Jane Street’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 | $124M | Buy |
540,200
+900
| +0.2% | +$204K | 0.02% | 556 |
|
|
2025
Q4 | $86.2M | Sell |
539,300
-2,000
| -0.4% | -$297K | 0.01% | 655 |
|
|
2025
Q3 | $67M | Buy |
541,300
+9,900
| +2% | +$1.06M | 0.01% | 795 |
|
|
2025
Q2 | $52.8M | Buy |
531,400
+8,100
| +2% | +$658K | 0.01% | 730 |
|
|
2025
Q1 | $41.9M | Sell |
523,300
-1,000
| -0.2% | -$101K | 0.01% | 763 |
|
|
2024
Q4 | $54.7M | Buy |
524,300
+600
| +0.1% | +$64.8K | 0.01% | 655 |
|
|
2024
Q3 | $56.9M | Sell |
523,700
-1,300
| -0.2% | -$154K | 0.01% | 630 |
|
|
2024
Q2 | $68.6M | Buy |
525,000
+520,000
| +10,400% | +$65.6M | 0.02% | 545 |
|
|
2024
Q1 | $665K | Buy |
5,000
+2,100
| +72% | +$244K | ﹤0.01% | 6160 |
|
|
2023
Q4 | $298K | Sell |
2,900
-1,100
| -28% | -$89.3K | ﹤0.01% | 7604 |
|
|
2023
Q3 | $346K | Sell |
4,000
-31,600
| -89% | -$3.08M | ﹤0.01% | 6842 |
|
|
2023
Q2 | $3.85M | Buy |
35,600
+26,600
| +296% | +$2.43M | ﹤0.01% | 3119 |
|
|
2023
Q1 | $798K | Buy |
9,000
+5,000
| +125% | +$477K | ﹤0.01% | 5443 |
|
|
2022
Q4 | $339K | Sell |
4,000
-3,300
| -45% | -$264K | ﹤0.01% | 6803 |
|
|
2022
Q3 | $603K | Sell |
7,300
-1,700
| -19% | -$175K | ﹤0.01% | 6337 |
|
|
2022
Q2 | $924K | Sell |
9,000
-4,300
| -32% | -$501K | ﹤0.01% | 5626 |
|
|
2022
Q1 | $2M | Buy |
13,300
+1,200
| +10% | +$186K | ﹤0.01% | 4759 |
|
|
2021
Q4 | $2.11M | Sell |
12,100
-3,200
| -21% | -$500K | ﹤0.01% | 4380 |
|
|
2021
Q3 | $2.31M | Sell |
15,300
-12,100
| -44% | -$1.86M | ﹤0.01% | 4183 |
|
|
2021
Q2 | $4.88M | Buy |
27,400
+10,300
| +60% | +$1.87M | ﹤0.01% | 2680 |
|
|
2021
Q1 | $3.17M | Buy |
17,100
+6,600
| +63% | +$1.11M | ﹤0.01% | 3143 |
|
|
2020
Q4 | $1.58M | Sell |
10,500
-1,200
| -10% | -$157K | ﹤0.01% | 3925 |
|
|
2020
Q3 | $1.28M | Buy |
11,700
+8,800
| +303% | +$1.03M | ﹤0.01% | 3695 |
|
|
2020
Q2 | $328K | Buy |
+2,900
| New | +$289K | ﹤0.01% | 5709 |
|
|
2020
Q1 | – | Sell |
-6,900
| Closed | -$759K | – | 5729 |
|
|
2019
Q4 | $759K | Buy |
+6,900
| New | +$723K | ﹤0.01% | 3155 |
|
|
2018
Q3 | – | Sell |
-42,300
| Closed | -$4.05M | – | 5478 |
|
|
2018
Q2 | $4.05M | Buy |
42,300
+33,500
| +381% | +$3.65M | 0.01% | 1234 |
|
|
2018
Q1 | $1.02M | Buy |
+8,800
| New | +$966K | ﹤0.01% | 2642 |
|
|
2017
Q4 | – | Sell |
-4,600
| Closed | -$434K | – | 4961 |
|
|
2017
Q3 | $434K | Buy |
+4,600
| New | +$376K | ﹤0.01% | 3276 |
|
Other funds holding MKSI
VPM
VCM
Jane Street's MKSI Position: Q1 2026 in Review
Jane Street reduced its MKS Inc (MKSI) stake by 37% in Q1 2026, selling an estimated $31.6M and leaving 243,253 shares worth $55.9M. The position accounts for 0.01% of the portfolio, ranked #980.
Jane Street first reported a position in MKSI in Q2 2013 and has held it in 31 quarters since. The position peaked at $61.2M in Q4 2025. 615 funds tracked by Wall St. Rank hold MKSI as of Q1 2026.
- Jane Street held 243,253 shares of MKS Inc worth $55.9M as of Q1 2026.
- Jane Street sold 139,862 MKS Inc shares in Q1 2026, an estimated $31.6M.
- MKS Inc made up 0.01% of Jane Street's portfolio in Q1 2026, its #980 holding.
- Jane Street first reported a position in MKS Inc in Q2 2013 and has held it in 31 quarters since.
- Jane Street's MKS Inc position peaked at $61.2M in Q4 2025.
- 615 funds tracked by Wall St. Rank held MKS Inc as of Q1 2026.
Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.