Walleye Trading
MKSI icon

Walleye Trading’s MKS Inc MKSI Stock Holding History

Walleye 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
Q1 		$1.2M Sell
5,200
-1,100
-17% -$249K ﹤0.01% 2030
2025
Q4 		$1.01M Sell
6,300
-200
-3% -$29.7K ﹤0.01% 2376
2025
Q3 		$805K Buy
6,500
+3,400
+110% +$362K ﹤0.01% 2413
2025
Q2 		$308K Sell
3,100
-5,000
-62% -$406K ﹤0.01% 2975
2025
Q1 		$649K Buy
8,100
+6,100
+305% +$616K ﹤0.01% 2351
2024
Q4 		$209K Sell
2,000
-4,100
-67% -$443K ﹤0.01% 3204
2024
Q3 		$663K Sell
6,100
-100
-2% -$11.9K ﹤0.01% 2344
2024
Q2 		$810K Sell
6,200
-3,800
-38% -$480K ﹤0.01% 2212
2024
Q1 		$1.33M Sell
10,000
-1,100
-10% -$128K ﹤0.01% 2012
2023
Q4 		$1.14M Buy
11,100
+1,300
+13% +$106K ﹤0.01% 2358
2023
Q3 		$848K Buy
9,800
+3,900
+66% +$380K ﹤0.01% 2510
2023
Q2 		$638K Buy
5,900
+300
+5% +$27.5K ﹤0.01% 2552
2023
Q1 		$496K Buy
5,600
+4,000
+250% +$382K ﹤0.01% 2808
2022
Q4 		$136K Sell
1,600
-700
-30% -$56.1K ﹤0.01% 3818
2022
Q3 		$190K Sell
2,300
-12,000
-84% -$1.24M ﹤0.01% 3718
2022
Q2 		$1.47M Buy
14,300
+8,200
+134% +$955K ﹤0.01% 1914
2022
Q1 		$915K Buy
6,100
+5,200
+578% +$808K ﹤0.01% 2300
2021
Q4 		$157K Sell
900
-4,800
-84% -$750K ﹤0.01% 4093
2021
Q3 		$860K Buy
5,700
+300
+6% +$46.1K ﹤0.01% 2374
2021
Q2 		$961K Sell
5,400
-43,800
-89% -$7.96M ﹤0.01% 2182
2021
Q1 		$9.12M Buy
49,200
+9,300
+23% +$1.56M 0.04% 364
2020
Q4 		$6M Buy
39,900
+35,000
+714% +$4.58M 0.03% 620
2020
Q3 		$535K Sell
4,900
-11,500
-70% -$1.35M ﹤0.01% 2187
2020
Q2 		$1.86M Buy
16,400
+7,800
+91% +$776K 0.01% 1159
2020
Q1 		$700K Buy
8,600
+2,700
+46% +$276K 0.01% 1580
2019
Q4 		$649K Buy
+5,900
New +$618K ﹤0.01% 2180
2019
Q3 		– Sell
-4,300
Closed -$335K – 4274
2019
Q2 		$335K Sell
4,300
-6,700
-61% -$566K ﹤0.01% 2516
2019
Q1 		$1.02M Buy
11,000
+5,200
+90% +$419K 0.01% 1636
2018
Q4 		$375K Sell
5,800
-6,500
-53% -$470K ﹤0.01% 2775
2018
Q3 		$986K Buy
12,300
+9,800
+392% +$895K 0.01% 2082
2018
Q2 		$239K Buy
2,500
+1,300
+108% +$142K ﹤0.01% 3502
2018
Q1 		$139K Sell
1,200
-3,500
-74% -$384K ﹤0.01% 3738
2017
Q4 		$443 Buy
+4,700
New +$468K ﹤0.01% 2713
2017
Q3 		– Sell
-4,100
Closed -$276 – 4422
2017
Q2 		$276 Buy
4,100
+3,200
+356% +$242K ﹤0.01% 2887
2017
Q1 		$62 Sell
900
-9,100
-91% -$599K ﹤0.01% 3671
2016
Q4 		$594K Buy
10,000
+3,400
+52% +$183K ﹤0.01% 1946
2016
Q3 		$328K Buy
6,600
+3,300
+100% +$156K ﹤0.01% 2459
2016
Q2 		$142K Sell
3,300
-300
-8% -$11.6K ﹤0.01% 3220
2016
Q1 		$135K Sell
3,600
-1,400
-28% -$47.8K ﹤0.01% 3102
2015
Q4 		$180K Buy
5,000
+4,700
+1,567% +$167K ﹤0.01% 2797
2015
Q3 		$10K Buy
+300
New +$10.4K ﹤0.01% 4388
2015
Q2 		– Sell
-700
Closed -$24K – 5022
2015
Q1 		$24K Buy
+700
New +$24.6K ﹤0.01% 3446

Other funds holding MKSI

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Capital International Investors
Capital International Investors Los Angeles, California $427B AUM 29.17% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

Walleye Trading's MKSI Position: Q1 2026 in Review

Walleye Trading increased its MKS Inc (MKSI) stake by 47% in Q1 2026, buying an estimated $144K and bringing the position to 1,985 shares worth $456K. The position accounts for ﹤0.01% of the portfolio, ranked #2645.

Walleye Trading first reported a position in MKSI in Q1 2015 and has held it in 21 quarters since. The position peaked at $1.09M in Q3 2023. 615 funds tracked by Wall St. Rank hold MKSI as of Q1 2026.

  • Walleye Trading held 1,985 shares of MKS Inc worth $456K as of Q1 2026.
  • Walleye Trading bought 636 MKS Inc shares in Q1 2026, an estimated $144K.
  • MKS Inc made up ﹤0.01% of Walleye Trading's portfolio in Q1 2026, its #2645 holding.
  • Walleye Trading first reported a position in MKS Inc in Q1 2015 and has held it in 21 quarters since.
  • Walleye Trading's MKS Inc position peaked at $1.09M in Q3 2023.
  • 615 funds tracked by Wall St. Rank held MKS Inc as of Q1 2026.

Based on Walleye Trading's 13F filing for Q1 2026, filed 11 May 2026.