MKSI Insider Trading

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Insider Trading History
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Insider Ownership Percentage: 0.46%

Insider Buying (Last 12 Months): $0.00

Insider Selling (Last 12 Months): $1,266,541.75

MKS Instruments Insider Trading History Chart

MKS Instruments Share Price & Price History

^$71.44

▼ -2.54 (-3.43%)

As of 04/29/2025 05:00 PM ET

Days: 30 | 90 | 365

MKS Instruments Insider Trading History

Transaction Date	Insider Name	Title	Buy/Sell	Number of Shares	Average Share Price	Total Transaction	Shares Held After Transaction
3/3/2025	Elizabeth Mora	Director	Sell	275	$92.46	$25,426.50	17,384
2/18/2025	Gerard G. Colella	Director	Sell	8,000	$104.53	$836,240.00	60,017
12/10/2024	Jacqueline F. Moloney	Director	Sell	300	$114.80	$34,440.00	9,983
12/2/2024	Elizabeth Mora	Director	Sell	275	$113.41	$31,187.75	17,659
10/1/2024	Jacqueline F. Moloney	Director	Sell	250	$108.90	$27,225.00	10,283
9/3/2024	Elizabeth Mora	Director	Sell	275	$115.97	$31,891.75	17,934
8/16/2024	John Edward Williams	EVP	Sell	1,800	$118.71	$213,678.00	13
8/1/2024	Jacqueline F. Moloney	Director	Sell	250	$123.46	$30,865.00	10,533
6/3/2024	Elizabeth Mora	Director	Sell	275	$129.41	$35,587.75	18,209
4/1/2024	Elizabeth Mora	Director	Sell	250	$133.00	$33,250.00	16,862
3/1/2024	Jacqueline F. Moloney	Director	Sell	250	$122.89	$30,722.50	9,161
3/1/2024	Kathleen Flaherty Burke	EVP	Sell	7,411	$122.89	$910,737.79	42,999
2/22/2024	Seth H. Bagshaw	CFO	Sell	32,865	$123.28	$4,051,597.20	1
2/9/2024	Gerard G. Colella	Director	Sell	10,000	$120.00	$1,200,000.00	68,017
1/22/2024	Gerard G. Colella	Director	Sell	10,000	$110.00	$1,100,000.00	78,017
1/2/2024	Elizabeth Mora	Director	Sell	250	$100.90	$25,225.00	17,112
12/1/2023	Jacqueline F. Moloney	Director	Sell	250	$82.23	$20,557.50	11,328
11/7/2023	David Philip Henry	EVP	Buy	2,500	$68.34	$170,850.00	11,073
10/2/2023	Elizabeth Mora	Director	Sell	250	$87.15	$21,787.50	17,362
9/6/2023	Seth H. Bagshaw	CFO	Sell	25,000	$97.30	$2,432,500.00	20,547
8/31/2023	Gerard G. Colella	Director	Sell	10,000	$100.01	$1,000,100.00	88,017
8/28/2023	Jacqueline F. Moloney	Director	Sell	250	$95.25	$23,812.50	11,578
8/7/2023	Kathleen Flaherty Burke	EVP	Sell	11,563	$101.23	$1,170,522.49	42,738
7/3/2023	Elizabeth Mora	Director	Sell	250	$108.49	$27,122.50	17,612
6/1/2023	Elizabeth Mora	Director	Sell	200	$97.16	$19,432.00	17,862
5/8/2023	Carlyle Partners Vi Cayman Hol	Major Shareholder	Sell	2,000,000	$86.12	$172,240,000.00	6,482,732
3/15/2023	Elizabeth Mora	Director	Sell	200	$86.67	$17,334.00	15,693
12/1/2022	Elizabeth Mora	Director	Sell	200	$83.86	$16,772.00	15,893
10/3/2022	Jacqueline F. Moloney	Director	Sell	225	$84.14	$18,931.50	10,134
8/1/2022	Peter Cannone III	Director	Buy	250	$120.06	$30,015.00	3,142

