Your competitor shows up in the AI answer and you don't, even though you outsell them. Why Citation Share — the AI-era version of market share — rewards a different input stack than revenue, with the diagnostic framework and how to flip it.
AI engines now decide which sportsbooks get named when buyers ask. Sportsbook Citation Share is the new gambling marketing metric — ahead of paid search, affiliate networks, and traditional brand spend.
Twenty-five prompts. Five engines. One hundred twenty-five outputs. Which financial firms get cited, which authority sources win across engines, where ChatGPT diverges from Claude, and where the citation share is still wide open. The data anchor for the Financial Services pillar.
Type your name into ChatGPT. Whatever comes back — that is your reputation now. Not your website. Not your press page. Not even Google. The answer itself. Why the reputation surface moved inside the chatbox, and what the new discipline looks like.
A buyer asks ChatGPT, "Best [category] vendors," and your brand isn't in the answer. Or worse, it's named once, in a footnote, after three competitors you've outsold for a decade. There are typically four reasons. Most brands assume the wrong one.
AI engines now synthesize B2B marketing answers before buyers click a single link. Here's who controls those answers — and how Citation Share is measured and won.
Paywalls now block AI engines. That single structural fact is changing the hierarchy of news authority inside ChatGPT, Claude, Perplexity, Gemini, and Google AI Overviews. The NY Post is structurally better positioned inside ChatGPT than the NY Times — and this is the new game.
Chegg is the first publicly traded company to attribute revenue decline to AI — stock down ~99% from its 2021 peak, more than half the workforce cut in 2025, and a lawsuit against Google. The Vulnerable 50 case study at #96.
Most brands have never measured their Citation Share — the percentage of relevant AI answers where they appear. The 2026 five-step audit framework for ChatGPT, Claude, Perplexity, Gemini, Google AI Overviews, and Microsoft Copilot. Two to four hours, in-house executable.
A directional modeling study of how five AI engines surface and rank 50 American universities across 62 student-intent prompts — with the modeled Citation Share leaderboard, gap table, source layer audit, and the GEO playbook for university CMOs.