Core Insights - Arm Holdings (ARM) faces increasing risks of slower growth in China due to the country's shift towards RISC-V architecture, which contributed 19% of ARM's total sales in fiscal 2025, with revenues from China rising only 7.5% year over year [1][7] Group 1: Market Dynamics - China's ambition to localize its semiconductor ecosystem is driving the promotion of RISC-V as an alternative to Arm's proprietary models, offering cost advantages and design flexibility [2] - Major Chinese tech firms, including Alibaba Cloud, Huawei, Tencent, and ZTE, are backing RISC-V, which raises competitive pressure on ARM's presence in China [3][7] Group 2: Competitive Landscape - NVIDIA and AMD are closely monitoring China's shift to RISC-V, as it poses a threat to their market positions in AI hardware and server chips [4][5] - AMD's EPYC server chips directly compete with China's new Lingyu RISC-V server chip, indicating potential market share erosion for AMD if RISC-V adoption accelerates [5] Group 3: Financial Performance - ARM's stock has gained 18% year to date, outperforming the industry's 5% rally, but it trades at a forward price-to-sales ratio of 31.5, significantly higher than the industry's 8.1 [6][8] - The Zacks Consensus Estimate for ARM's earnings has been declining over the past 60 days, reflecting potential challenges ahead [10]