HP Inc's stock experienced a significant after-hours plunge of 5.27% on Tuesday, following the release of its fiscal first-quarter earnings report.

Despite reporting better-than-expected results with revenue of $14.44 billion (beating estimates of $13.94 billion) and adjusted earnings per share of $0.81 (exceeding the $0.77 estimate), investors reacted negatively to the company's cautious outlook. HP warned that U.S. trade regulations and increasing memory chip costs are expected to pressure its financial performance throughout the fiscal year.

The company stated it now anticipates fiscal 2026 results to be at the low end of its forecast range, citing a "dynamic environment marked by increasing memory costs" and challenges related to supply chain adjustments needed to mitigate the impact of fluctuating tariffs. This cautious guidance overshadowed the positive earnings beat and growth in the company's personal systems unit, which saw an 11% revenue increase driven by AI-powered computers.