Bill Ackman of Pershing Square Capital Management and Andreas Halvorsen of Viking Global Investors are two billionaires worth following for investment ideas. They are entrusted with billions in assets to manage for clients, and that reflects a career of making smart investment choices.

The growing adoption of AI in the digital ad market should help this social media giant deliver robust earnings growth and stock upside over the next three years.

During that time, Appian has evolved into an artificial intelligence (AI)-based process automation company, which is sometimes called low-code or process mining. It's streamlined its business through layoffs and cost cuts,

But one stock that's been holding up quite well is artificial intelligence (AI) giant and "Magnificent Seven" member Alphabet (NASDAQ: GOOGL) (NASDAQ: GOOG). Following an impressive earnings report on Oct. 29, shares of Alphabet popped as much as 10%.