This week in AI stocks was a tale of two giants. Microsoft (MSFT) absolutely crushed it, soaring 15% to $451 on renewed optimism around its AI monetization and enterprise deals. Meanwhile, Meta (META) plummeted 9.7%, likely spooked by concerns over AI capex and user growth. Palantir (PLTR) also slid 6.8%, reflecting profit-taking after its massive run. NVIDIA (NVDA) was flat, but that’s hardly a bad week—its steadiness suggests investors are waiting for the next catalyst. Alphabet (GOOGL) and Amazon (AMZN) both posted modest gains, while C3.ai (AI) bucked the trend with a small uptick. The biggest narrative? Microsoft’s rise underscores that investors are rewarding AI leaders with clear roadmaps to profits, while punishing those with heavy spending and uncertain returns. Why it matters: AI’s market is maturing—investors are now demanding tangible results, not just promises, which will separate the durable winners from the hype-driven losers.