Arm Holdings' stock has tripled since the start of 2026 as demand for energy-efficient data center CPUs accelerates alongside AI workloads.

Arm has achieved approximately 50% market share of CPU compute among top hyperscalers in its fourth quarter, according to management, supported by deployments from Nvidia, Amazon, Microsoft, and Alphabet using Arm-based CPU architectures.

Arm is developing the Arm AGI CPU to sell chips directly rather than only licensing designs. Management expects $2 billion in demand across 2027 and 2028, though it is maintaining a $1 billion outlook due to supply chain constraints, and projects $15 billion in chip sales by 2031 generating $7.5 billion in gross profit.

The stock currently trades for 159 times analysts' earnings estimates, which the article describes as an outrageously high valuation—almost 18 times management's $9 earnings per share guidance for 2031.