Google AI Overviews Appear on 88% of Commercial Searches, Study Finds

Key takeaways

A Semrush study of 400 U.S. desktop commercial keywords found that Google AI Overviews appeared for 88% of the tracked terms in August 2026. Ecommerce terms had 85% coverage in the sample. These are study coverage rates, not the share of all Google searches, and the study did not measure clicks, conversions, or revenue.

• The study tracked the same 400 keywords across five commercial query types and three industries from September 2025 through August 2026.
• When weighted by the sample's estimated monthly search volume, AI Overview coverage reached 97%; that is still a result for this selected sample, not a universal Google-wide rate.
• The practical takeaway for online stores is to measure which product and comparison queries actually trigger AI Overviews, then protect the underlying organic landing pages and conversion path.

What the study measured

Search Engine Land reported Semrush's analysis on October 22, 2026. The tracked U.S. desktop sample covered banking, ecommerce, and software, including searches such as product reviews, comparisons, alternatives, and “best X for Y.” In the study, AI Overview coverage rose from nearly 33% to 85% for ecommerce keywords between September 2025 and August 2026.

That is evidence that AI Overviews became common across the commercial terms in this dataset. It is not evidence that every ecommerce query triggers an Overview, that Google has announced a new ranking factor, or that the feature caused a particular traffic decline. The article explicitly notes that the study did not measure clicks or conversions.

Why ecommerce coverage matters

An AI Overview can change what a search result page looks like for a product comparison or review query. For a store, the exposure question is therefore more specific than “Are AI Overviews growing?” Ask which of your own high-value queries trigger them, what sources are cited, and whether your product or category page still earns impressions and qualified visits.

Google also announced on October 15 that it is making inline links in AI Mode and AI Overviews more prominent, testing a section for official websites on some searches, and expanding timely-article carousels to more locations and languages. These are product changes; they do not guarantee that any particular site will be cited or receive more clicks.

What store owners should do

1. Build a query cohort. In Search Console, export non-branded product, category, review, and comparison queries. Separate them by intent and landing page rather than treating all ecommerce traffic as one group.
2. Record the baseline. Track impressions, clicks, click-through rate, average position, and organic conversions by query and page. Compare like periods and annotate site changes; the study itself cannot explain your store's results.
3. Strengthen the destination page. Keep product facts, compatibility, availability, shipping, returns, and first-hand comparisons accurate and easy to verify. Link product pages to useful buying guidance and make the next step clear.
4. Check the result page directly. Sample your most valuable queries in the target market and device. Note whether an Overview appears and which sources it links to; layouts can vary by query, location, and time.
5. Avoid unsupported “AI ranking hacks.” The study does not establish that a particular schema type, AI crawler file, or answer-block format earns an Overview citation. Use structured data where it accurately describes visible page information, and follow Google's published documentation.

What the study cannot tell us

The sample is limited to 400 U.S. desktop commercial keywords in three industries. It does not represent every country, device, query type, or store. Coverage measures whether an AI Overview appeared, not whether people clicked it, whether a brand was named, or whether the store gained or lost sales. Treat the percentages as a reason to investigate your own search data—not as a forecast for your site.

Quick answers

How often did AI Overviews appear for ecommerce searches in this study?

Semrush reported 85% coverage for the ecommerce keywords in its 400-keyword U.S. desktop commercial-search sample in August 2026. That is not a rate for all ecommerce searches.

Does 85% coverage mean ecommerce sites lost 85% of clicks?

No. The study measured how often an Overview appeared; it did not measure clicks, conversions, or revenue.

What changed in Google AI Overviews in October 2026?

Google said on October 15 that it was surfacing inline links higher more often, testing a prominent section for official websites on some queries, and expanding timely-news carousels. Availability can vary, and Google did not promise traffic increases for publishers.

What should an ecommerce SEO team measure first?

Start with its own high-value query and landing-page data: impressions, clicks, CTR, rankings, and conversions. Then sample the live search results for those queries to see whether AI Overviews appear.

Sources

• Search Engine Land: Google AI Overviews nearly double for commercial keywords: Study — Semrush's sample, coverage figures, and study limitations.
• Google: More ways to connect with the web from Search — October 15, 2026 changes to links, official-site results, and timely-article carousels.
• Google Search Central: AI features and your website — Google's current guidance for AI features in Search.

Last checked: October 23, 2026.