What is Share of Search?
Last Updated: Sep 30, 2026
Written by
Pushkar Sinha
Head of SEO Research
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Definition
Share of search measures your brand's portion of total search volume within your category, compared with competitors. It tracks brand demand across search queries and often works as a leading indicator of market share and awareness.
Why It Matters
Share of Search serves as an early warning system for brand performance shifts before they appear in revenue or market share data. Unlike traditional metrics that tell you what happened, Share of Search reveals what's about to happen by tracking mind share through search behavior.
This metric becomes crucial when competitors launch campaigns, industry trends shift, or your content strategy changes. You can spot declining brand interest weeks or months before it impacts sales, giving you time to adjust your approach.
Key Insights
- Search behavior predicts purchasing decisions, making Share of Search a forward-looking brand health indicator.
- Category-level tracking reveals opportunities to capture searches from broader industry terms, not just branded queries.
- Seasonal fluctuations in Share of Search often mirror upcoming revenue patterns, helping forecast business performance.
How It Works
Share of Search calculates your brand's search volume as a percentage of total relevant search volume in your space. You define your competitive set and relevant keywords, then measure your brand's search volume against the combined volume of all tracked terms.
The calculation involves three steps: identify your competitive keyword universe, collect search volume data for each brand and category term, then divide your brand's volume by the total. Most teams track both direct brand comparisons and category-level share.
You can segment by geographic regions, time periods, or specific product categories. The metric works best when you track it consistently over time rather than as point-in-time snapshots. Weekly or monthly tracking reveals trends that daily fluctuations might obscure.
Common Misconceptions
Myth: Share of Search only measures branded keyword performance.
Reality: It includes category terms, competitor comparisons, and broader industry searches relevant to your market position.
Myth: Higher search volume always means better Share of Search results.
Reality: Share of Search focuses on relative performance within your category, not absolute volume numbers.
Myth: Share of Search directly correlates with immediate sales performance.
Reality: It's a leading indicator that predicts future market share changes, not current revenue.
Frequently Asked Questions
How often should I track Share of Search?+
Monthly tracking works best for most B2B brands. Weekly tracking can help during campaign launches or competitive situations, but daily tracking usually creates too much noise to be useful.
What's a good Share of Search percentage?+
It depends entirely on your market position and competitive situation. Focus on trends and relative performance rather than absolute percentages.
Can Share of Search predict actual market share changes?+
Yes, research shows Share of Search often leads market share changes by several months. However, it's a leading indicator, not a guarantee of future performance.
Should I include competitor brand names in my Share of Search calculation?+
Include competitor brands when measuring competitive position, but also track category-level terms to understand broader market dynamics and opportunities.
How do I choose which keywords to include in Share of Search?+
Start with your brand terms and direct competitors, then add category keywords your target audience uses when researching solutions. Focus on terms that represent genuine buying intent.
What is an example of share of search?+
If most of the searches in your category name competitors and only a few name you, your share of search is low. If your brand is searched more often than any rival in the category, your share of search is high.
How do you calculate share of search?+
Calculate share of search by dividing your brand's search volume by the total volume for every brand in your category over the same period, then expressing the result as a percentage. Track it over time to see trends.
Reviewed By
Ameet Mehta
Co-Founder & CEO