MKS Ownership | Who Owns MKS?

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MKS Ownership Summary

MKS is owned by 19.02% institutional investors, 0.58% insiders, and 80.40% retail investors. Vanguard group is the largest institutional shareholder, holding 11.13% of MKSI shares. American Funds SMALLCAP World A is the top mutual fund, with 4.45% of its assets in MKS shares.

MKSI Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	MKS	19.02%	0.58%	80.40%
Sector	Technology Stocks	34.35%	13.05%	52.60%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Vanguard group	7.49M	11.13%	$1.20B
Blackrock	6.61M	9.87%	$863.50M
Blackrock funding, inc. /de	6.14M	9.12%	$980.99M
Price t rowe associates inc /md/	3.63M	5.41%	$449.66M
Victory capital management	3.58M	5.33%	$443.37M
Fmr	3.44M	5.12%	$426.17M
Capital investors	3.24M	4.81%	$517.63M
Wellington management group llp	3.01M	4.48%	$373.02M
Invesco	2.38M	3.55%	$294.99M
State street	2.04M	3.04%	$252.98M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Value management	297.71K	7.96%	$47.58M
Expect equity	31.49K	3.81%	$3.90M
Harber asset management	52.54K	3.52%	$8.40M
Polaris capital management	265.10K	3.51%	$42.36M
Harvey partners	289.00K	3.18%	$35.77M
Blue grotto capital	211.85K	3.04%	$26.22M
Channing capital management	744.16K	2.43%	$92.10M
Divisar capital management	62.00K	2.09%	$7.67M
Madison asset management	921.45K	1.69%	$147.25M
Shapiro capital management	309.05K	1.66%	$38.25M

Top Buyers

Holder	Shares	% Assets	Change
Point72 asset management	1.01M	0.21%	1.01M
Madison investment advisors	933.94K	1.10%	933.94K
Norges bank	922.74K	0.02%	922.74K
Jpmorgan chase	1.55M	0.02%	886.85K
Westfield capital management co lp	839.77K	0.56%	516.41K

Top Sellers

Holder	Shares	% Assets	Change
Nordea investment management ab	599.84K	0.08%	-996.60K
Rafferty asset management	-	-	-878.11K
Price t rowe associates inc /md/	3.63M	0.05%	-496.11K
Freestone grove partners lp	-	-	-413.76K
Capital research global investors	-	-	-387.15K

New Positions

Holder	Shares	% Assets	Change	Value
Madison investment advisors	933.94K	1.10%	933.94K	$97.49M
Norges bank	922.74K	0.02%	922.74K	$147.45M
Ceredex value advisors	200.13K	0.57%	200.13K	$24.77M
Mizuho markets cayman lp	175.00K	1.41%	175.00K	$27.96M
Delta global management lp	151.53K	1.37%	151.53K	$18.76M

Sold Out

Holder	Change
Crewe advisors	-1.00
Mendota financial group	-1.00
Tortoise investment management	-2.00
Greenline partners	-3.00
Activest wealth management	-3.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Dec 31, 2025	181	-60.13%	12,801,198	-82.22%	19	0.17%	108	-53.04%	40	-71.22%
Sep 30, 2025	192	-52.00%	18,973,653	-74.01%	28	0.24%	98	-56.83%	58	-53.97%
Jun 30, 2025	404	-0.98%	74,637,907	6.06%	111	1.02%	228	-	127	6.72%
Mar 31, 2025	10	-97.67%	1,910,894	-97.29%	2	0.03%	9	-96.25%	1	-99.19%
Dec 31, 2024	397	-6.15%	67,169,455	0.17%	99	1.01%	219	-10.25%	119	6.25%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
American Funds SMALLCAP World A	2.99M	4.45%	153.59K
Victory Sycamore Established Value R	2.58M	3.85%	285.00K
Sycamore Mid Cap Value Comp	2.29M	3.41%	2.23M
iShares Core S&P Mid-Cap ETF	2.18M	3.25%	-
Vanguard US Total Market Shares ETF	2.12M	3.15%	1.63K
Vanguard Total Stock Mkt Idx Inv	2.11M	3.15%	-52.06K
T. Rowe Price US Mid-Cap Value Equity	2.04M	3.04%	332.13K
T. Rowe Price Mid-Cap Value	2.04M	3.04%	-3.07K
Vanguard Small Cap Index	1.63M	2.43%	-9.36K
Fidelity Low-Priced Stock	1.33M	1.98%	-3.58K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Feb 24, 2026	Schreiner James Alan	EVP & COO	Sell	$1.05M
Feb 24, 2026	COLELLA GERALD G	-	Sell	$2.54M
Feb 20, 2026	COLELLA GERALD G	-	Sell	$2.53M
Feb 20, 2026	CANNONE PETER III	-	Sell	$322.57K
Feb 20, 2026	Taranto Eric Robert	EVP & GM, VSD	Sell	$359.62K

Insider Transactions Trends

Date	Buy	Sell
2026 Q1	-	15
2025 Q4	-	3
2025 Q3	-	6
2025 Q2	-	1
2025 Q1	-	3

MKSI Ownership FAQ

Who owns the most shares of MKS?

MKS’s largest shareholders are Vanguard group (7.49M shares, 11.13%), Blackrock (6.61M shares, 9.87%), and Blackrock funding, inc. /de (6.14M shares, 9.12%). Together, they hold 30.12% of MKS’s total shares outstanding.

Does Blackrock own MKS?

Yes, BlackRock owns 9.87% of MKS, totaling 6.61M shares as of Jun 2024. This represents 0.02% of BlackRock's total assets, with a market value of 863.5M$. In the last quarter, BlackRock increased its holdings by 201.24K shares, a 3.14% change.

Who is MKS’s biggest shareholder by percentage of total assets invested?

Value management is MKS’s biggest shareholder by percentage of total assets invested, with 7.96% of its assets in 297.71K MKS shares, valued at 47.58M$.

Who is the top mutual fund holder of MKS shares?

American Funds SMALLCAP World A is the top mutual fund holder of MKS shares, with 4.45% of its total shares outstanding invested in 2.99M MKS shares.

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