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Polaris Capital Management’s MKS Inc MKSI Stock Holding History

Polaris Capital Management’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 		$31M Sell
134,700
-130,400
-49% -$29.5M 2.53% 15
2025
Q4 		$42.4M Sell
265,100
-136,200
-34% -$20.2M 3.51% 6
2025
Q3 		$49.7M Buy
401,300
+39,900
+11% +$4.25M 3.26% 7
2025
Q2 		$35.9M Sell
361,400
-12,200
-3% -$992K 2.39% 13
2025
Q1 		$29.9M Buy
373,600
+21,200
+6% +$2.14M 1.71% 27
2024
Q4 		$36.8M Sell
352,400
-1,600
-0.5% -$173K 1.77% 24
2024
Q3 		$38.5M Sell
354,000
-4,600
-1% -$546K 1.9% 18
2024
Q2 		$46.8M Sell
358,600
-8,100
-2% -$1.02M 2.51% 9
2024
Q1 		$48.8M Sell
366,700
-167,300
-31% -$19.4M 2.43% 7
2023
Q4 		$54.9M Buy
534,000
+72,700
+16% +$5.9M 2.65% 5
2023
Q3 		$39.9M Sell
461,300
-184,400
-29% -$18M 2.15% 12
2023
Q2 		$69.8M Sell
645,700
-5,100
-0.8% -$467K 2.62% 7
2023
Q1 		$57.7M Buy
650,800
+69,200
+12% +$6.6M 2.15% 11
2022
Q4 		$49.3M Buy
581,600
+570,900
+5,336% +$45.8M 1.72% 25
2022
Q3 		$884K Buy
10,700
+2,400
+29% +$247K 0.03% 79
2022
Q2 		$852K Buy
8,300
+3,000
+57% +$349K 0.03% 79
2022
Q1 		$795K Sell
5,300
-3,200
-38% -$497K 0.03% 85
2021
Q4 		$1.48M Hold
8,500
– – 0.05% 67
2021
Q3 		$1.28M Hold
8,500
– – 0.04% 74
2021
Q2 		$1.51M Hold
8,500
– – 0.05% 66
2021
Q1 		$1.48M Sell
8,500
-2,500
-23% -$420K 0.05% 72
2020
Q4 		$1.66M Hold
11,000
– – 0.06% 57
2020
Q3 		$1.2M Sell
11,000
-1,600
-13% -$188K 0.06% 59
2020
Q2 		$1.43M Sell
12,600
-3,200
-20% -$318K 0.07% 58
2020
Q1 		$1.29M Buy
+15,800
New +$1.62M 0.08% 61

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

Polaris Capital Management's MKSI Position: Q1 2026 in Review

Polaris Capital Management reduced its MKS Inc (MKSI) stake by 49% in Q1 2026, selling an estimated $29.5M and leaving 134,700 shares worth $31M. The position accounts for 2.53% of the portfolio, ranked #15.

Polaris Capital Management first reported a position in MKSI in Q1 2020 and has held it in 25 quarters since. The position peaked at $69.8M in Q2 2023. 615 funds tracked by Wall St. Rank hold MKSI as of Q1 2026.

  • Polaris Capital Management held 134,700 shares of MKS Inc worth $31M as of Q1 2026.
  • Polaris Capital Management sold 130,400 MKS Inc shares in Q1 2026, an estimated $29.5M.
  • MKS Inc made up 2.53% of Polaris Capital Management's portfolio in Q1 2026, its #15 holding.
  • Polaris Capital Management first reported a position in MKS Inc in Q1 2020 and has held it in 25 quarters since.
  • Polaris Capital Management's MKS Inc position peaked at $69.8M in Q2 2023.
  • 615 funds tracked by Wall St. Rank held MKS Inc as of Q1 2026.

Based on Polaris Capital Management's 13F filing for Q1 2026, filed 27 Apr 2026.