Glossary · Metric

What is share of voice?

Share of voice is the proportion of conversation in a defined category that mentions your brand rather than a competitor — usually expressed as a percentage of total mentions across a chosen set of brands, over a chosen period, on a chosen set of sources.

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[01] THE LONGER ANSWER/ METRIC

Why share of voice matters

It is the oldest metric in this category and it survives because it answers a question executives actually ask: are we more talked about than them, and is that changing. Every word in the definition is doing work, though. Change the competitor set, the period or the sources and the number moves — which makes share of voice excellent for spotting a trend in your own data and almost useless as an absolute figure to compare against anybody else’s.
[02] HOW IT WORKS/ IN PRACTICE

The arithmetic is trivial

Your mentions divided by the total mentions of every brand in the set, times a hundred. All the difficulty is in choosing the set.

The competitor set decides the answer

Add a large incumbent and your share collapses; drop them and it doubles. This is why a share-of-voice number is only meaningful against itself over time, with the set held fixed.

Weighted variants exist

Some tools weight each mention by reach or engagement rather than counting them equally, which stops a thousand low-visibility posts outweighing one that everybody read. It is more honest and less comparable.

Sources have to be identical across brands

If your tool covers a platform where a competitor is strong and you are not, their share rises for a reason that has nothing to do with the market. Coverage gaps show up as share-of-voice movements.
[03] WHAT IT IS NOT/ CONFUSED WITH

Share of voice against the terms it gets mixed up with

Most of the confusion in this category is vocabulary rather than substance. These are the terms share of voice is most often used interchangeably with, and the difference that actually matters in each case.

Market share

Market share is money. Share of voice is attention. They correlate loosely and diverge completely during a competitor’s bad news cycle, when their share of voice spikes and their market share does the opposite.

Reach or impressions

Reach counts how many people could have seen something. Share of voice counts how many times a brand was named relative to others. A single mention with enormous reach barely moves an unweighted share-of-voice figure.

Sentiment share

Some teams track share of only the positive conversation, which is a more useful number and a much noisier one. Plain share of voice counts a complaint and a recommendation identically.

[04] WHERE IT MISLEADS/ THE CAVEAT

What a definition will not tell you

Share of voice is the metric most likely to be reported without its assumptions attached, and the assumptions are the whole number. A report saying "our share of voice rose to 34%" means nothing without the competitor set, the sources and the period, and those are exactly what tends to get dropped between the tool and the slide. If you are asked for this number, publish the three inputs beside it or expect to be misquoted.

What FishOut does about it

FishOut has an insights view that shows mention volume by keyword and platform over time, which is the raw material for this. It is not a measurement suite — if a formal share-of-voice figure with reach weighting is the deliverable, a tool like Brand24 is built for that and we are not.

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