This week was a mixed bag for AI stocks, with Nvidia bucking the trend while most others took a hit. NVDA climbed 3.06% to $208.76, likely buoyed by AMD’s new Helios rack challenge—competition that validates Nvidia’s dominance while investors bet it will weather the storm. The rest of the market wasn’t so lucky: GOOGL plunged 9.72%, AMZN fell 6.34%, META dropped 6.55%, and MSFT lost 4.85%. Palantir and C3.ai also slid, down 9.15% and 5.67% respectively. The sell-off came amid headlines suggesting AI’s monetization hurdles—like ChatGPT’s paywall for health advice and Claude’s new voice mode plugging into apps—may be deepening investor skepticism about near-term returns. Even YouTube’s crackdown on AI slop reminds us that regulation could squeeze company profits. Why it matters: The AI sector is starting to feel the heat between competitive jabs and a cold-eyed market that wants proof of profit, not just promise.