What Is Share of Voice (SOV)?

What Is Share of Voice (SOV)?

Being loud is easy. Being louder than your competitors, in the conversations that matter, is a measurable advantage , and one that correlates with actually winning market share. Share of voice puts a number on that relative presence, turning "we feel visible" into something you can track, compare and improve.

The short version

Share of voice (SOV) measures the proportion of total conversation, mentions or advertising in your market that belongs to your brand, relative to competitors. Originally an advertising metric (your ad spend as a share of the category's), it now widely applies to social mentions, search visibility and overall category presence.

How to calculate it

The formula is simple: your brand's metric divided by the total for you plus your tracked competitors, times 100. That metric might be social mentions, branded search volume, ad spend, or SERP visibility , the principle is the same. If you have 300 mentions and the whole tracked set has 1,200, your share of voice is 25%. The discipline is defining the competitive set honestly.

Why it matters

• It's relative , it measures presence against competitors, not in a vacuum

• It links to growth: brands whose SOV exceeds their market share tend to gain share

• It works across channels: social, search, PR and advertising

• It reframes visibility as a competition you can track and win

The growth connection

A well-established marketing principle holds that when a brand's share of voice exceeds its share of market, it tends to grow , the gap acts as a kind of momentum. Falling behind on SOV, conversely, is an early warning that competitors are out-shouting you where it counts. It turns 'are we visible enough?' into a strategic, comparative question.

Measuring it well

Define a realistic competitive set, pick the channels that matter for your category, and track SOV over time rather than as a one-off snapshot. Trends beat single readings. Our social media team tracks share of voice as a core KPI so brands can see whether they're gaining or losing ground against rivals.

FAQ

What's a good share of voice?

There's no universal target , it's relative to your competitive set and market position. The more useful question is whether your SOV exceeds your market share (a growth signal) and whether it's trending up or down over time.

Which channels should I measure SOV on?

The ones where your buyers pay attention and your category competes , often social mentions, branded search and SERP visibility for digital brands. Measure where the conversation that influences decisions actually happens.

How is SOV different from reach?

Reach is absolute , how many people you reached. Share of voice is relative , your slice versus competitors. You can grow reach while losing share of voice if rivals grow faster. SOV keeps the comparison honest.

Sources

• Sprout Social , Share of Voice: https://sproutsocial.com/insights/share-of-voice/

• Les Binet & Peter Field / IPA: https://ipa.co.uk/knowledge/publications-reports/

• Brandwatch Resources: https://www.brandwatch.com/blog/