See Full Table

SEC Filings (Institutional Ownership Changes) for MKS Instruments (NASDAQ:MKSI)

99.79% of MKS Instruments stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

MKS Instruments Institutional Trading History

Reporting Date	Hedge Fund	Shares Held	Market Value	% of Portfolio	Quarterly Change in Shares	Ownership in Company
4/28/2025	Principal Financial Group Inc.	835,195	$66.94M	0.0%	-0.1%	1.238%
4/28/2025	Teacher Retirement System of Texas	9,838	$0.79M	0.0%	N/A	0.015%
4/28/2025	WCM Investment Management LLC	36,422	$2.97M	0.0%	+3.9%	0.054%
4/28/2025	ABLE Financial Group LLC	17,364	$1.39M	0.4%	+8.6%	0.026%
4/25/2025	Amalgamated Bank	30,811	$2.47M	0.0%	-4.1%	0.046%
4/25/2025	KBC Group NV	3,082	$0.25M	0.0%	-90.0%	0.005%
4/24/2025	Artemis Investment Management LLP	251,799	$20.18M	0.3%	+2.2%	0.373%
4/23/2025	Bessemer Group Inc.	134,073	$10.74M	0.0%	-8.6%	0.199%
4/22/2025	Stonegate Investment Group LLC	2,742	$0.22M	0.0%	+13.7%	0.004%
4/21/2025	Blue Trust Inc.	2,631	$0.21M	0.0%	+535.5%	0.004%
4/21/2025	State of Alaska Department of Revenue	7,881	$0.63M	0.0%	+2.7%	0.012%
4/17/2025	Janney Montgomery Scott LLC	11,973	$0.96M	0.0%	+33.7%	0.018%
4/17/2025	Trust Point Inc.	3,204	$0.26M	0.0%	-28.2%	0.005%
4/16/2025	Wealth Enhancement Advisory Services LLC	3,892	$0.31M	0.0%	-9.9%	0.006%
4/15/2025	Fifth Third Bancorp	4,408	$0.35M	0.0%	+11.1%	0.007%
4/15/2025	SG Americas Securities LLC	3,517	$0.28M	0.0%	-9.4%	0.005%
4/14/2025	Yousif Capital Management LLC	22,941	$1.84M	0.0%	-5.2%	0.034%
4/14/2025	Harbor Capital Advisors Inc.	109,755	$8.80M	0.4%	-5.0%	0.163%
4/14/2025	Washington Capital Management Inc.	7,500	$0.60M	0.5%	N/A	0.011%
4/8/2025	Rhumbline Advisers	187,807	$15.05M	0.0%	+0.8%	0.278%
4/8/2025	Parallel Advisors LLC	581	$47K	0.0%	+89.3%	0.001%
4/7/2025	Summit Global Investments	5,914	$0.47M	0.0%	-50.8%	0.009%
4/7/2025	GAMMA Investing LLC	95,298	$7.64M	0.0%	+8,326.0%	0.141%
3/18/2025	California State Teachers Retirement System	62,930	$6.57M	0.0%	-1.5%	0.093%
3/17/2025	Wealth Enhancement Advisory Services LLC	4,320	$0.45M	0.0%	-11.0%	0.006%
3/5/2025	Phocas Financial Corp.	31,960	$3.34M	0.4%	-0.8%	0.047%
2/27/2025	ABLE Financial Group LLC	15,991	$1.67M	0.5%	N/A	0.024%
2/19/2025	Public Employees Retirement System of Ohio	39,464	$4.12M	0.0%	+62.5%	0.059%
2/18/2025	Hudson Value Partners LLC	4,169	$0.44M	0.2%	-82.1%	0.006%
2/18/2025	GTS Securities LLC	9,357	$0.98M	0.0%	+41.5%	0.014%
2/18/2025	PharVision Advisers LLC	2,500	$0.26M	0.2%	N/A	0.004%
