Sei Investments CO Mks Instruments Inc Transaction History

Sei Investments CO

  • $89.6 Billion
  • Q3 2025

A detailed history of Sei Investments CO transactions in Mks Instruments Inc stock. As of the latest transaction made, Sei Investments CO holds 112,170 shares of MKSI stock, worth $16 Million. This represents 0.02% of its overall portfolio holdings.

Number of Shares
112,170
Previous 109,350 2.58%
Holding current value
$16 Million
Previous $10.9 Million 27.78%
% of portfolio
0.02%
Previous 0.01%

Shares

36 transactions
Quarter Operation Price Per share shares change shares Held SEC Form
Q3 2025

Nov 13, 2025
BUY
$89.62 - $129.92 $252,728 - $366,374
2,820 Added 2.58%
112,170 $13.9 Million
Q2 2025

Aug 14, 2025
SELL
$58.78 - $100.27 $2.1 Million - $3.58 Million
-35,753 Reduced 24.64%
109,350 $10.9 Million
Q1 2025

May 14, 2025
SELL
$78.89 - $122.69 $233,672 - $363,407
-2,962 Reduced 2.0%
145,103 $11.6 Million
Q1 2025

May 13, 2025
SELL
$78.89 - $122.69 $233,514 - $363,162
-2,960 Reduced 1.96%
148,065 $11.9 Million
Q4 2024

Feb 11, 2025
BUY
$98.56 - $117.93 $3.62 Million - $4.33 Million
36,721 Added 32.13%
151,025 $15.8 Million
Q3 2024

Nov 12, 2024
BUY
$103.52 - $144.6 $7.06 Million - $9.85 Million
68,153 Added 147.67%
114,304 $12.4 Million
Q2 2024

Aug 13, 2024
BUY
$108.17 - $137.16 $94,865 - $120,289
877 Added 1.94%
46,151 $6.03 Million
Q1 2024

May 07, 2024
SELL
$97.35 - $133.36 $304,121 - $416,616
-3,124 Reduced 6.45%
45,274 $6.02 Million
Q4 2023

Feb 14, 2024
SELL
$65.32 - $105.03 $354,165 - $569,472
-5,422 Reduced 10.07%
48,398 $4.98 Million
Q3 2023

Nov 14, 2023
BUY
$83.17 - $109.5 $78,346 - $103,149
942 Added 1.78%
53,820 $4.66 Million
Q2 2023

Aug 11, 2023
SELL
$79.76 - $110.27 $431,740 - $596,891
-5,413 Reduced 9.29%
52,878 $5.72 Million
Q1 2023

May 12, 2023
SELL
$83.13 - $112.97 $129,267 - $175,668
-1,555 Reduced 2.6%
58,291 $5.17 Million
Q4 2022

Feb 10, 2023
BUY
$65.09 - $89.25 $1.67 Million - $2.29 Million
25,707 Added 75.3%
59,846 $5.07 Million
Q3 2022

Nov 14, 2022
SELL
$82.31 - $123.77 $3.07 Million - $4.62 Million
-37,307 Reduced 52.22%
34,139 $2.82 Million
Q2 2022

Aug 15, 2022
BUY
$99.35 - $144.63 $1.64 Million - $2.39 Million
16,546 Added 30.14%
71,446 $7.34 Million
Q1 2022

May 13, 2022
SELL
$136.3 - $180.69 $1.56 Million - $2.07 Million
-11,463 Reduced 17.27%
54,900 $8.24 Million
Q4 2021

Feb 14, 2022
BUY
$141.92 - $177.58 $464,504 - $581,219
3,273 Added 5.19%
66,363 $11.6 Million
Q3 2021

Nov 12, 2021
BUY
$140.42 - $170.77 $777,224 - $945,211
5,535 Added 9.62%
63,090 $9.53 Million
Q2 2021

Aug 06, 2021
SELL
$165.96 - $196.86 $855,855 - $1.02 Million
-5,157 Reduced 8.22%
57,555 $10.2 Million
Q1 2021

