Share of SERP

What the Share of SERP is good for

• Competitor comparison on equal terms — who dominates a topic area?
• Trend observation — is your own share growing, or are competitors eating visibility away?
• Success reporting — share growth is easier to understand than ”position 4 instead of 6".
• Topic cluster diagnosis — per topic cluster (rather than per keyword alone), it becomes clear where the domain is strong or weak.

Classic Share of SERP findings

Three typical patterns: (1) Dominant market leaders often hold a 30–50 % share in their core topic — hard to attack head-on, but avoidable via long tail clusters. (2) Fragmented markets with 5–10 competitors at 5–15 % share each — here, jumps are possible more quickly. (3) Topic cluster specialists with a 0 % share in the broad market but a 25 % share in a sub-niche — the genuine winning strategies.

Share of SERP in the Rankmio position tracker

In the position tracker, per project: for each topic cluster the Share of SERP is calculated across the cluster keyword set, separately for your own domain and for every pinned competitor. A trend chart covering the last 12 weeks shows who is growing and who is shrinking. Where visible jumps occur, a diagnosis is suggested automatically (for example ”competitor X has made a 5-point jump in cluster B — presumably a new pillar page has been published").