2/17/2025	UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	258,251	$26.96M	0.0%	+20.6%	0.384%
2/17/2025	Williams Jones Wealth Management LLC.	10,782	$1.13M	0.0%	-19.0%	0.016%
2/17/2025	Twinbeech Capital LP	54,153	$5.65M	0.1%	-67.2%	0.080%
2/17/2025	Two Sigma Investments LP	42,200	$4.41M	0.0%	N/A	0.063%
2/17/2025	Tidal Investments LLC	19,535	$2.04M	0.0%	-38.7%	0.029%
2/17/2025	Systematic Financial Management LP	219,678	$22.93M	0.6%	+10.5%	0.326%
2/17/2025	Shellback Capital LP	53,432	$5.58M	0.4%	-29.9%	0.079%
2/17/2025	Shapiro Capital Management LLC	461,995	$48.23M	1.6%	N/A	0.686%
2/17/2025	Sherbrooke Park Advisers LLC	5,047	$0.53M	0.2%	-62.3%	0.007%
2/17/2025	Silvercrest Asset Management Group LLC	259,831	$27.12M	0.2%	+4.7%	0.386%
2/17/2025	Royal Bank of Canada	409,341	$42.73M	0.0%	+2.3%	0.608%
2/17/2025	Rafferty Asset Management LLC	576,566	$60.19M	0.2%	-2.2%	0.857%
2/17/2025	Point72 Asset Management L.P.	321,542	$33.57M	0.1%	+86.5%	0.478%
2/17/2025	Point72 Hong Kong Ltd	123,689	$12.91M	0.8%	+10.0%	0.184%
2/17/2025	ProShare Advisors LLC	11,943	$1.25M	0.0%	+1.0%	0.018%
2/17/2025	Quantinno Capital Management LP	20,734	$2.16M	0.0%	+196.4%	0.031%
2/17/2025	Main Management ETF Advisors LLC	12,816	$1.34M	0.1%	-8.2%	0.019%
2/17/2025	Man Group plc	31,432	$3.28M	0.0%	+274.3%	0.047%
2/17/2025	Nissay Asset Management Corp Japan ADV	37,156	$3.95M	0.0%	-4.0%	0.055%
2/17/2025	Nomura Holdings Inc.	419,347	$43.78M	0.1%	+5.3%	0.623%
2/17/2025	Nuveen Asset Management LLC	140,597	$14.68M	0.0%	-3.0%	0.209%
2/17/2025	Needham Investment Management LLC	129,000	$13.47M	1.0%	+3.6%	0.192%
2/17/2025	Millennium Management LLC	234,795	$24.51M	0.0%	+10.1%	0.349%
2/17/2025	Lazard Asset Management LLC	61,501	$6.42M	0.0%	-6.8%	0.091%
2/17/2025	Jefferies Financial Group Inc.	111,946	$11.69M	0.1%	+766.4%	0.166%
2/17/2025	Gotham Asset Management LLC	114,786	$11.98M	0.1%	-13.8%	0.171%
2/17/2025	Graham Capital Management L.P.	9,110	$0.95M	0.0%	+39.0%	0.014%
2/17/2025	Ellevest Inc.	8,633	$0.90M	0.1%	+7.3%	0.013%
2/17/2025	Ethic Inc.	16,667	$1.74M	0.0%	+68.6%	0.025%
2/17/2025	Expect Equity LLC	32,780	$3.42M	3.6%	N/A	0.049%
2/17/2025	Frontier Capital Management Co. LLC	363,428	$37.94M	0.4%	+1.6%	0.540%
2/17/2025	Deutsche Bank AG	131,006	$13.68M	0.0%	-1.1%	0.195%
2/17/2025	D. E. Shaw & Co. Inc.	367,437	$38.36M	0.0%	+158.5%	0.546%
2/17/2025	Concentric Capital Strategies LP	85,033	$8.88M	0.4%	N/A	0.126%
