The Hall of Fame shortstop and the founder of LegalZoom built a company around a simple frustration: card collecting is a great hobby wrapped in a bad logistics problem. Arena Club grades, vaults, and trades the cards so collectors do not have to.
Rare Candy is a New York- and Dallas-based online marketplace built for trading card game collectors. It brings the social energy of the neighborhood hobby shop online, letting people buy, sell, auction, and track sealed booster boxes, vintage packs, and graded cards across Pokemon, Magic: The Gathering, Yu-Gi-Oh!, One Piece, Gundam, and Lorcana. Co-founded by product veteran Chris Knape and YouTuber Lee Steinfeld (Leonhart), the platform pairs verified inventory and Thursday live auctions with an AI-powered card scanner that identifies cards in English and Japanese and surfaces real-time pricing.
CollX is a Philadelphia-area startup whose mobile app lets collectors snap a photo of a sports or trading card and instantly identify it and see its current market value. Built around AI visual search trained on a database of more than 17 million cards, CollX has grown from a quick valuation tool into a full collection-management platform and peer-to-peer marketplace where over 3 million users scan, organize, price, buy, sell, and trade cards. The company monetizes through Pro and Gold subscriptions, marketplace commissions, and referral revenue from hobby partners like PSA, Whatnot, and Fanatics.