Weiss Asset Management’s MKS Inc MKSI Stock Holding History

Weiss 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 Q2	$326K	Buy	+734	New	+$230K	﹤0.01%	545
2025 Q4	–	Sell	-111,075	Closed	-$13.7M	–	753
2025 Q3	$13.7M	Buy	+111,075	New	+$11.8M	0.16%	74
2024 Q4	–	Sell	-17,009	Closed	-$1.85M	–	784
2024 Q3	$1.85M	Buy	+17,009	New	+$2.02M	0.04%	339
2024 Q1	–	Sell	-18,561	Closed	-$1.91M	–	420
2023 Q4	$1.91M	Buy	+18,561	New	+$1.51M	0.09%	110
2022 Q2	–	Sell	-1,399	Closed	-$210K	–	744
2022 Q1	$210K	Buy	+1,399	New	+$217K	﹤0.01%	705

Other funds holding MKSI

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Point72 Asset Management Stamford, Connecticut $90.7B AUM 77.13% 1-Year Est. Return

Capital International Investors Los Angeles, California $484B AUM 34.9% 1-Year Est. Return

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

Weiss Asset Management's MKSI Position: Q2 2026 in Review

Weiss Asset Management opened a new position in MKS Inc (MKSI) in Q2 2026: 734 shares worth $326K. The stake represents ﹤0.01% of the portfolio and ranks #545 among its holdings. This is a return to the name: Weiss Asset Management previously reported a position in MKSI as recently as Q3 2025.

Weiss Asset Management first reported a position in MKSI in Q1 2022 and has held it in 5 quarters since. The position peaked at $13.7M in Q3 2025. 773 funds tracked by Wall St. Rank hold MKSI as of Q2 2026.

Weiss Asset Management held 734 shares of MKS Inc worth $326K as of Q2 2026.
MKS Inc was a new Weiss Asset Management position in Q2 2026.
MKS Inc made up ﹤0.01% of Weiss Asset Management's portfolio in Q2 2026, its #545 holding.
Weiss Asset Management first reported a position in MKS Inc in Q1 2022 and has held it in 5 quarters since.
Weiss Asset Management's MKS Inc position peaked at $13.7M in Q3 2025.
773 funds tracked by Wall St. Rank held MKS Inc as of Q2 2026.

Based on Weiss Asset Management's 13F filing for Q2 2026, filed 14 Aug 2026.