The brand metric that moves before your sales do.

A measure hiding in plain sight

Share of search is the proportion of searches for a company's name within total searches for all named competitors in its category. It requires no survey panel, no tracking study and no budget beyond an afternoon.

Analysis by James Hankins across thirty case studies in twelve categories and seven countries found that share of search accounts for roughly 83% of the variation in market share. The relationship has since been examined by the IPA and adopted as an effectiveness measure by advertisers who previously relied on quarterly brand tracking costing six figures.

Its value is not the correlation, which is interesting but static. It is the lag.

Why it leads rather than follows

When share of search rises, market share tends to rise over the following six to twelve months. When it falls, share falls. The direction is typically visible two to four quarters ahead of the sales data.

The mechanism is unremarkable once stated. Someone who has become aware of a company searches for its name well before buying anything. Sales data records the purchase. Search data records the intention that preceded it, sometimes by a year.

This makes share of search one of very few marketing measures that reports on the future rather than the past. Most dashboards are an account of what has already happened, which is why they are poor instruments for deciding what to do next.

What it exposes

The measure is unforgiving in a specific and useful way. A company can run campaigns generating impressions, engagement and even conversions while its share of search declines, because none of that activity is building the memory that produces a named search later.

It also settles an old argument about brand budgets. Brand investment has always been hard to defend internally because its returns arrive after the reporting period in which the money was spent. Share of search moves inside the reporting period, in the direction that predicts those returns.

There is a further reason it has gained prominence in 2026. Branded search still accounts for around 44% of Google queries, and as AI answers absorb informational clicks, branded demand is increasingly the traffic that survives. A metric tracking branded demand is therefore tracking the health of the channel, not only the brand.

How to measure it without a research budget

The method is modest. Assemble the list of named competitors a buyer would realistically consider — not every company in the sector, but the shortlist a customer would actually assemble. Pull monthly search volume for each brand name from any keyword tool, or from Google Trends where volumes are too low to register elsewhere. Express each as a percentage of the combined total.

Record it monthly. The absolute figures matter far less than the trend and the relative position; a small company will hold a small share, and the question is only whether the line is rising against the same set of rivals.

Three cautions apply. Companies whose names are also ordinary words will be overstated and need filtering by modifier. A share that rises because a competitor collapsed is not the same achievement as one that rises because more people are asking for you. And the measure describes a category, so it breaks down where the competitive set is genuinely unclear.

Using it to make decisions

The measure earns its place when it changes something. Three uses are common.

As an early warning: a declining share while sales hold steady is the clearest available signal that the pipeline will thin in two to three quarters, and the cheapest moment to intervene.

As a budget argument: showing that share of search moved in response to brand activity, and that market share followed, converts an act of faith into a chain of evidence a finance director can examine.

As a competitive read: because the data covers rivals as well, it shows whether a decline is company-specific or a category contracting around everyone — two problems with entirely different responses.