Share of Search

What it actually measures

Share of Search takes organic search volume for your brand name and puts it in proportion to search volume for the whole competitive set. If your brand gets 4,000 monthly searches and your category (you plus your three main competitors) gets 20,000 combined, your Share of Search is 20%.

It is a demand signal, not a vanity metric. People searching for your brand name have already formed enough awareness or intent to type it into Google. That is closer to a buying signal than a like or a comment.

Why it matters for B2B sellers

Most B2B sellers live downstream of marketing. By the time a prospect fills out a form or takes a cold call, their search behavior already happened weeks or months earlier. Share of Search is one of the few metrics that shows you drifting up or down in consideration before it shows up in pipeline numbers. Kantar has noted it is sensitive to short-term marketing activity but correlates with brand salience in the medium term and market share in the long term, which is exactly the lag structure a sales org should care about.

If your Share of Search is climbing while a competitor's is flat, that's a lead indicator worth acting on: double down on the content and campaigns driving it, brief sales on the shift, watch for it to convert into inbound volume a quarter or two out.

The misconception

People confuse Share of Search with Share of Voice. Share of Voice counts mentions, impressions, and engagement across social and media. It tells you how loud you are. Share of Search tells you how many people cared enough to go looking for you on their own, unprompted, with intent. A brand can dominate Share of Voice through paid amplification and still lose Share of Search because nobody is actually typing their name into a search bar. Loud is not the same as wanted.

How it's actually used

Marketers pull this from search volume tools (Google Trends, Ahrefs, SEMrush) by comparing branded search terms across a defined competitor set, then tracking the ratio monthly or quarterly. The number only means something in proportion, so the first job is defining the right competitive set. Get that wrong and the metric tells you nothing.