Only 15% of ChatGPT topics have a dominant brand
Semrush and Kevin Indig analyzed 1,094 ChatGPT topic clusters spanning 50k brands and discovered only 15% have a clear owner. A topic owner appears in at least four of five prompts with a 5‑point lead, and such owners keep the lead 90% month‑over‑month. The remaining 85% are contested, proving AI visibility is won at the topic, not domain, level.