Arm Holdings plc.

Arm Holdings delivered a split verdict for fiscal Q1 2027, posting revenue of $1.29 billion, a 22.4% year-over-year gain that edged past the $1.27 billion consensus by 1.70%, while earnings per share of $0.25 fell well short of the $0.40 analyst estimate, missing by 38.09% and rattling investors who had priced the stock at a demanding premium heading into the print. The earnings shortfall traced directly to a 28% surge in operating expenses to $1.16 billion, with R&D alone reaching $838 million as Arm accelerated headcount growth and share-based compensation climbed to $343 million, compressing the operating margin to 7% from 11% a year ago. Net income more than doubled to $270 million, but that figure was heavily flattered by $128 million in unrealized gains on equity investments, masking the underlying pressure on core operating profitability. The results arrived against a backdrop of recalibrated investor expectations around Armv9 royalty growth and elevated valuation sensitivity across the semiconductor sector, factors that had already weighed on the stock in the days preceding the report.