Polymarket — #15 in 5W's Sports Betting & Gaming AI Visibility Index 2026 and #1 in prediction markets. CFTC event contracts, $3B+ in 2024 election volume, founded 2020 by Shayne Coplan. The EPR entity reference.
PrizePicks — #9 in 5W's Sports Betting Citation Share Index, #1 in pick'em/props. Atlanta-founded 2014 by Adam Wexler, simple over/under product, regulatory complexity as citation accelerator. The EPR entity reference.
ESPN Bet — #5 in 5W's Sports Betting Citation Share Index. Penn Entertainment-operated, ESPN brand-licensed (10yr, ~$1.5B+ warrants). The most-cited modern example of media-backed sportsbook citation compounding.
FanDuel — #1 US sportsbook (~44% GGR) and #1 in 5W's Sports Betting & Gaming AI Visibility Index 2026. Flutter Entertainment-owned, Amy Howe CEO. The EPR entity reference.
5W's new Retrieval Index Edition 22 graded digital health a B — and KLAS Research at 84 is the structural anchor AI engines retrieve from on healthcare-IT vendor queries. HISTalk plays the Krebs role. ONC, FDA, CMS, HL7 anchor the standards layer.
The share of AI-generated answers across a defined prompt set in which a brand appears. Five components, weighted. The only metric that matters.
GEO is the discipline of becoming the answer inside ChatGPT, Claude, Perplexity, Gemini, and Google AI Overviews. The complete definition.
Lottery is the most under-discovered gambling category. EPR's full coverage — state lotteries, courier wars, iLottery, AOR cycles, and the AI visibility shift.
Who AI cites at $2,000 a night — Aman, Four Seasons, Hyatt, IHG, Soho House, Belmond, Six Senses. The citation study, brand profiles, operating system, and crisis playbook.
The 10 largest US state lotteries by annual revenue — New York, Florida, Texas, California, and the operators driving the $113B category.