Simplex Trading
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Simplex Trading’s MKS Inc MKSI Stock Holding History

Simplex Trading’s Portfolio MKSI Stock Details MKSI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$578K Sell
1,300
-5,900
-82% -$1.85M ﹤0.01% 3425
2026
Q1 		$1.65M Sell
7,200
-28,400
-80% -$6.42M ﹤0.01% 2002
2025
Q4 		$5.69M Buy
35,600
+14,400
+68% +$2.14M ﹤0.01% 1186
2025
Q3 		$2.62M Buy
21,200
+2,500
+13% +$266K ﹤0.01% 2049
2025
Q2 		$1.86M Buy
18,700
+13,300
+246% +$1.08M ﹤0.01% 2180
2025
Q1 		$432K Buy
5,400
+2,400
+80% +$242K ﹤0.01% 3541
2024
Q4 		$313K Sell
3,000
-1,100
-27% -$119K ﹤0.01% 4025
2024
Q3 		$445K Hold
4,100
– – ﹤0.01% 3718
2024
Q2 		$535K Sell
4,100
-5,000
-55% -$631K ﹤0.01% 3600
2024
Q1 		$1.21M Sell
9,100
-4,400
-33% -$511K ﹤0.01% 2914
2023
Q4 		$1.39M Buy
13,500
+5,500
+69% +$447K ﹤0.01% 2691
2023
Q3 		$692K Buy
8,000
+3,800
+90% +$371K ﹤0.01% 3045
2023
Q2 		$454K Buy
4,200
+900
+27% +$82.4K ﹤0.01% 3417
2023
Q1 		$292K Sell
3,300
-6,200
-65% -$592K ﹤0.01% 3866
2022
Q4 		$804K Buy
9,500
+2,700
+40% +$216K ﹤0.01% 2689
2022
Q3 		$561K Buy
6,800
+900
+15% +$92.7K ﹤0.01% 3341
2022
Q2 		$605K Buy
5,900
+4,800
+436% +$559K ﹤0.01% 3215
2022
Q1 		$165K Sell
1,100
-4,700
-81% -$730K ﹤0.01% 5429
2021
Q4 		$1.01M Sell
5,800
-1,800
-24% -$281K ﹤0.01% 2838
2021
Q3 		$1.3M Hold
7,600
– – ﹤0.01% 2723
2021
Q2 		$1.35M Buy
7,600
+7,578
+34,445% +$1.38M ﹤0.01% 2697
2021
Q1 		$407K Sell
22
-11
-33% -$1.85K ﹤0.01% 3671
2020
Q4 		$496K Buy
33
+15
+83% +$1.96K ﹤0.01% 3441
2020
Q3 		$196K Sell
18
-25
-58% -$2.93K ﹤0.01% 4135
2020
Q2 		$486K Buy
43
+9
+26% +$895 ﹤0.01% 2942
2020
Q1 		$276K Sell
34
-42
-55% -$4.3K ﹤0.01% 3225
2019
Q4 		$836K Sell
76
-6
-7% -$629 ﹤0.01% 2251
2019
Q3 		$756K Buy
82
+63
+332% +$5.2K ﹤0.01% 2223
2019
Q2 		$147K Sell
19
-17
-47% -$1.44K ﹤0.01% 3791
2019
Q1 		$334K Buy
36
+32
+800% +$2.58K ﹤0.01% 3081
2018
Q4 		$25K Sell
4
-112
-97% -$8.1K ﹤0.01% 5162
2018
Q3 		$929K Sell
116
-26
-18% -$2.38K ﹤0.01% 1973
2018
Q2 		$1.36M Buy
142
+70
+97% +$7.63K 0.01% 1494
2018
Q1 		$34K Sell
72
-27
-27% -$2.96K ﹤0.01% 2819
2017
Q4 		$24K Sell
99
-9
-8% -$897 ﹤0.01% 3133
2017
Q3 		$177K Buy
108
+28
+35% +$2.29K 0.01% 1275
2017
Q2 		$28K Buy
80
+23
+40% +$1.74K ﹤0.01% 2947
2017
Q1 		$37K Buy
57
+45
+375% +$2.96K ﹤0.01% 2643
2016
Q4 		$1K Buy
+12
New +$648 ﹤0.01% 5439
2015
Q4 		– Sell
-60
Closed -$1K – 5836
2015
Q3 		$1K Buy
60
+30
+100% +$1.04K ﹤0.01% 5071
2015
Q2 		$3K Buy
+30
New +$1.09K ﹤0.01% 4063

Other funds holding MKSI

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Point72 Asset Management
Point72 Asset Management Stamford, Connecticut $90.7B AUM 77.13% 1-Year Est. Return
Capital International Investors
Capital International Investors Los Angeles, California $484B AUM 34.9% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
AMH
Aspex Management (HK) Central, Hong Kong $8.89B AUM 39.91% 1-Year Est. Return

Simplex Trading's MKSI Position: Q2 2026 in Review

Simplex Trading opened a new position in MKS Inc (MKSI) in Q2 2026: 5,931 shares worth $2.64M. The stake represents ﹤0.01% of the portfolio and ranks #1746 among its holdings. This is a return to the name: Simplex Trading previously reported a position in MKSI as recently as Q1 2025.

Simplex Trading first reported a position in MKSI in Q4 2014 and has held it in 22 quarters since. 775 funds tracked by Wall St. Rank hold MKSI as of Q2 2026.

  • Simplex Trading held 5,931 shares of MKS Inc worth $2.64M as of Q2 2026.
  • MKS Inc was a new Simplex Trading position in Q2 2026.
  • MKS Inc made up ﹤0.01% of Simplex Trading's portfolio in Q2 2026, its #1746 holding.
  • Simplex Trading first reported a position in MKS Inc in Q4 2014 and has held it in 22 quarters since.
  • 775 funds tracked by Wall St. Rank held MKS Inc as of Q2 2026.

Based on Simplex Trading's 13F filing for Q2 2026, filed 12 Aug 2026.