Share of Voice (SoV) is the share of visibility a brand holds in a given space, measured against its competitors. If you picture every place a shopper could see brands competing, your Share of Voice is how much of that space is yours. It is one number, easy to track over time, and it tells you whether you are showing up more or less than the brands you care about.
The term started in advertising, where Share of Voice meant your slice of total ad spend or total impressions in a category. That marketing meaning still holds: a brand running 30 percent of the ads in a market has a 30 percent Share of Voice. But the idea travels well beyond ads, which is why you also see it applied to search rankings, social mentions and, the version Crawlbot measures, the retail digital shelf.
On a retailer's website, the space that matters is the category page and the search results page. When a shopper filters to "laptops" on a retailer, they see a grid of product listings. Retail Share of Voice is the share of those listings your brand occupies. It answers a plain question: out of everything the shopper actually sees on the shelf, how much is us?
This is a good proxy for real visibility because it counts positions, not catalogue size. A brand can have hundreds of products in a retailer's back-end database and still be nearly invisible if none of them surface on the pages people browse. Share of Voice measures presence where it counts. For more on why this matters for a brand, see our piece on measuring brand visibility at retailers, and the broader take on Share of Voice in ecommerce.
The formula is simple. In words:
Share of Voice = your brand's listings, divided by all listings in the space, times 100.
The "space" is whatever you have decided to measure: one category page, one search term, or a set of them combined. The key is that the numerator and denominator use the same unit. On the shelf, that unit is a listing, meaning one product in one position on one page scrape.
Say you sell laptops and you want your Share of Voice on a single retailer's laptop category page. You scrape the page and count the listings:
| Measure | Count |
|---|---|
| Your brand's listings on the page | 45 |
| Total listings on the page | 300 |
| Share of Voice | 15% |
Forty-five divided by 300 is 0.15, so your Share of Voice on that page is 15 percent. That is the whole calculation. Everything else is about doing it honestly and repeatedly rather than once.
Not every listing is earned. Many retailers now sell sponsored slots, so a brand can pay to appear at the top of a category page regardless of how well its products rank on their own. If you count sponsored placements in with the rest, your Share of Voice looks healthier than your organic position really is.
The fix is to split the number in two: organic Share of Voice (positions you hold without paying) and sponsored Share of Voice (positions you bought). Organic tells you how strong your listings are on their merits. Sponsored tells you how much you are spending to be seen. A brand at 20 percent total but only 6 percent organic is renting most of its visibility, and that is a very different story from a brand at 20 percent that earned it all. We go deeper on this in organic vs sponsored Share of Voice.
A category page is not fixed. Stock moves, sponsored slots rotate, retailers reorder results, and a promotion can flood the page with one brand for a day. If you check once, you might catch an unusually good or bad moment and draw the wrong conclusion.
Averaging Share of Voice across many scrapes over days or weeks smooths out that noise and gives you a number you can act on. It also lets you see trends: a brand that quietly slips from 15 percent to 11 percent over a month has a problem that a single snapshot would hide. This kind of steady movement under the leading brand is often where the real action is, which we cover in what the number one spot hides.
Visibility drives clicks, and clicks drive sales. Shoppers rarely scroll far, so the brands that fill the top of the page get a disproportionate share of attention and purchases. A higher Share of Voice tends to mean more of both. Tracking it over time tells you whether you are winning or losing the shelf before it shows up in your sales figures, which gives you time to react: fix content, adjust range, or rethink sponsored spend.
Crawlbot tracks Share of Voice on the consumer-electronics digital shelf hourly across the UK, Poland, South Africa and the Nordics, roughly 7.4 million listings a month across 34 retailers. Every scrape counts each listing as one product in one position on one category-page pass, that is, exactly what a shopper would see, with organic and sponsored kept apart and results averaged over time. That is the same method the worked example above uses, just run continuously at scale.
7.4 million listings, 34 retailers across the UK, Poland, South Africa and the Nordics. Free monthly report with brand rankings, the sponsored split and content benchmarks.
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