The inaugural Payments Processors Citation Share Index 2026 — which payment processors ChatGPT, Claude, Gemini, Perplexity, and Google AI Overviews actually cite. Stripe owns developer. PayPal owns consumer. Square owns SMB. Adyen owns enterprise.
The inaugural Neobanks Citation Share Index 2026 — which neobanks ChatGPT, Claude, Gemini, Perplexity, and Google AI Overviews actually cite. Chime owns retail. Revolut owns global. SoFi owns financial-life. Cash App owns P2P. Locked 5W methodology.
The inaugural Stablecoin Citation Share Index 2026 — which stablecoins ChatGPT, Claude, Gemini, Perplexity, and Google AI Overviews actually cite. USDC owns regulated. USDT owns scale. PYUSD owns retail. Locked 5W Citation Index methodology, 750 observations.
Which subreddits ChatGPT, Claude, Gemini, Perplexity, and Google AI Overviews actually cite across crypto, finance, wellness, and B2B. 4,000 observations. Perplexity leans hardest on Reddit. Claude lightest.
A GEO program without measurement is content marketing with optimism. The five-component scoring formula behind Citation Share — Citation Frequency, Cross-Engine Breadth, Query-Type Breadth, Extractability, Crawl Access.
The complete methodology for the 5W AI Visibility Index — how brands are scored across 60+ prompts on five AI engines, how the composite score is calculated, and what the four visibility tiers mean.
The SEC Marketing Rule (Rule 206(4)-1) replaced an eighty-year ban on testimonials, allowing Registered Investment Advisers (RIAs) to use them in marketing under specific conditions. Despite this, most RIAs have not yet adopted testimonial and endorsement programs. This article argues that embracing the Marketing Rule is crucial for AI visibility, as AI engines heavily weight third-party validation. It outlines a playbook for compliant deployment across various channels and highlights firms successfully leveraging the rule.
The structural shift is complete. What actually changed, what it means for every brand and communications team, and what the next 18 months look like.
Citation Share is the share of AI-generated answers in which a brand appears. The KPI behind GEO, how it is measured, what it captures, what it does not, and how to set up a Citation Share program.
Novo Nordisk owns the diabetes GLP-1 answer. Eli Lilly owns the weight-loss answer. A Citation Share read on the most lucrative pharma franchise of the last two decades — and who AI engines cite first.
