Investors continue to underestimate artificial intelligence (AI), the secular tailwinds behind the chipmaker's supercharged growth.

Wall Street's AI heavyweights added a combined half a trillion dollars in stock market value late on Wednesday after quarterly reports from Microsoft and Meta Platforms showed massive investments in the emerging technology were paying off.

The parent company of Facebook and Instagram continues to exceed expectations for ad sales. Analysts are less sure about its big swings.

Meta CEO Mark Zuckerberg published a plan for "personal superintelligence" in AI ahead of the Meta second quarter earnings report to come later Wednesday.