Citadel Advisors’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
Q1
$7.15M Sell
31,100
-13,700
-31% -$3.1M ﹤0.01% 3779
2025
Q4
$7.16M Sell
44,800
-11,000
-20% -$1.63M ﹤0.01% 3727
2025
Q3
$6.91M Buy
55,800
+16,000
+40% +$1.71M ﹤0.01% 3811
2025
Q2
$3.95M Sell
39,800
-53,100
-57% -$4.32M ﹤0.01% 4510
2025
Q1
$7.45M Buy
92,900
+66,500
+252% +$6.71M ﹤0.01% 3275
2024
Q4
$2.76M Sell
26,400
-5,200
-16% -$561K ﹤0.01% 4978
2024
Q3
$3.44M Buy
31,600
+500
+2% +$59.4K ﹤0.01% 4554
2024
Q2
$4.06M Sell
31,100
-26,800
-46% -$3.38M ﹤0.01% 4073
2024
Q1
$7.7M Buy
57,900
+2,100
+4% +$244K ﹤0.01% 3309
2023
Q4
$5.74M Buy
55,800
+1,700
+3% +$138K ﹤0.01% 3590
2023
Q3
$4.68M Sell
54,100
-7,200
-12% -$702K ﹤0.01% 3759
2023
Q2
$6.63M Sell
61,300
-12,900
-17% -$1.18M ﹤0.01% 3232
2023
Q1
$6.58M Buy
74,200
+22,975
+45% +$2.19M ﹤0.01% 3372
2022
Q4
$4.34M Buy
51,225
+2,900
+6% +$232K ﹤0.01% 4094
2022
Q3
$3.99M Sell
48,325
-36,275
-43% -$3.73M ﹤0.01% 4249
2022
Q2
$8.68M Buy
84,600
+59,800
+241% +$6.97M ﹤0.01% 2874
2022
Q1
$3.72M Buy
24,800
+5,700
+30% +$886K ﹤0.01% 4749
2021
Q4
$3.33M Sell
19,100
-24,100
-56% -$3.77M ﹤0.01% 5133
2021
Q3
$6.52M Buy
43,200
+21,500
+99% +$3.3M ﹤0.01% 3813
2021
Q2
$3.86M Sell
21,700
-13,600
-39% -$2.47M ﹤0.01% 5018
2021
Q1
$6.54M Sell
35,300
-3,900
-10% -$655K ﹤0.01% 3722
2020
Q4
$5.9M Buy
39,200
+26,200
+202% +$3.43M ﹤0.01% 3407
2020
Q3
$1.42M Sell
13,000
-8,500
-40% -$996K ﹤0.01% 5377
2020
Q2
$2.44M Buy
21,500
+9,800
+84% +$975K ﹤0.01% 4219
2020
Q1
$953K Buy
11,700
+3,800
+48% +$389K ﹤0.01% 5417
2019
Q4
$869K Sell
7,900
-6,600
-46% -$691K ﹤0.01% 5854
2019
Q3
$1.34M Sell
14,500
-4,500
-24% -$372K ﹤0.01% 5121
2019
Q2
$1.48M Buy
19,000
+5,600
+42% +$473K ﹤0.01% 5041
2019
Q1
$1.25M Buy
13,400
+6,700
+100% +$540K ﹤0.01% 5207
2018
Q4
$433K Sell
6,700
-9,900
-60% -$716K ﹤0.01% 6628
2018
Q3
$1.33M Sell
16,600
-5,200
-24% -$475K ﹤0.01% 5065
2018
Q2
$2.09M Buy
21,800
+2,600
+14% +$284K ﹤0.01% 4046
2018
Q1
$2.22M Sell
19,200
-500
-3% -$54.9K ﹤0.01% 3569
2017
Q4
$1.86M Buy
19,700
+200
+1% +$19.9K ﹤0.01% 3733
2017
Q3
$1.84M Buy
19,500
+9,300
+91% +$760K ﹤0.01% 3501
2017
Q2
$686K Buy
10,200
+1,500
+17% +$114K ﹤0.01% 4660
2017
Q1
$598K Buy
8,700
+4,400
+102% +$290K ﹤0.01% 4738
2016
Q4
$255K Buy
+4,300
New +$232K ﹤0.01% 5909
2016
Q2
Sell
-7,400
Closed -$279K 7167
2016
Q1
$279K Buy
7,400
+3,000
+68% +$102K ﹤0.01% 5192
2015
Q4
$158K Buy
4,400
+3,100
+238% +$110K ﹤0.01% 6134
2015
Q3
$44K Sell
1,300
-3,700
-74% -$129K ﹤0.01% 7666
2015
Q2
$190K Sell
5,000
-1,400
-22% -$51K ﹤0.01% 6393
2015
Q1
$216K Buy
6,400
+4,400
+220% +$155K ﹤0.01% 6088
2014
Q4
$73K Buy
2,000
+1,800
+900% +$63.7K ﹤0.01% 6920
2014
Q3
$7K Buy
+200
New +$6.55K ﹤0.01% 7838
2014
Q2
Sell
-700
Closed -$21K 8156
2014
Q1
$21K Buy
700
+300
+75% +$9K ﹤0.01% 7267
2013
Q4
$12K Sell
400
-600
-60% -$17.4K ﹤0.01% 6665
2013
Q3
$27K Sell
1,000
-200
-17% -$5.34K ﹤0.01% 6076
2013
Q2
$32K Buy
+1,200
New +$32.5K ﹤0.01% 5871

Other funds holding MKSI

Citadel Advisors's MKSI Position: Q1 2026 in Review

Citadel Advisors increased its MKS Inc (MKSI) stake by 107% in Q1 2026, buying an estimated $111M and bringing the position to 947,032 shares worth $218M. The position accounts for 0.04% of the portfolio, ranked #423.

Citadel Advisors first reported a position in MKSI in Q2 2013 and has held it in 48 quarters since. 615 funds tracked by Wall St. Rank hold MKSI as of Q1 2026.

  • Citadel Advisors held 947,032 shares of MKS Inc worth $218M as of Q1 2026.
  • Citadel Advisors bought 489,159 MKS Inc shares in Q1 2026, an estimated $111M.
  • MKS Inc made up 0.04% of Citadel Advisors's portfolio in Q1 2026, its #423 holding.
  • Citadel Advisors first reported a position in MKS Inc in Q2 2013 and has held it in 48 quarters since.
  • 615 funds tracked by Wall St. Rank held MKS Inc as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.