Meet the Newest Artificial Intelligence (AI) Stock in the S&P 500. It's Up 5,660% Since 2023, and It Could Still Climb Higher From Here.

North America
Source: The Motley FoolPublished: 09/20/2025, 14:45:01 EDT
AppLovin
S&P 500 Index
AdTech
Artificial Intelligence
Machine Learning
Generative AI
Image source: Getty Images.

News Summary

AppLovin (APP) has been added to the S&P 500 index, replacing MarketAxess, Caesars Entertainment, and Enphase Energy. The digital advertising company is identified as an "AI stock," with its shares having soared 5,660% since the beginning of 2023. At its core, AppLovin leverages its Axon 2 advertising optimizer, built on machine learning AI models, to effectively target ads using years of first-party data. Since its launch in Q1 2023, Axon 2 has driven impressive results, increasing the company's software platform revenue from $1 billion in 2022 to $4.25 billion over the last four quarters. The company is expanding its business beyond in-game ads into connected-TV and e-commerce advertising. It plans to further boost growth through a self-serve platform and the use of generative AI to dynamically select personalized creatives. Despite a high valuation (45 times forward earnings, 37 times sales) and concerns about the scalability of Axon 2, management believes successful implementation and scaling through paid marketing could justify its current price and drive further gains.

Background

The S&P 500 index serves as a benchmark for the U.S. stock market, representing approximately 80% of total U.S. equity market capitalization. Inclusion in the index requires meeting stringent criteria, including a large market cap, consistent profitability, and sufficient stock liquidity, which are reviewed and adjusted quarterly by a selection committee. AppLovin is an adtech company specializing in providing efficient advertising solutions for marketers through its AI-powered Axon 2 platform. This platform uses machine learning models to optimize return on ad spend based on first-party data. The company's recent addition to the S&P 500 highlights its rapid growth and market recognition within the AI-driven digital advertising sector.

In-Depth AI Insights

What are the deeper implications of AppLovin's S&P 500 inclusion for its position in the AI-driven adtech landscape? - This inclusion validates not just its financial performance but also the demonstrable ability of AI to generate substantial revenue and profit in practical business applications, particularly within the highly competitive adtech sector. - It reinforces AppLovin's narrative as an "AI stock," positioning it alongside more foundational AI infrastructure companies (like chipmakers or large language model developers) and potentially attracting a broader range of institutional investors seeking returns from applied AI rather than pure technological AI. - Given the current Trump administration's emphasis on technological innovation and American corporate competitiveness, AppLovin's rise could be framed as another example of U.S. leadership in critical tech domains, even if its core business is advertising rather than hard tech. What do AppLovin's Axon 2 platform success and future generative AI integration signify for the broader Advertising Technology (AdTech) industry? - AppLovin's success signals an accelerated industry-wide shift towards deeper AI-driven optimization and automation in AdTech. Traditional ad platforms that fail to effectively integrate AI for enhanced advertising efficiency and personalization risk obsolescence. - The application of generative AI in ad creative generation will significantly reduce content creation costs and time, allowing for unprecedented speed and scale in personalized ad content. This could spark an "arms race" in ad effectiveness, compelling all players to invest more heavily in AI resources. - Such developments may also lead to increased scrutiny over data privacy and AI ethics, as highly personalized ad creatives and targeting could encroach on sensitive areas of consumer privacy, potentially prompting new regulatory frameworks in the coming years. Given AppLovin's high valuation and potential scalability challenges, how should investors assess its long-term investment prospects? - Investors must look beyond short-term performance spikes and delve into the moat provided by Axon 2. If its algorithmic edge can consistently identify "undervalued ad inventory" and sustain high returns on ad spend, the premium valuation might be partially justified. - The key will be its execution on the self-serve platform and generative AI integration. If these new capabilities can effectively broaden its client base and boost conversion rates without significantly increasing marginal costs, the growth flywheel effect will continue. - However, if the marginal value of ad inventory diminishes as more marketers adopt similar AI tools, or if regulatory environments impose restrictions on data usage, AppLovin's "high return" model could face pressure. Investors should closely monitor changes in the competitive landscape and regulatory risks, beyond just its technological innovation potential.