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MKSI
- As of 05/17/24, 10:29:07 AM: 123 Insider Transactions.
Sector:
Industrial Goods
Industry:
Diversified Machinery
Prev Close:
$44.88
Avg Vol(3m):
309,119
P/E:
22.60
EPS:
1.98
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Insider Transactions for MKSI
Buy/Sell*
Filed Date
Subject
Symbol
Acquirer
Pct Owned
Details
B
2020-02-14 12:07:09.0
MKS INSTRUMENTS INC
MKSI
Capital International Investors
7.9%
view
B
2020-02-12 07:57:13.0
MKS INSTRUMENTS INC
MKSI
VANGUARD GROUP INC
9.31%
view
B
2020-02-05 12:16:27.0
MKS INSTRUMENTS INC
MKSI
BlackRock Inc
9.5%
view
B
2020-01-30 10:24:01.0
MKS INSTRUMENTS INC
MKSI
WELLINGTON MANAGEMENT GROUP LLP
7.03%
view
S
2019-02-12 09:47:37.0
MKS INSTRUMENTS INC
MKSI
WELLINGTON MANAGEMENT GROUP LLP
4.47%
view
B
2019-02-11 13:16:59.0
MKS INSTRUMENTS INC
MKSI
VANGUARD GROUP INC
9.14%
view
S
2019-02-06 15:04:44.0
MKS INSTRUMENTS INC
MKSI
BlackRock Inc
9.2%
view
B
2018-02-09 11:28:19.0
MKS INSTRUMENTS INC
MKSI
VANGUARD GROUP INC
8.66%
view
S
2018-02-09 09:47:32.0
MKS INSTRUMENTS INC
MKSI
DIMENSIONAL FUND ADVISORS LP
4.89%
view
S
2018-02-08 11:39:14.0
MKS INSTRUMENTS INC
MKSI
WELLINGTON MANAGEMENT GROUP LLP
5.14%
view
S
2018-01-23 14:16:37.0
MKS INSTRUMENTS INC
MKSI
BlackRock Inc
11.0%
view
S
2017-10-10 10:07:02.0
MKS INSTRUMENTS INC
MKSI
WELLINGTON MANAGEMENT GROUP LLP
5.27%
view
B
2017-02-10 11:14:48.0
MKS INSTRUMENTS INC
MKSI
WELLINGTON MANAGEMENT GROUP LLP
10.46%
view
B
2017-02-10 09:24:43.0
MKS INSTRUMENTS INC
MKSI
VANGUARD GROUP INC
8.37%
view
B
2017-02-09 10:44:23.0
MKS INSTRUMENTS INC
MKSI
WELLINGTON MANAGEMENT GROUP LLP
9.97%
view
B
2017-02-09 08:54:57.0
MKS INSTRUMENTS INC
MKSI
DIMENSIONAL FUND ADVISORS LP
7.89%
view
S
2017-02-01 13:01:02.0
MKS INSTRUMENTS INC
MKSI
ROYCE & ASSOCIATES LP
4.35%
view
B
2017-01-12 17:08:50.0
MKS INSTRUMENTS INC
MKSI
BlackRock Inc
11.5%
view
B
2016-10-07 16:13:48.0
MKS INSTRUMENTS INC
MKSI
BlackRock Inc
10.3%
view
B
2016-02-10 09:20:10.0
MKS INSTRUMENTS INC
MKSI
VANGUARD GROUP INC
7.43%
view
B
2016-02-09 16:22:31.0
MKS INSTRUMENTS INC
MKSI
DIMENSIONAL FUND ADVISORS LP
7.61%
view
B
2016-01-26 16:40:23.0
MKS INSTRUMENTS INC
MKSI
BlackRock Inc
9.3%
view
S
2016-01-19 14:23:05.0
MKS INSTRUMENTS INC
MKSI
ROYCE & ASSOCIATES LLC
9.13%
view
B
2015-02-11 10:07:48.0
MKS INSTRUMENTS INC
MKSI
VANGUARD GROUP INC
6.6%
view
B
2015-02-05 09:31:19.0
MKS INSTRUMENTS INC
MKSI
DIMENSIONAL FUND ADVISORS LP
6.81%
view
B
2015-01-22 14:24:34.0
MKS INSTRUMENTS INC
MKSI
BlackRock Inc
8.7%
view
S
2015-01-13 15:09:46.0
MKS INSTRUMENTS INC
