AppLovin Is the Worst-Performing Stock in the S&P 500 This Year. Has the Market Overreacted?

APP has dropped 65% in 2026, making it the worst performer in the S&P 500 this year, according to a Motley Fool analysis. The selloff is tied to concerns over AI disruption, yet the company's reported fundamentals remain strong: 56% revenue growth and 66% profit margins.

The valuation reset is the core of the contrarian case. APP now trades at roughly 18x trailing earnings, a far cry from the inflated multiple it carried at the start of the year. The analyst argues the market may have overreacted, framing the stock as a potential buying opportunity for risk-tolerant investors.

Interpretation: a 65% drawdown paired with 56% growth and 66% margins suggests the price move is being driven by sentiment about future disruption rather than by deteriorating results. That gap is what dip-buyers are betting will close. The counterargument is equally clear from the same evidence: the market is pricing a threat that trailing figures cannot capture, so a low trailing multiple may not signal safety if forward earnings are at risk.

Being the S&P 500's weakest name also means APP likely carries heavy positioning and elevated volatility, a setup that cuts both ways.