SEI Investments’s MKS Inc MKSI Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q2
$23.6M Sell
53,018
-48,196
-48% -$15.1M 0.02% 744
2026
Q1
$23.3M Sell
101,214
-24,844
-20% -$5.62M 0.02% 726
2025
Q4
$20.1M Buy
126,058
+13,888
+12% +$2.06M 0.02% 739
2025
Q3
$13.9M Buy
112,170
+2,820
+3% +$301K 0.01% 881
2025
Q2
$10.9M Sell
109,350
-35,753
-25% -$2.91M 0.01% 945
2025
Q1
$11.6M Sell
145,103
-5,922
-4% -$598K 0.02% 909
2024
Q4
$15.8M Buy
151,025
+36,721
+32% +$3.96M 0.02% 790
2024
Q3
$12.4M Buy
114,304
+68,153
+148% +$8.1M 0.02% 893
2024
Q2
$6.03M Buy
46,151
+877
+2% +$111K 0.01% 1148
2024
Q1
$6.02M Sell
45,274
-3,124
-6% -$363K 0.01% 1117
2023
Q4
$4.98M Sell
48,398
-5,422
-10% -$440K 0.01% 1193
2023
Q3
$4.66M Buy
53,820
+942
+2% +$91.8K 0.01% 1205
2023
Q2
$5.72M Sell
52,878
-5,413
-9% -$495K 0.01% 1134
2023
Q1
$5.17M Sell
58,291
-1,555
-3% -$148K 0.01% 1170
2022
Q4
$5.07M Buy
59,846
+25,707
+75% +$2.06M 0.01% 1047
2022
Q3
$2.82M Sell
34,139
-37,307
-52% -$3.84M 0.01% 1376
2022
Q2
$7.34M Buy
71,446
+16,546
+30% +$1.93M 0.02% 924
2022
Q1
$8.24M Sell
54,900
-11,463
-17% -$1.78M 0.02% 845
2021
Q4
$11.6M Buy
66,363
+3,273
+5% +$512K 0.02% 723
2021
Q3
$9.53M Buy
63,090
+5,535
+10% +$850K 0.02% 765
2021
Q2
$10.2M Sell
57,555
-5,157
-8% -$937K 0.02% 726
2021
Q1
$11.4M Sell
62,712
-13,677
-18% -$2.3M 0.03% 613
2020
Q4
$11.5M Sell
76,389
-677
-0.9% -$88.6K 0.03% 566
2020
Q3
$8.42M Sell
77,066
-14,508
-16% -$1.7M 0.02% 617
2020
Q2
$10.3M Buy
91,574
+7,112
+8% +$708K 0.03% 524
2020
Q1
$6.88M Sell
84,462
-6,065
-7% -$621K 0.03% 610
2019
Q4
$9.96M Buy
90,527
+14,812
+20% +$1.55M 0.03% 587
2019
Q3
$6.99M Sell
75,715
-15,237
-17% -$1.26M 0.02% 770
2019
Q2
$7.08M Sell
90,952
-3,132
-3% -$265K 0.02% 756
2019
Q1
$8.75M Buy
94,084
+5,240
+6% +$423K 0.03% 616
2018
Q4
$7.12M Sell
88,844
-1,309
-1% -$94.6K 0.03% 710
2018
Q3
$7.21M Sell
90,153
-1,788
-2% -$163K 0.03% 681
2018
Q2
$8.8M Buy
91,941
+40,783
+80% +$4.45M 0.03% 641
2018
Q1
$5.92M Sell
51,158
-512
-1% -$56.2K 0.02% 756
2017
Q4
$4.88M Sell
51,670
-1,388
-3% -$138K 0.02% 924
2017
Q3
$5.01M Buy
53,058
+49,055
+1,225% +$4.01M 0.02% 888
2017
Q2
$269K Buy
4,003
+313
+8% +$23.7K ﹤0.01% 1800
2017
Q1
$254K Buy
3,690
+9
+0.2% +$592 ﹤0.01% 1725
2016
Q4
$219K Buy
3,681
+6
+0.2% +$324 ﹤0.01% 1764
2016
Q3
$182K Buy
3,675
+2,137
+139% +$101K ﹤0.01% 1695
2016
Q2
$67K Buy
1,538
+940
+157% +$36.5K ﹤0.01% 1858
2016
Q1
$23K Buy
598
+125
+26% +$4.27K ﹤0.01% 2020
2015
Q4
$17K Buy
473
+75
+19% +$2.67K ﹤0.01% 2147
2015
Q3
$14K Hold
398
﹤0.01% 2125
2015
Q2
$15K Sell
398
-6,485
-94% -$236K ﹤0.01% 1850
2015
Q1
$233K Sell
6,883
-4,542
-40% -$160K ﹤0.01% 1373
2014
Q4
$418K Buy
+11,425
New +$404K ﹤0.01% 1208

Other funds holding MKSI

SEI Investments's MKSI Position: Q2 2026 in Review

SEI Investments reduced its MKS Inc (MKSI) stake by 48% in Q2 2026, selling an estimated $15.1M and leaving 53,018 shares worth $23.6M. The position accounts for 0.02% of the portfolio, ranked #744.

SEI Investments first reported a position in MKSI in Q4 2014 and has held it in 47 quarters since. 773 funds tracked by Wall St. Rank hold MKSI as of Q2 2026.

  • SEI Investments held 53,018 shares of MKS Inc worth $23.6M as of Q2 2026.
  • SEI Investments sold 48,196 MKS Inc shares in Q2 2026, an estimated $15.1M.
  • MKS Inc made up 0.02% of SEI Investments's portfolio in Q2 2026, its #744 holding.
  • SEI Investments first reported a position in MKS Inc in Q4 2014 and has held it in 47 quarters since.
  • 773 funds tracked by Wall St. Rank held MKS Inc as of Q2 2026.

Based on SEI Investments's 13F filing for Q2 2026, filed 14 Aug 2026.