MKSI
ROYCE & ASSOCIATES LLC
12.7%
view
B
2014-02-11 12:47:59.0
MKS INSTRUMENTS INC
MKSI
VANGUARD GROUP INC
6.47%
view
B
2014-02-10 16:29:20.0
MKS INSTRUMENTS INC
MKSI
DIMENSIONAL FUND ADVISORS LP
6.3%
view
S
2014-02-05 13:05:36.0
MKS INSTRUMENTS INC
MKSI
ROYCE & ASSOCIATES LLC
14.91%
view
B
2014-01-29 21:44:47.0
MKS INSTRUMENTS INC
MKSI
BlackRock Inc
8.7%
view
S
2014-01-16 15:52:03.0
MKS INSTRUMENTS INC
MKSI
KORNITZER CAPITAL MANAGEMENT INC
0.0%
view
B
2014-01-13 12:11:48.0
MKS INSTRUMENTS INC
MKSI
ROYCE & ASSOCIATES LLC
15.0%
view
B
2013-02-12 11:01:25.0
MKS INSTRUMENTS INC
MKSI
VANGUARD GROUP INC
5.88%
view
S
2013-02-11 17:15:00.0
MKS INSTRUMENTS INC
MKSI
DIMENSIONAL FUND ADVISORS LP
5.68%
view
S
2013-02-07 18:51:36.0
MKS INSTRUMENTS INC
MKSI
BlackRock Inc
7.74%
view
S
2013-01-24 11:07:20.0
MKS INSTRUMENTS INC
MKSI
KORNITZER CAPITAL MANAGEMENT INC
5.17%
view
S
2013-01-14 14:31:22.0
MKS INSTRUMENTS INC
MKSI
ROYCE & ASSOCIATES LLC
13.4%
view
S
2012-02-14 08:30:23.0
MKS INSTRUMENTS INC
MKSI
DIMENSIONAL FUND ADVISORS LP
6.37%
view
S
2012-02-10 08:15:39.0
MKS INSTRUMENTS INC
MKSI
BlackRock Inc
8.1%
view
B
2012-02-10 07:35:06.0
MKS INSTRUMENTS INC
MKSI
VANGUARD GROUP INC
5.24%
view
S
2012-01-20 15:38:17.0
MKS INSTRUMENTS INC
MKSI
KORNITZER CAPITAL MANAGEMENT INC
6.27%
view
B
2012-01-18 15:18:32.0
MKS INSTRUMENTS INC
MKSI
ROYCE & ASSOCIATES LLC
14.25%
view
S
2011-02-11 14:19:03.0
MKS INSTRUMENTS INC
MKSI
DIMENSIONAL FUND ADVISORS LP
6.97%
view
S
2011-02-11 11:54:40.0
MKS INSTRUMENTS INC
MKSI
BERTUCCI CLAIRE R
2.7%
view
S
2011-02-11 11:54:23.0
MKS INSTRUMENTS INC
MKSI
BERTUCCI JOHN R
2.7%
view
B
2011-02-07 13:57:28.0
MKS INSTRUMENTS INC
MKSI
BlackRock Inc
8.78%
view
B
2011-01-21 10:16:30.0
MKS INSTRUMENTS INC
MKSI
KORNITZER CAPITAL MANAGEMENT INC
9.75%
view
S
2011-01-14 13:36:38.0
MKS INSTRUMENTS INC
MKSI
ROYCE & ASSOCIATES LLC
14.16%
view
S
2010-02-16 15:10:00.0
MKS INSTRUMENTS INC
MKSI
BERTUCCI CLAIRE R
6.2%
view
S
2010-02-16 15:07:30.0
MKS INSTRUMENTS INC
MKSI
BERTUCCI JOHN R
6.2%
view
S
2010-02-08 10:42:31.0
MKS INSTRUMENTS INC
MKSI
DIMENSIONAL FUND ADVISORS LP
8.13%
view
B
2010-01-29 14:57:35.0
MKS INSTRUMENTS INC
MKSI
BlackRock Inc
8.41%
view
S
2010-01-25 15:55:21.0
MKS INSTRUMENTS INC
MKSI
ROYCE & ASSOCIATES LLC
14.68%
view
B
2010-01-22 14:58:12.0
MKS INSTRUMENTS INC
MKSI
KORNITZER CAPITAL MANAGEMENT INC
9.1%
view
B
2009-02-09 12:56:19.0
MKS INSTRUMENTS INC
MKSI
DIMENSIONAL FUND ADVISORS INC
8.64%
view
B
2009-02-05 13:31:48.0
MKS INSTRUMENTS INC
MKSI
BARCLAYS GLOBAL INVESTORS NA
4.38%
view
B
2009-01-26 15:11:30.0
