Why is Palo Alto Networks stock sliding today?

Palo Alto Networks' stock is sliding today following its fiscal Q4 FY2026 earnings release after the close on September 1, as investors focus on gross margin compression driven by rising cloud hosting and hardware costs. Despite beating both revenue and adjusted EPS estimates, the margin concern is weighing heavily on sentiment, with non-GAAP operating margin for the full fiscal year coming in at 29.2% and ongoing integration costs from acquisitions adding uncertainty.

The company's FY2027 guidance for Q1 revenue of $3.30–$3.31 billion also tempered enthusiasm, as the broader market environment, including elevated Treasury yields and rising oil prices, contributed to the negative sentiment.

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