Berkshire owned about 106 million shares in the parent of Google, worth $37.9 billion at the end of June, according to a regulatory filing released Friday.
Steve Eisman is warning that the artificial intelligence boom has become increasingly dependent on the fortunes of just two companies: OpenAI and Anthropic.
Short interest in SpaceX fell to about 11% of the company's publicly traded shares Wednesday, down sharply from a peak of 34% last week, according to S3.
Brokerages, startups and even retail investors are building AI agents that can help oversee portfolios and automate investing tasks once handled by humans.