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Lumentum and Western Digital stocks rise on AI and strong earnings; Snowflake and Alphatec stocks fall on guidance concerns.

Company Fundamentals
28 Apr 2026
Seeking Alpha
View Source
Neutral
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Lumentum Holdings and Western Digital saw their stocks and convertibles rally due to Lumentum's key role in AI and cloud data centers and Western Digital's strong earnings and raised guidance. Conversely, Snowflake's stock declined as investors were disappointed by its FY27 guidance and concerns over AI impacting its business model. Alphatec Holdings' stock also fell after issuing conservative 2026 EBITDA guidance, signaling slower margin growth due to investments in expanding its sales force. These movements reflect investor reactions to company outlooks amid evolving tech and AI trends.

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