MKS INSTRUMENTS INC
MKSI
ROYCE & ASSOCIATES LLC
15.37%
view
B
2009-01-09 16:31:33.0
MKS INSTRUMENTS INC
MKSI
KORNITZER CAPITAL MANAGEMENT INC
6.33%
view
B
2008-02-19 17:16:38.0
MKS INSTRUMENTS INC
MKSI
KORNITZER CAPITAL MANAGEMENT INC
5.57%
view
S
2008-02-07 12:00:28.0
MKS INSTRUMENTS INC
MKSI
BERTUCCI JOHN R
8.5%
view
S
2008-02-07 11:56:23.0
MKS INSTRUMENTS INC
MKSI
BERTUCCI CLAIRE R
8.5%
view
B
2008-02-06 10:55:14.0
MKS INSTRUMENTS INC
MKSI
DIMENSIONAL FUND ADVISORS INC
7.71%
view
S
2008-02-05 17:29:24.0
MKS INSTRUMENTS INC
MKSI
BARCLAYS GLOBAL INVESTORS NA
2.76%
view
B
2008-01-30 12:39:00.0
MKS INSTRUMENTS INC
MKSI
ROYCE & ASSOCIATES LLC
14.46%
view
S
2007-10-10 13:12:41.0
MKS INSTRUMENTS INC
MKSI
FMR LLC
n/a
view
B
2007-09-07 13:53:11.0
MKS INSTRUMENTS INC
MKSI
ROYCE & ASSOCIATES LLC
11.1%
view
S
2007-02-14 16:56:40.0
MKS INSTRUMENTS INC
MKSI
FMR CORP
n/a
view
S
2007-02-13 10:27:48.0
MKS INSTRUMENTS INC
MKSI
PRICE T ROWE ASSOCIATES INC
2.1%
view
S
2007-02-12 11:58:59.0
MKS INSTRUMENTS INC
MKSI
BERTUCCI JOHN R
11.7%
view
S
2007-02-12 11:58:27.0
MKS INSTRUMENTS INC
MKSI
BERTUCCI CLAIRE R
11.7%
view
S
2007-02-08 19:39:38.0
MKS INSTRUMENTS INC
MKSI
DIMENSIONAL FUND ADVISORS INC
6.62%
view
B
2007-02-01 20:24:52.0
MKS INSTRUMENTS INC
MKSI
DIMENSIONAL FUND ADVISORS INC
6.62%
view
B
2007-01-23 16:27:54.0
MKS INSTRUMENTS INC
MKSI
BARCLAYS GLOBAL INVESTORS NA
4.16%
view
S
2007-01-17 16:03:17.0
MKS INSTRUMENTS INC
MKSI
EMERSON ELECTRIC CO
4.9%
view
S
2006-12-22 16:03:19.0
MKS INSTRUMENTS INC
MKSI
BERTUCCI CLAIRE R
11.7%
view
B
2006-12-22 16:00:29.0
MKS INSTRUMENTS INC
MKSI
BERTUCCI JOHN R
11.7%
view
S
2006-12-20 15:22:54.0
MKS INSTRUMENTS INC
MKSI
EMERSON ELECTRIC CO
1.26%
view
B
2020-06-10 10:13:21.0
AtriCure
ARTC
FMR LLC
11.2%
view
S
2020-04-10 14:00:42.0
AtriCure
ARTC
PRICE T ROWE ASSOCIATES INC
4.5%
view
S
2020-02-11 16:44:13.0
AtriCure
ARTC
VANGUARD GROUP INC
14.994%
view
S
2020-02-05 11:25:39.0
AtriCure
ARTC
BlackRock Inc
8.4%
view
B
2019-02-14 13:49:38.0
AtriCure
ARTC
PRICE T ROWE ASSOCIATES INC
5.6%
view
S
2019-02-13 11:46:18.0
AtriCure
ARTC
WELLINGTON MANAGEMENT GROUP LLP
7.08%
view
S
2018-11-13 08:07:34.0
AtriCure
ARTC
WELLINGTON MANAGEMENT GROUP LLP
7.51%
view
B
2018-02-14 13:24:55.0
AtriCure
ARTC
Hudson Executive Capital LP
6.0%
view
B
2018-02-13 09:33:24.0
AtriCure
ARTC
FMR LLC
14.996%
view
B
2018-02-08 11:22:40.0
AtriCure
ARTC
WELLINGTON MANAGEMENT GROUP LLP
10.99%
view
B
2017-02-14 10:48:07.0
AtriCure
ARTC
Consonance Capital Management LP
8.02%
view
B
2017-01-30 11:29:29.0
AtriCure
ARTC
Hudson Executive Capital LP