2/17/2025	Crestline Management LP	78,938	$8.24M	0.3%	+85.1%	0.117%
2/17/2025	Cubist Systematic Strategies LLC	33,327	$3.48M	0.0%	-62.6%	0.050%
2/17/2025	Cetera Investment Advisers	23,439	$2.45M	0.0%	+49.9%	0.035%
2/17/2025	Centiva Capital LP	2,723	$0.28M	0.0%	-90.6%	0.004%
2/17/2025	Bridgefront Capital LLC	4,206	$0.44M	0.1%	+70.2%	0.006%
2/17/2025	Capstone Investment Advisors LLC	32,500	$3.39M	0.0%	+48.3%	0.048%
2/17/2025	Captrust Financial Advisors	2,791	$0.29M	0.0%	-15.7%	0.004%
2/17/2025	Balyasny Asset Management L.P.	99,808	$10.42M	0.0%	-69.2%	0.148%
2/17/2025	Bayesian Capital Management LP	8,700	$0.91M	0.1%	-6.5%	0.013%
2/17/2025	Bank of America Corp DE	707,060	$73.81M	0.0%	-19.3%	1.051%
2/17/2025	BNP Paribas Financial Markets	92,932	$9.70M	0.0%	+26.1%	0.138%
2/17/2025	Ameriprise Financial Inc.	190,128	$19.85M	0.0%	+7.3%	0.283%
2/17/2025	AXA S.A.	33,279	$3.47M	0.0%	+141.9%	0.049%
2/14/2025	Mercer Global Advisors Inc. ADV	4,911	$0.51M	0.0%	+114.7%	0.007%
2/14/2025	Comerica Bank	25,873	$2.70M	0.0%	+9.8%	0.038%
2/14/2025	Schonfeld Strategic Advisors LLC	20,411	$2.13M	0.0%	+54.0%	0.030%
2/14/2025	Leith Wheeler Investment Counsel Ltd.	72,283	$7.55M	0.5%	-3.4%	0.107%
2/14/2025	AQR Capital Management LLC	58,808	$6.14M	0.0%	-56.4%	0.087%
2/14/2025	Northern Trust Corp	608,382	$63.51M	0.0%	+20.4%	0.904%
2/14/2025	The Manufacturers Life Insurance Company	491,497	$51.31M	0.0%	+33.4%	0.730%
2/14/2025	Quarry LP	787	$82K	0.0%	+1,330.9%	0.001%
2/14/2025	Aquatic Capital Management LLC	23,283	$2.43M	0.1%	+40.3%	0.035%
2/14/2025	Coldstream Capital Management Inc.	4,521	$0.47M	0.0%	-4.2%	0.007%
2/14/2025	Two Sigma Securities LLC	3,486	$0.36M	0.0%	-72.0%	0.005%
2/14/2025	Voya Investment Management LLC	18,098	$1.89M	0.0%	-49.9%	0.027%
2/14/2025	Hood River Capital Management LLC	32,826	$3.43M	0.1%	+5.2%	0.049%
2/14/2025	Pinebridge Investments L.P.	38,669	$4.04M	0.0%	+91.3%	0.057%
2/14/2025	Price T Rowe Associates Inc. MD	3,341,428	$348.81M	0.0%	-21.9%	4.965%
2/14/2025	Hsbc Holdings PLC	4,724	$0.49M	0.0%	N/A	0.007%
2/14/2025	Stifel Financial Corp	62,009	$6.47M	0.0%	+3.8%	0.092%
2/14/2025	State of Tennessee Department of Treasury	33,507	$3.50M	0.0%	-2.7%	0.050%
2/14/2025	Tower Research Capital LLC TRC	11,366	$1.19M	0.0%	-27.4%	0.017%
2/14/2025	Teachers Retirement System of The State of Kentucky	33,541	$3.50M	0.0%	-3.0%	0.050%
2/14/2025	MetLife Investment Management LLC	38,103	$3.98M	0.0%	+9.0%	0.057%
2/14/2025	Natixis	17,204	$1.80M	0.0%	+25.5%	0.026%

