Oppenheimer Asset Management’s MKS Inc MKSI Stock Holding History

Oppenheimer Asset 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	$492K	Sell	2,141 -817	-28%	-$185K	0.01%	871
2025 Q4	$473K	Buy	+2,958	New	+$439K	0.01%	827
2020 Q1	–	Sell	-132	Closed	-$15K	–	1591
2019 Q4	$15K	Sell	132 -146	-53%	-$15.3K	﹤0.01%	1469
2019 Q3	$26K	Buy	278 +85	+44%	+$7.02K	﹤0.01%	1431
2019 Q2	$15K	Buy	+193	New	+$16.3K	﹤0.01%	1500
2018 Q3	–	Sell	-11,807	Closed	-$1.13M	–	1165
2018 Q2	$1.13M	Buy	11,807 +408	+4%	+$44.5K	0.03%	564
2018 Q1	$1.32M	Buy	11,399 +6,149	+117%	+$675K	0.03%	516
2017 Q4	$496K	Hold	5,250	–	–	0.01%	790
2017 Q3	$496K	Sell	5,250 -61	-1%	-$4.99K	0.01%	794
2017 Q2	$357K	Buy	+5,311	New	+$402K	0.01%	872

Other funds holding MKSI

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

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 Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Capital International Investors Los Angeles, California $427B AUM 29.17% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

Oppenheimer Asset Management's MKSI Position: Q1 2026 in Review

Oppenheimer Asset Management reduced its MKS Inc (MKSI) stake by 28% in Q1 2026, selling an estimated $185K and leaving 2,141 shares worth $492K. The position accounts for 0.01% of the portfolio, ranked #871.

Oppenheimer Asset Management first reported a position in MKSI in Q2 2017 and has held it in 10 quarters since. The position peaked at $1.32M in Q1 2018. 616 funds tracked by Wall St. Rank hold MKSI as of Q1 2026.

Oppenheimer Asset Management held 2,141 shares of MKS Inc worth $492K as of Q1 2026.
Oppenheimer Asset Management sold 817 MKS Inc shares in Q1 2026, an estimated $185K.
MKS Inc made up 0.01% of Oppenheimer Asset Management's portfolio in Q1 2026, its #871 holding.
Oppenheimer Asset Management first reported a position in MKS Inc in Q2 2017 and has held it in 10 quarters since.
Oppenheimer Asset Management's MKS Inc position peaked at $1.32M in Q1 2018.
616 funds tracked by Wall St. Rank held MKS Inc as of Q1 2026.

Based on Oppenheimer Asset Management's 13F filing for Q1 2026, filed 24 Apr 2026.