(Barrons) Palantir stock, along with Dell and Erie Indemnity are joping the S&P 500. American Airlines, Bio-Rad and Etsy are out. Read more here.

(Washington Post) You have options to click one box to order companies not to blab your personal data. California might soon require it by law. Read more here.

(NYT) In some ways, Y Combinator CEO Garry Tan has already assumed the position of mayor of San Francisco’s tech world. But he shared his thoughts on running for the city’s chief executive job. Read more here.

(Verge) The companies will grant the AI Safety Institute access to major new models for safety testing. Read more here.

(NYT) The multibillion-dollar trading firm said that its billionaire co-chief executives, John Overdeck and David Siegel, would step down. Read more here.

(TechCrunch) Anthropic has published the system prompts for Claude, its family of generative AI models. They instruct the model how it should — and shouldn’t — behave. Read more here.

(NYT) Pavel Durov, the founder of the app, which has more than 900 million users, was taken into custody by the French authorities. Read more here.

(TechCrunch) After fintech Bolt surprised the industry with a leaked term sheet that revealed it is trying to raise at a $14 billion valuation, things got weird. Read more here.

(Gizmodo) Twin profiles of Thiel-backed, defense-minded, Silicon Valley moguls give us a glimpse of the future of war, and America. Read more here.

(The Information) So far, many of the improvements in large language models’ capabilities have stemmed from a surprisingly simple concept: scaling laws. Essentially, researchers have noticed that the more computing power and data you use to train AI models, the better they perform.  Read more here.