
Cooke & Bieler named MKS its biggest contributor in the second quarter, citing AI-related demand and a stronger-than-expected quarterly report.
MKS Inc. was the largest contributor to Cooke & Bieler’s Mid Cap Value Equity Strategy in the second quarter of 2026. The firm said investors responded positively to rising demand for semiconductors tied to AI. At 17:03 UTC on Sept. 29, MKS shares traded at $262.61, up 1.64% since the previous close.
Cooke & Bieler also pointed to MKS’s first-quarter report, which showed a meaningful year-over-year revenue increase and earnings per share above consensus, according to the firm’s investor letter.
The strategy returned 8.05% in the quarter, trailing the Russell Midcap Value Index’s 13.4% return. Cooke & Bieler said an underweight in information technology drove nearly all of that shortfall as the sector rose 60% on AI spending.
The firm said AI-related market momentum was concentrated and described the environment as speculative, with passive investment flows playing a role. It also raised concerns about whether AI enthusiasm can be sustained without tangible financial results, while saying it seeks businesses less vulnerable to AI disruption.
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Source: Yahoo Finance