Shares of Arm Holdings slid 6.1% to $211.07 on Wednesday, extending a brutal month-long rout, after the chip-design giant's quarterly beat was overshadowed by a warning that its bread-and-butter smartphone royalty business is losing momentum.
• The Numbers Were Strong — But the Forecast Spoiled the Party. Revenue rose 22% year over year to a record $1.29 billion, and adjusted earnings of $0.45 per share cleared the $0.40 consensus by 12.5%.
Royalty revenue grew 22% to $715 million, with data center royalties more than doubling year over year. Yet none of that mattered once CFO Jason Child told analysts what's ahead: smartphone royalty growth of roughly 10% to 15% next quarter, blaming memory shortages — "the only real weakness in royalties is really on the smartphone side."
Previously, investors had anticipated royalty growth of about 20%. That gap — roughly five to ten percentage points of missed expectations — hit the stock hardest.
• Smartphones Still Pay Most of the Bills. Royalties from handset makers account for much of Arm's revenue, and though that market is still expanding for the company, the pace is slowing.
Management has warned about potential negative growth in smartphone units due to memory chip shortages, and given Arm's dominant share of mobile CPU designs, any handset headwind directly impacts royalty expectations. Investors are left weighing whether this is a one-quarter hiccup or a deeper cyclical downturn.
• Data Centers Are Booming, But Can't Offset the Worry. CEO Rene Haas noted Arm has shipped 1.5 billion data center cores in six years, with roughly 30% shipped in just the last nine months.
The company has booked more than $2 billion in customer demand for its new data center CPU across fiscal 2027 and 2028. That's a powerful long-term story — but it hasn't yet grown large enough to make smartphone weakness irrelevant.
• A Sky-High Valuation Leaves No Room for Misses. Arm entered earnings trading at roughly 82 times trailing earnings, leaving the stock "highly sensitive to any guidance that fails to significantly exceed Street expectations."
The stock had already fallen nearly 28% in the month before earnings. At that kind of premium, even a modest forecast miss triggers outsized selling — exactly what happened here. Until Arm's fast-growing AI business becomes big enough to anchor the investment case on its own, any stumble in smartphones will keep punishing the stock.