May 12, 2021
SELL
$147.92 - $188.24 $2.02 Million - $2.57 Million
-13,677 Reduced 17.9%
62,712 $11.4 Million
Q4 2020

Feb 08, 2021
SELL
$108.39 - $156.88 $73,380 - $106,207
-677 Reduced 0.88%
76,389 $11.5 Million
Q3 2020

Dec 04, 2020
SELL
$103.3 - $128.48 $556,580 - $692,250
-5,388 Reduced 6.53%
77,066 $8.42 Million
Q3 2020

Nov 06, 2020
SELL
$103.3 - $128.48 $942,096 - $1.17 Million
-9,120 Reduced 9.96%
82,454 $9.01 Million
Q2 2020

Aug 17, 2020
SELL
$74.98 - $114.61 $318,964 - $487,550
-4,254 Reduced 4.44%
91,574 $10.3 Million
Q2 2020

Aug 11, 2020
BUY
$74.98 - $114.61 $852,222 - $1.3 Million
11,366 Added 13.46%
95,828 $10.6 Million
Q1 2020

May 14, 2020
SELL
$70.88 - $120.84 $429,887 - $732,894
-6,065 Reduced 6.7%
84,462 $6.88 Million
Q4 2019

Feb 06, 2020
BUY
$87.04 - $114.73 $1.29 Million - $1.7 Million
14,812 Added 19.56%
90,527 $9.96 Million
Q3 2019

Nov 12, 2019
SELL
$72.95 - $95.17 $1.11 Million - $1.45 Million
-15,237 Reduced 16.75%
75,715 $6.99 Million
Q2 2019

Aug 14, 2019
SELL
$70.87 - $101.6 $221,964 - $318,211
-3,132 Reduced 3.33%
90,952 $7.08 Million
Q1 2019

May 15, 2019
BUY
$63.07 - $93.05 $330,486 - $487,582
5,240 Added 5.9%
94,084 $8.75 Million
Q4 2018

Feb 13, 2019
SELL
$57.0 - $81.38 $74,613 - $106,526
-1,309 Reduced 1.45%
88,844 $7.12 Million
Q3 2018

Nov 08, 2018
SELL
$78.95 - $102.8 $141,162 - $183,806
-1,788 Reduced 1.94%
90,153 $7.21 Million
Q2 2018

Aug 03, 2018
BUY
$93.1 - $122.25 $3.8 Million - $4.99 Million
40,783 Added 79.72%
91,941 $8.8 Million
Q1 2018

May 11, 2018
SELL
$95.5 - $125.45 $48,896 - $64,230
-512 Reduced 0.99%
51,158 $5.92 Million
Q4 2017

Feb 08, 2018
SELL
$89.5 - $108.65 $124,226 - $150,806
-1,388 Reduced 2.62%
51,670 $4.88 Million
Q3 2017

Nov 06, 2017
BUY
$76.85 - $94.45 $4.08 Million - $5.01 Million
53,058
53,058 $5.01 Million

Others Institutions Holding MKSI

# of Institutions
487
Shares Held
70.6M
Call Options Held
2.05M
Put Options Held
371K
View Full List

About MKS INSTRUMENTS INC

MKSI Quotes by TradingView
  • Ticker MKSI
  • Exchange NASDAQ
  • Sector Technology
  • Industry Scientific & Technical Instruments
  • Shares Outstandng 66,491,100
  • Market Cap $9.49B
  • Description
  • MKS Instruments, Inc. provides instruments, systems, subsystems, and process control solutions that measure, monitor, deliver, analyze, power, and control critical parameters of manufacturing processes worldwide. Its Vacuum & Analysis segment offers pressure and vacuum control solutions, including direct and indirect pressure measurement; ma...
More about MKSI
Track This Portfolio

Track Sei Investments CO Portfolio

Follow Sei Investments CO and customize your updates to receive the information that matters most to you.

Portfolio Update

Get notified when there are updates to the investment portfolio of Sei Investments CO, based on Form 13F filings with the SEC.

News

Stay updated on Sei Investments CO with notifications on news.

Choose your preferred platform and Sign Up 👇 Telegram Email