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EAM Investors’s MKS Inc MKSI Stock Holding History

EAM Investors’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 		$3.63M Sell
15,814
-11,052
-41% -$2.5M 0.42% 114
2025
Q4 		$4.29M Buy
+26,866
New +$3.99M 0.48% 103
2024
Q2 		– Sell
-31,860
Closed -$4.24M – 308
2024
Q1 		$4.24M Buy
+31,860
New +$3.7M 0.66% 46
2021
Q1 		– Sell
-12,697
Closed -$1.91M – 403
2020
Q4 		$1.91M Buy
+12,697
New +$1.66M 0.31% 131
2020
Q2 		– Sell
-11,672
Closed -$951K – 296
2020
Q1 		$951K Sell
11,672
-2,352
-17% -$241K 0.3% 150
2019
Q4 		$1.54M Buy
+14,024
New +$1.47M 0.34% 139
2019
Q2 		– Sell
-17,470
Closed -$1.63M – 290
2019
Q1 		$1.63M Buy
+17,470
New +$1.41M 0.4% 105
2018
Q2 		– Sell
-21,493
Closed -$2.49M – 328
2018
Q1 		$2.49M Buy
21,493
+1,683
+8% +$185K 0.41% 125
2017
Q4 		$1.87M Sell
19,810
-256
-1% -$25.5K 0.34% 138
2017
Q3 		$1.9M Sell
20,066
-12,186
-38% -$996K 0.25% 206
2017
Q2 		$2.17M Sell
32,252
-15,037
-32% -$1.14M 0.36% 144
2017
Q1 		$3.25M Sell
47,289
-3,168
-6% -$209K 0.51% 61
2016
Q4 		$3M Sell
50,457
-10,147
-17% -$548K 0.4% 105
2016
Q3 		$3.01M Buy
+60,604
New +$2.86M 0.4% 85

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

EAM Investors's MKSI Position: Q1 2026 in Review

EAM Investors reduced its MKS Inc (MKSI) stake by 41% in Q1 2026, selling an estimated $2.5M and leaving 15,814 shares worth $3.63M. The position accounts for 0.42% of the portfolio, ranked #114.

EAM Investors first reported a position in MKSI in Q3 2016 and has held it in 14 quarters since. The position peaked at $4.29M in Q4 2025. 615 funds tracked by Wall St. Rank hold MKSI as of Q1 2026.

  • EAM Investors held 15,814 shares of MKS Inc worth $3.63M as of Q1 2026.
  • EAM Investors sold 11,052 MKS Inc shares in Q1 2026, an estimated $2.5M.
  • MKS Inc made up 0.42% of EAM Investors's portfolio in Q1 2026, its #114 holding.
  • EAM Investors first reported a position in MKS Inc in Q3 2016 and has held it in 14 quarters since.
  • EAM Investors's MKS Inc position peaked at $4.29M in Q4 2025.
  • 615 funds tracked by Wall St. Rank held MKS Inc as of Q1 2026.

Based on EAM Investors's 13F filing for Q1 2026, filed 13 May 2026.