A single line in Meta's guidance wiped out billions in market cap while the underlying business barely budged.

Meta Platforms Inc. stock has delivered strong gains in 2026, leaving investors debating whether to buy more shares or lock in profits as the company bets heavily on artificial intelligence while its core advertising business continues to rebound.

The owner of Facebook and Instagram saw its revenues and profits soar more than 30 percent, but AI costs remain high and lawsuits remain a threat.

Shares of Meta are trading roughly 41% lower than their price target — one of the widest dislocations among mega-cap tech.

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Meta released a new AI model, prompting a wave of fresh bullishness from Wall Street's top equity research desks.