Data available starting January 2016

See Full Table

MKS Instruments, Inc. provides foundational technology solutions to semiconductor manufacturing, electronics and packaging, and specialty industrial applications in the United States, Germany, China, South Korea, and internationally. It operates through Vacuum Solutions Division (VSD), Photonics Solutions Division (PSD), and Material Solutions Division (MSD) segments. The VSD segment provides foundational technology solutions, including pressure measurement and control, flow measurement and control, gas and vapor delivery, gas composition analysis, electronic control technology, reactive gas generation and delivery, power generation and delivery, and vacuum technology. The PSD segment offers range of solutions, which include lasers, beam measurement and profiling, precision motion control, vibration isolation systems, photonics instruments, temperature sensing, opto-mechanical components, optical elements, systems for flexible PCB laser processing, and laser-based systems, as well as high density interconnect PCB and package manufacturing. The MSD segment develops, process, and manufactures technologies comprising advanced surface modification, electroless and electrolytic plating, and surface finishing for chemistry, equipment, software, and services markets, as well as high-technology applications. In addition, the company sells its products and services through direct sales, network of independent distributors, and sales representatives, as well as websites, including product catalogs. The company was incorporated in 1961 and is headquartered in Andover, Massachusetts.

Today's Range

Now: $71.44

$71.35

$73.46

50 Day Range

MA: $79.28

$58.78

$107.85

52 Week Range

Now: $71.44

$54.84

$147.40

Volume

1,443,370 shs

Average Volume

1,037,968 shs

Market Capitalization

$4.82 billion

P/E Ratio

25.51

Dividend Yield

1.19%

Beta

1.81

Who are the company insiders with the largest holdings of MKS Instruments?: MKS Instruments' top insider investors include:
Carlyle Partners Vi Cayman Hol (Major Shareholder)
Gerard G Colella (Director)
Kathleen Flaherty Burke (EVP)
Seth H Bagshaw (CFO)
Elizabeth Mora (Director)
Jacqueline F Moloney (Director)
David Philip Henry (EVP)
John Edward Williams (EVP)
Learn More about top insider investors at MKS Instruments.
Who are the major institutional investors of MKS Instruments?: MKS Instruments' top institutional shareholders include:
Principal Financial Group Inc. — 1.24%
Artemis Investment Management LLP — 0.37%
Rhumbline Advisers — 0.28%
Bessemer Group Inc. — 0.20%
Harbor Capital Advisors Inc. — 0.16%
GAMMA Investing LLC — 0.14%
Learn More about top institutional investors of MKS Instruments stock.
Which major investors are selling MKS Instruments stock?: During the last quarter, MKSI stock was sold by these institutional investors:
KBC Group NV
Bessemer Group Inc.
Summit Global Investments
Harbor Capital Advisors Inc.
Amalgamated Bank
Trust Point Inc.
Yousif Capital Management LLC
Principal Financial Group Inc.
Within the previous year, company insiders that have sold MKS Instruments company stock include:
Carlyle Partners Vi Cayman Hol (Major Shareholder)
Gerard G Colella (Director)
Kathleen Flaherty Burke (EVP)
Seth H Bagshaw (CFO)
Learn More investors selling MKS Instruments stock.
Which major investors are buying MKS Instruments stock?: In the previous quarter, MKSI stock was bought by institutional investors including:
GAMMA Investing LLC
Teacher Retirement System of Texas
Washington Capital Management Inc.
Artemis Investment Management LLP
Janney Montgomery Scott LLC
Blue Trust Inc.
Rhumbline Advisers
ABLE Financial Group LLC