Alphabet Class A

• OpenAI is under pressure as Google, Anthropic gain ground - Sam Altman reportedly sent a memo to his staffers outlining a "code red" effort to improve ChatGPT.
• YouTube's new AI deepfake tracking tool is alarming experts and creators - A YouTube tool that uses creators' biometrics to remove AI-generated videos also allows Google to train its AI models on that sensitive data, experts told CNBC.
• Nvidia-backed $4 billion AI startup announces major London expansion - U.S.-based Luma AI is targeting 200 hires in the U.K. by early 2027 as a wave of North American tech companies eye European growth.
• AI stock rally may be driven by fear of missing out, but strategists say hold tight - The European Central Bank on Wednesday warned of high valuations and increased concentration of global stocks.
• A 'seismic' Nvidia shift, AI chip shortages and how it's threatening to hike gadget prices - The AI infrastructure buildout is creating shortages of components including various types of chips that are also used in consumer electronics.
• Forget AI spending — the biggest risk to this stock market is speculative junk - The idea that these alternative investments somehow create anything en masse is almost ludicrous.