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 | $218M | Buy |
947,032
+489,159
| +107% | +$111M | 0.04% | 423 |
|
|
2025
Q4 | $73.2M | Buy |
457,873
+316,715
| +224% | +$47M | 0.01% | 1095 |
|
|
2025
Q3 | $17.5M | Sell |
141,158
-4,880
| -3% | -$520K | ﹤0.01% | 2511 |
|
|
2025
Q2 | $14.5M | Buy |
+146,038
| New | +$11.9M | ﹤0.01% | 2557 |
|
|
2025
Q1 | – | Sell |
-37,120
| Closed | -$3.75M | – | 15170 |
|
|
2024
Q4 | $3.87M | Sell |
37,120
-64,463
| -63% | -$6.96M | ﹤0.01% | 4385 |
|
|
2024
Q3 | $11M | Buy |
101,583
+53,275
| +110% | +$6.33M | ﹤0.01% | 2746 |
|
|
2024
Q2 | $6.31M | Buy |
+48,308
| New | +$6.1M | ﹤0.01% | 3399 |
|
|
2024
Q1 | – | Sell |
-27,638
| Closed | -$3.21M | – | 15144 |
|
|
2023
Q4 | $2.84M | Buy |
27,638
+22,299
| +418% | +$1.81M | ﹤0.01% | 4733 |
|
|
2023
Q3 | $462K | Sell |
5,339
-93,789
| -95% | -$9.14M | ﹤0.01% | 8228 |
|
|
2023
Q2 | $10.7M | Buy |
99,128
+45,535
| +85% | +$4.17M | ﹤0.01% | 2586 |
|
|
2023
Q1 | $4.75M | Buy |
53,593
+52,259
| +3,917% | +$4.99M | ﹤0.01% | 3911 |
|
|
2022
Q4 | $113K | Sell |
1,334
-5,344
| -80% | -$428K | ﹤0.01% | 11051 |
|
|
2022
Q3 | $552K | Sell |
6,678
-167,699
| -96% | -$17.3M | ﹤0.01% | 8238 |
|
|
2022
Q2 | $17.9M | Buy |
+174,377
| New | +$20.3M | ﹤0.01% | 1966 |
|
|
2022
Q1 | – | Sell |
-20,233
| Closed | -$3.14M | – | 14201 |
|
|
2021
Q4 | $3.52M | Sell |
20,233
-18,021
| -47% | -$2.82M | ﹤0.01% | 5015 |
|
|
2021
Q3 | $5.77M | Sell |
38,254
-19,949
| -34% | -$3.06M | ﹤0.01% | 4036 |
|
|
2021
Q2 | $10.4M | Buy |
58,203
+44,030
| +311% | +$8M | ﹤0.01% | 3012 |
|
|
2021
Q1 | $2.63M | Sell |
14,173
-163,977
| -92% | -$27.6M | ﹤0.01% | 5756 |
|
|
2020
Q4 | $26.8M | Buy |
178,150
+71,589
| +67% | +$9.36M | 0.01% | 1508 |
|
|
2020
Q3 | $11.6M | Buy |
106,561
+18,558
| +21% | +$2.17M | ﹤0.01% | 2109 |
|
|
2020
Q2 | $9.97M | Buy |
88,003
+39,302
| +81% | +$3.91M | ﹤0.01% | 2222 |
|
|
2020
Q1 | $3.97M | Buy |
48,701
+38,382
| +372% | +$3.93M | ﹤0.01% | 3044 |
|
|
2019
Q4 | $1.14M | Buy |
+10,319
| New | +$1.08M | ﹤0.01% | 5367 |
|
|
2019
Q3 | – | Sell |
-153,876
| Closed | -$12.7M | – | 9541 |
|
|
2019
Q2 | $12M | Buy |
153,876
+147,410
| +2,280% | +$12.5M | 0.01% | 1960 |
|
|
2019
Q1 | $602K | Sell |
6,466
-45,603
| -88% | -$3.68M | ﹤0.01% | 6473 |
|
|
2018
Q4 | $3.36M | Sell |
52,069
-55,676
| -52% | -$4.03M | ﹤0.01% | 3353 |
|
|
2018
Q3 | $8.64M | Sell |
107,745
-63,401
| -37% | -$5.79M | ﹤0.01% | 2295 |
|
|
2018
Q2 | $16.4M | Buy |
171,146
+149,878
| +705% | +$16.3M | 0.01% | 1481 |
|
|
2018
Q1 | $2.46M | Sell |
21,268
-82,516
| -80% | -$9.06M | ﹤0.01% | 3421 |
|
|
2017
Q4 | $9.81M | Buy |
103,784
+28,174
| +37% | +$2.81M | 0.01% | 1753 |
|
|
2017
Q3 | $7.14M | Sell |
75,610
-125,683
| -62% | -$10.3M | 0.01% | 1929 |
|
|
2017
Q2 | $13.5M | Buy |
201,293
+166,813
| +484% | +$12.6M | 0.01% | 1240 |
|
|
2017
Q1 | $2.37M | Buy |
34,480
+17,597
| +104% | +$1.16M | ﹤0.01% | 2877 |
|
|
2016
Q4 | $1M | Buy |
16,883
+6,864
| +69% | +$370K | ﹤0.01% | 3847 |
|
|
2016
Q3 | $498K | Sell |
10,019
-19,328
| -66% | -$911K | ﹤0.01% | 4862 |
|
|
2016
Q2 | $1.26M | Sell |
29,347
-10,152
| -26% | -$394K | ﹤0.01% | 3280 |
|
|
2016
Q1 | $1.49M | Sell |
39,499
-55,808
| -59% | -$1.91M | ﹤0.01% | 2997 |
|
|
2015
Q4 | $3.43M | Sell |
95,307
-10,639
| -10% | -$379K | ﹤0.01% | 2180 |
|
|
2015
Q3 | $3.55M | Sell |
105,946
-73,969
| -41% | -$2.57M | ﹤0.01% | 2278 |
|
|
2015
Q2 | $6.83M | Buy |
179,915
+21,443
| +14% | +$781K | 0.01% | 1760 |
|
|
2015
Q1 | $5.36M | Sell |
158,472
-76,527
| -33% | -$2.69M | 0.01% | 1973 |
|
|
2014
Q4 | $8.6M | Sell |
234,999
-48,818
| -17% | -$1.73M | 0.01% | 1519 |
|
|
2014
Q3 | $9.47M | Buy |
283,817
+72,631
| +34% | +$2.38M | 0.01% | 1408 |
|
|
2014
Q2 | $6.6M | Sell |
211,186
-35,125
| -14% | -$1.02M | 0.01% | 1606 |
|
|
2014
Q1 | $7.36M | Buy |
246,311
+7,732
| +3% | +$232K | 0.01% | 1478 |
|
|
2013
Q4 | $7.14M | Buy |
238,579
+92,627
| +63% | +$2.69M | 0.01% | 1430 |
|
|
2013
Q3 | $3.88M | Buy |
145,952
+72,108
| +98% | +$1.93M | 0.01% | 1785 |
|
|
2013
Q2 | $1.96M | Buy |
+73,844
| New | +$2M | ﹤0.01% | 2512 |
|
Other funds holding MKSI
VPM
VCM
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.