PEAK6
MKSI icon

PEAK6’s MKS Inc MKSI Stock Holding History

PEAK6’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 		$111M Buy
249,600
+149,400
+149% +$46.8M 0.23% 85
2026
Q1 		$23M Sell
100,200
-13,900
-12% -$3.14M 0.05% 316
2025
Q4 		$18.2M Buy
114,100
+52,600
+86% +$7.8M 0.03% 401
2025
Q3 		$7.61M Buy
61,500
+20,200
+49% +$2.15M 0.01% 830
2025
Q2 		$4.1M Buy
41,300
+3,900
+10% +$317K 0.01% 1061
2025
Q1 		$3M Sell
37,400
-15,100
-29% -$1.52M 0.01% 1199
2024
Q4 		$5.48M Buy
+52,500
New +$5.67M 0.01% 857

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

PEAK6's MKSI Position: Q2 2026 in Review

PEAK6 opened a new position in MKS Inc (MKSI) in Q2 2026: 1 share worth $625. The stake represents ﹤0.01% of the portfolio and ranks #2626 among its holdings. This is a return to the name: PEAK6 previously reported a position in MKSI as recently as Q3 2025.

PEAK6 first reported a position in MKSI in Q4 2024 and has held it in 4 quarters since. The position peaked at $2.54M in Q3 2025. 775 funds tracked by Wall St. Rank hold MKSI as of Q2 2026.

  • PEAK6 held 1 share of MKS Inc worth $625 as of Q2 2026.
  • MKS Inc was a new PEAK6 position in Q2 2026.
  • MKS Inc made up ﹤0.01% of PEAK6's portfolio in Q2 2026, its #2626 holding.
  • PEAK6 first reported a position in MKS Inc in Q4 2024 and has held it in 4 quarters since.
  • PEAK6's MKS Inc position peaked at $2.54M in Q3 2025.
  • 775 funds tracked by Wall St. Rank held MKS Inc as of Q2 2026.

Based on PEAK6's 13F filing for Q2 2026, filed 13 Aug 2026.