donahue	Independent Director	0.01%

Insider transactions most recent Form 4 filings

Date	Name	Role	Type	Shares	Price
2026-08-31	Elizabeth Mora	Independent Director	Automatic Disposition	-300	$250.96
2026-08-16	Renee Donlan	Executive VP, General Counsel & Chief Compliance Officer	Other Derivative Acquisition	+954	--
2026-08-13	John T. Lee	Chief Executive Officer	Automatic Disposition	-10,000	$302.01
2026-08-02	John Williams	Former VP & GM of Equipment & Solutions Division	Automatic Disposition	-457	$288.31
2026-06-11	James Schreiner	Executive VP & COO of Materials Solutions Division	Open Market Disposition	-3,500	$345.52–347.00
2026-06-09	James Schreiner	Executive VP & COO of Materials Solutions Division	Automatic Disposition	-781	$317.42
2026-06-04	Michelle McCarthy	Vice President	Automatic Disposition	-2,434	$315.23
2026-05-31	Elizabeth Mora	Independent Director	Automatic Disposition	-300	$318.02
2026-05-31	David Henry	Executive Vice President of Operations & Corporate Marketing	Open Market Disposition	-6,000	$314.43
2026-05-31	Renee Donlan	Executive VP, General Counsel & Chief Compliance Officer	Initial Statement of Beneficial	0	--
2026-05-26	Gerald Colella	Chairperson	Automatic Disposition	-20,000	$330.38–338.58
2026-05-26	Joseph Donahue	Independent Director	Open Market Disposition	-2,100	$327.95
2026-05-25	David Henry	Executive Vice President of Operations & Corporate Marketing	Automatic Disposition	-2,500	$330.50
2026-05-21	John T. Lee	Chief Executive Officer	Automatic Disposition	-10,000	$315.48
2026-05-21	Ramakumar Mayampurath	EVP, CFO & Treasurer	Automatic Disposition	-8,810	$315.48
2026-05-17	Peter Cannone	Independent Director	Open Market Disposition	-1,350	$303.40
2026-05-13	Jacqueline Moloney	Lead Independent Director	Open Market Disposition	-1,000	$312.20
2026-05-12	Jacqueline Moloney	Lead Independent Director	Open Market Disposition	-1,400	$318.99
2026-05-10	Kathleen Burke	General Counsel	Open Market Disposition	-4,355	$319.94
2026-05-10	Gerald Colella	Chairperson	Other Acquisition	+781	--

Form 4 filings, most recent per company. "Other Derivative Acquisition" rows are mostly RSU/option vesting, not open-market buying - the Type column says which.

Quote time 2026-10-08 07:43:27 · For reference only, not investment advice and not tailored to your situation.