What is Amazon Share of Voice — and how do you measure it?

Amazon Share of Voice is the part of a search results page that belongs to your brand. Here's how to measure it properly — organic and paid, weighted by position — and how to use it to steer your ad budget.

Updated October 18, 2026 · 7 min read

Share of Voice in one sentence

Amazon Share of Voice (SOV) is the share of the visible places on an Amazon search results page that show your brand — your organic listings plus your ads — compared with every other brand on the page.

If a shopper searches "wireless earbuds" and 10 of the 40 products and ads on page one are yours, your raw Share of Voice is 25%. The remaining 75% is split between your competitors, and that split is exactly what you want to know.

Why it matters more than impression share

Amazon Ads reports impression share for your own campaigns: how often your ad showed when it was eligible. It tells you nothing about the organic results, nothing about the brands that took the rest of the page, and nothing about how your total presence changes when you raise or cut a bid.

• It shows the whole page. Organic and paid together, the way a shopper sees it.
• It names your real competitors. Not the ones you assume — the ones actually holding page one for your keywords.
• It shows whether ads add visibility or just replace organic. If your paid share goes up and your organic share goes down by the same amount, you're paying for clicks you would have had anyway.

Why position has to count

Not every spot on the page is worth the same. The Sponsored Brands banner above the results and the first row of products get far more attention than a listing at the bottom of the page. A useful Share of Voice gives each spot a weight, so owning the top of the page counts more. These are the weights YourSOV uses by default (each project can change them):

Your weighted Share of Voice is the sum of the weights of the spots you hold, divided by the sum of the weights of every spot on the page. Owning the banner alone can be worth more than five listings further down.

How to measure it reliably

1. Search from a real delivery location. Amazon results change with the ZIP code. A check from your office in another country doesn't show what US shoppers see.
2. Sample more than once a day, at different times. Ad auctions change through the day as budgets run out. One check at 9am is a snapshot, not a trend.
3. Attribute every spot to a brand. Including Sponsored Brands banners and videos, which carry the most weight and are the easiest to miss.
4. Track the same keywords every day. Share of Voice is most useful as a trend: is it going up after a listing change, a new campaign or a competitor's launch?

Doing this by hand for even 20 keywords takes hours a week. That's the job YourSOV automates: every keyword is scanned twice a day from the US location you choose, and each result is attributed to a brand.

Which keywords to track

• Branded: your brand name, and brand + product ("voltix earbuds"). Competitors often bid here — see our brand defense guide.
• Category: the generic searches that drive most of your sales ("wireless earbuds", "earbuds for running").
• Competitor: rivals' brand names, if you advertise on them.

Turning Share of Voice into decisions

• High organic, low paid share on a keyword? Test lowering bids there — you may keep most of the visibility for less.
• Low share where a competitor dominates? Look at what they do differently: banner, video, price, reviews.
• Share dropping after a change? Check whether it's organic (listing, stock, reviews) or paid (budget, bids) before reacting.