MKS INC

MKSINASDAQ

$279.15+7.91 (+2.92%)as of Oct 2, 2026

Legend

Insider buy

Insider sell

Congress buy

Congress sell

Hedge Funds
bought vs soldGreener markers show more buyers; redder markers show more sellers.

Company share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size.

Insider buy
Insider sell
Congress buy
Congress sell
Hedge Funds bought vs sold

Share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size. Greener fund markers mean more buyers.

Insider Buy
Insider Sell
Congress Buy
Congress Sell
Hedge funds bought vs sold
BuybackNo changeNet dilution

MKS INC price and activity chart data

Showing the 1Y range: Oct 2, 2025 to Oct 2, 2026. Price (+104.4%). 0 insider or congressional trades plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Largest institutional holders

13F · Q2 2026

Fund	% of company held	Value	% of portfolio	Quarterly activity
BlackRock, Inc.	10.25%	$3.08B	0.05%	Not reported
Invesco Ltd.	6.90%	$2.07B	0.16%	Not reported
Vanguard Portfolio Management LLC	5.48%	$1.65B	0.07%	Not reported
JPMorgan Chase & Co	4.99%	$1.4B	0.08%	Not reported
Vanguard Capital Management LLC	4.51%	$1.36B	0.03%	Not reported
State Street Corp	3.16%	$949M	0.03%	Not reported
Point72 Asset Management, L.P.	2.95%	$888M	0.98%	Not reported
Capital International Investors	2.83%	$852M	0.18%	Reduce 2.72%
Geode Capital Management, LLC	2.28%	$687M	0.04%	Not reported
FMR LLC	2.22%	$667M	0.03%	Not reported
Wellington Management Group LLP	2.09%	$630M	0.11%	Reduce 22.75%
Capital World Investors	2.02%	$608M	0.07%	Add 6.98%
Whale Rock Capital Management LLC	1.88%	$566M	4.54%	Reduce 2.71%
Neuberger Berman Group LLC	1.72%	$518M	0.34%	Not reported
Alkeon Capital Management LLC	1.59%	$477M	0.64%	New Not reported
Norges Bank	1.41%	$425M	0.04%	Not reported
Westfield Capital Management Co LP	1.37%	$413M	1.35%	Reduce 11.29%
Sachem Head Capital Management LP	1.20%	$361M	7.50%	New Not reported
Charles Schwab Investment Management Inc	1.20%	$359M	0.05%	Not reported
Citadel Advisors LLC	1.03%	$310M	0.04%	Not reported
Morgan Stanley	1.01%	$303M	0.02%	Not reported
Bank of New York Mellon Corp	0.97%	$293M	0.05%	Not reported
Millennium Management LLC	0.95%	$287M	0.10%	Not reported
AQR Capital Management LLC	0.94%	$280M	0.10%	Not reported
Victory Capital Management Inc	0.90%	$271M	0.15%	Not reported
Qube Research & Technologies Ltd	0.90%	$270M	0.25%	Not reported
FengHe Fund Management Pte. Ltd.	0.86%	$259M	24.54%	Add 27.47%
Northern Trust Corp	0.85%	$257M	0.03%	Not reported
Dimensional Fund Advisors LP	0.79%	$237M	0.04%	Not reported
Bank of America Corp	0.77%	$232M	0.01%	Not reported
Principal Financial Group Inc	0.70%	$211M	0.10%	Not reported
Vanguard Fiduciary Trust Co	0.63%	$190M	0.04%	Not reported
Goldman Sachs Group Inc	0.54%	$161M	0.01%	Not reported
Nuveen, LLC	0.53%	$161M	0.04%	Not reported
Raymond James Financial Inc	0.48%	$146M	0.04%	Not reported
UBS Group AG	0.48%	$143M	0.02%	Not reported
Summit Partners Public Asset Management, LLC	0.47%	$142M	2.50%	Add 13.33%
Madison Asset Management, LLC	0.47%	$141M	1.68%	Reduce 6.40%
Tremblant Capital Group	0.44%	$131M	3.77%	Reduce 10.43%
TOMS Capital Investment Management LP	0.43%	$130M	2.79%	New Not reported
Samlyn Capital, LLC	0.42%	$125M	2.04%	Reduce 43.25%
Alliancebernstein L.P.	0.41%	$63.4M	0.02%	Not reported
Manufacturers Life Insurance Company, the	0.39%	$118M	0.09%	Not reported
Royce & Associates LP	0.39%	$116M	0.94%	Not reported
Polar Capital Holdings Plc	0.39%	$116M	0.27%	Add 260.67%
Balyasny Asset Management L.P.	0.38%	$116M	0.14%	Not reported
Natixis Advisors, LLC	0.38%	$116M	0.13%	Add 12.14%
Jones Financial Companies LLLP	0.37%	$97.4M	0.04%	Not reported
Amundi	0.36%	$107M	0.03%	Not reported
Nordea Investment Management AB	0.34%	$103M	0.08%	Reduce 28.87%

50 of 728 holders

Activity score

Premium

100

WEAK

STRONG

Unlock

AI Activity Analysis

Premium

Coming soonAI reads of insider, institutional and company activity will appear here for Premium accounts.

Historical Activity Patterns

Premium

Historical Activity PatternsHistorical periods where multiple activity categories converged, with subsequent market performance shown for context.Unlock