Microsoft stock breaks $513 as Azure and Copilot growth accelerates

Microsoft's AI monetization story is driving the stock, which broke $513 on the back of 43% year-over-year Azure revenue growth and Microsoft 365 Copilot surpassing 30 million paid seats. GAAP EPS came in at $4.81, boosted by a $3.2 billion gain from Microsoft's Anthropic investment. Bank of America raised its price target from $500 to $600, attributing the upgrade to AI monetization across both Azure infrastructure and Copilot applications, and Azure annual revenue reportedly surpassed $100B for the first time with remaining performance obligations of $678B.

At Build 2026, Microsoft split its agent stack into three layers: Microsoft Foundry (hosting 11,000+ models including the new MAI family, GPT-5.5, and Claude), Agent Framework 1.0, and Agent 365 governance. Foundry recently added five Claude capabilities — Structured Outputs, Web Search, Web Fetch, MCP Connector, and Tool Search. Microsoft is also preparing to introduce its Maia 300 AI chip this September.

The model-agnostic strategy is the durable competitive angle. By hosting OpenAI, Anthropic, Meta and its own MAI models, Microsoft captures spend regardless of which lab leads — a posture that could be reinforced if OpenAI's Astra hitting a 'critical' cyber threshold creates deployment friction, as one analyst argued it 'could become a headache for Microsoft stock.' The scale of RPO backlog ($678B) signals durable enterprise AI demand, though skeptics watch whether Copilot seat growth converts to sustained per-seat usage rather than shelfware.