Super Micro Computer was up 1.4% in premarket trading after the artificial-intelligence server maker fell 4.1%, making it Monday’s worst performer in the S&P 500. The volatile stock, up 7.9% in 2024 heading into Tuesday,

U.S. equities sank at midday with investors apparently looking to lock in 2024 profits ahead of tomorrow's last trading day of the year.

Tesla isn’t the only company benefiting from a blockbuster narrative—story stocks are everywhere.

Boeing stock tumbles, and shares of Tesla decline. Super Micro continues to fall in the wake of a tech-sector selloff. Apple extends losses, while Palantir loses ground.

AI server maker Super Micro unsurprisingly topped the list of S&P 500's most volatile stocks this year. Investing in stocks allows me to own portions of great businesses. Dividends pay me to own the stocks.