6.0%
view
B
2016-11-02 18:02:59.0
AtriCure
ARTC
WELLINGTON MANAGEMENT GROUP LLP
10.06%
view
S
2016-04-11 09:57:07.0
AtriCure
ARTC
FMR LLC
4.06%
view
B
2016-02-12 08:54:24.0
AtriCure
ARTC
FMR LLC
4.0%
view
S
2016-02-11 11:00:55.0
AtriCure
ARTC
THOMSON HORSTMANN & BRYANT INC
0.0%
view
B
2015-11-10 16:06:29.0
AtriCure
ARTC
ADAGE CAPITAL PARTNERS GP LLC
7.92%
view
B
2015-02-12 10:38:16.0
AtriCure
ARTC
BlackRock Inc
7.0%
view
B
2015-01-22 14:53:26.0
AtriCure
ARTC
THOMSON HORSTMANN & BRYANT INC
3.19%
view
B
2014-02-13 17:20:04.0
AtriCure
ARTC
CAMDEN PARTNERS STRATEGIC II LLC
5.77%
view
B
2014-01-28 10:57:22.0
AtriCure
ARTC
BlackRock Inc
5.1%
view
S
2013-06-03 15:53:55.0
AtriCure
ARTC
Discovery Group I
4.8%
view
S
2013-02-15 17:19:39.0
AtriCure
ARTC
Discovery Group I
8.6%
view
S
2013-02-11 14:41:47.0
AtriCure
ARTC
US VENTURE PARTNERS VIII L P
0.0%
view
S
2012-12-19 14:56:23.0
AtriCure
ARTC
Drachman David J
3.12%
view
B
2012-03-12 20:46:39.0
AtriCure
ARTC
WASATCH ADVISORS INC
n/a
view
B
2012-02-09 12:18:25.0
AtriCure
ARTC
Drachman David J
5.4%
view
S
2011-02-14 14:21:08.0
AtriCure
ARTC
WASATCH ADVISORS INC
3.83%
view
B
2011-02-08 14:23:17.0
AtriCure
ARTC
Hooven Michael D
n/a
view
B
2010-09-27 17:26:06.0
AtriCure
ATRC
DISCOVERY EQUITY PARTNERS
5.7%
view
S
2010-02-16 17:27:23.0
AtriCure
ATRC
CAMDEN PARTNERS STRATEGIC II LLC
n/a
view
S
2010-02-16 08:54:29.0
AtriCure
ATRC
Hooven Michael D
5.3%
view
S
2009-02-17 09:29:23.0
AtriCure
ATRC
Hooven Michael D
5.6%
view
S
2009-02-12 19:55:58.0
AtriCure
ATRC
WELDON NORMAN R
4.6%
view
B
2009-02-09 14:33:08.0
AtriCure
ATRC
HUGHES DONALD W
7.3%
view
S
2008-02-13 18:45:56.0
AtriCure
ATRC
Hooven Michael D
5.7%
view
S
2008-02-11 17:40:56.0
AtriCure
ATRC
Capital Research Global Investors
4.4%
view
B
2008-01-30 18:46:02.0
AtriCure
ATRC
TimesSquare Capital Management
5.78%
view
S
2007-02-13 15:24:01.0
AtriCure
ATRC
WELDON NORMAN R
6.3%
view
S
2007-02-09 09:56:50.0
AtriCure
ATRC
TimesSquare Capital Management
18.5%
view
S
2007-01-23 17:27:11.0
AtriCure
ATRC
Kairos Partners III Limited Partnership
6.09%
view
B
2006-05-08 00:00:00.0
AtriCure
ATRC
Kairos Partners III Limited Partnership
7.67%
view
B
2006-02-14 00:00:00.0
AtriCure
ATRC
WELDON NORMAN R
5.6%
view
B
2006-02-13 00:00:00.0
AtriCure
ATRC
MASSACHUSETTS FINANCIAL SERVICES CO
7.8%
view
B
2006-02-10 00:00:00.0
AtriCure
ATRC
TimesSquare Capital Management
7.6%
view
* Institutions do not report transaction buy/sell types directly. To help members better understand the transactions, this column is filled by InsiderCow's best-effort interpretations.