Shares of British chip designer Arm fell 8.22% in premarket trading on Thursday, as disappointing revenue guidance clouded a positive sales quarter driven by demand for artificial intelligence applications.
Arm reported fourth-quarter revenue of $928 million Wednesday, marking a 47% year-over-year rise.
Arm's royalty revenues, meanwhile, grew 37% year-over-year to $514 million, with the company citing increasing penetration of its recently introduced Armv9-based chips.
For the 2025 fiscal year, Arm expects revenue to come in between $3.8 billion and $4.1 billion.
Analysts were expecting full-year 2025 revenue of $4 billion.
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