Meta stock had a roller coaster start to 2024, first regaining a $1 trillion market cap before tumbling after the first quarter (Q1) earnings. The big sell-off came as CEO Mark Zuckerberg pledged significant spending increases over the coming years to develop "the world's leading AI assistant." Meta launched major updates to its AI chatbot in April, integrating it across Facebook, Instagram and other apps as it tries to challenge OpenAI's viral ChatGPT release.