Written by: Rita

Two years ago, Wall Street expected Google's search advertising revenue growth rate to be 8% in 2026, which has now doubled to 16%. Meta's revision is even more dramatic, from 12% to 26%. AI is rewriting the growth curve of digital advertising, with Meta expected to surpass Google Search in the fourth quarter of 2026 to become the world's largest single advertising platform. However, the true market outperformers this year are e-commerce stocks.

On August 31, Bernstein released a report on the digital advertising industry, indicating that AI is comprehensively driving advertising growth by improving content recommendations, enhancing user engagement, shortening the path from discovery to purchase, and improving ad targeting and delivery effectiveness. In the first half of 2026, the digital advertising basket is expected to grow by 21% year-on-year, far exceeding 6% in 2022.

AI Strengthens Leading Platforms

Recent quarters have shown that AI is strengthening rather than disrupting the competitive positions of leading advertising platforms. Meta, Google, and Amazon are recording their strongest advertising growth in years, despite already having a huge base. This reflects the advantages of large platforms: larger data sets, more precise audience targeting, better automation tools, and more accurate measurement capabilities. All of these enable them to deploy AI more effectively and at scale.

Meta may benefit the most from AI. Unlike search, where users explicitly express their intent, Meta must anticipate the content and ads that users are most likely to engage with. AI-driven improvements have higher incremental value in content recommendation, ad targeting, and measurement. Meta has restructured its AI-driven content recommendation algorithms and ad delivery platform to better match ads to the right audience at the right time and to attribute conversion events accurately.

Advantage+ achieved a run rate of $75 billion in annual revenue by the second quarter of 2026, with multiple tools contributing to compound growth. The management team repeatedly emphasizes the persistence of growth trends and the visibility of growth over the years.

Meta Set to Surpass Google Search

Bernstein estimates that the fourth quarter of 2026 will be the first quarter in which Meta's advertising revenue surpasses that of Google Search, although Google Search may briefly regain its lead in the first quarter of 2027. The market consensus is more conservative, pointing to the third quarter of 2027. If comparing Meta with Google's total advertising pie, which includes YouTube and Google Network, Meta's total share may not surpass until after 2030.

Meta's share of incremental advertising dollars continues to expand. In the second quarter of 2026, Meta accounted for about 2 percentage points of the global digital advertising incremental, while Amazon accounted for 0.5 percentage points. Together, they captured nearly half of the incremental advertising spending. The share of Google Search, on the other hand, fell by 1.1 percentage points.

E-commerce Platforms as Unexpected Winners

The irony in 2026 is that, while the fundamentals of digital advertising have never been so strong, advertising stocks have underperformed. Meta and Google have been punished by the market due to pressures on the other end, unprecedented AI capital expenditures, uncertain investment returns, and questions about the sustainability of long-term growth.

E-commerce companies have enjoyed the same AI tailwind but at much lower costs. AI directs consumers more efficiently to merchants' websites, improving conversion rates and enhancing marketing spending efficiency. The revenue revisions for the e-commerce basket in 2026 are comparable to those of the digital advertising basket, but e-commerce stocks have significantly outperformed this year.

In the e-commerce basket tracked by Bernstein, the proportion of marketing expenses to revenue has mostly been declining. The market is viewing e-commerce as a low-risk, low-capital way to participate in the digital advertising cycle.

Investment Recommendations and Risks

Bernstein gives Meta, Pinterest, and Amazon an overweight rating, while Google, Snap, and Reddit are rated in line with the broader market. The target price for Meta is $800, based on a 6.7 times EV/sales valuation method for 2027 and a 50/50 DCF valuation method. The target price for Amazon is $320.

In terms of risks, Meta faces execution risks regarding whether AI investment can continuously drive growth, as well as the possibility of an advertising market slowdown. Amazon needs to pay attention to slowing AWS growth and intensifying retail competition. Overall, while the trend of AI-driven advertising growth is strong, the market's patience for AI capital expenditure is narrowing.

Disclaimer

This article is a summary and interpretation of a third-party brokerage research report (Bernstein, August 31, 2026) by Chao Xiang Research, combined with publicly available market information. The ratings, target prices, earnings forecasts, and related judgments cited in this article are the opinions of the brokerage firm's analysts and only represent the views of their respective institutions, not the views of Chao Xiang Research, nor do they constitute any investment advice.

Markets are risky, and decisions should be independent. This article should not be used as the basis for buying or selling any securities.