RG Richardson Business & Economics

RG Richardson Business & Economics
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Prediction Market or Wall of Shame?

 

Prediction Market Celebrity Endorsement Tracker

Every major celebrity and athlete deal across Kalshi, Polymarket, Novig, and other prediction markets. 

 Last updated: Sept. 17, 2026
Platform
Celebrity / Athlete ▲Platform ◆Category ◆Deal statusDeal type ◆Year ◆Notable campaign / context ◆
Ajay MitchellKalshiNBA playerEquity holderPromotional campaign2026Series E round
Alexandra DaddarioPolymarketActressPromotional partnerPromotional campaign2026“Polymarket HQ”
Bob StoopsPolymarketFormer football coachPromotional partnerPromotional campaign2026“Polymarket HQ”
Breanna StewartKalshiWNBA playerEquity holderFinancing Round2026Series E round
Bryson DeChambeauKalshiLIV golferAmbassadorAthlete ambassador2026Kalshi's first individual athlete partnership
Connor McDavidKalshiNHL playerEquity holderPromotional campaign2026Series E round
Conor McGregorPolymarketMMA fighterPromotional partnerPromotional event2026UFC 329 promo
Craig RobinsonPolymarketActor / ComedianPromotional partnerPromotional campaign2026“Polymarket HQ”
Derek JeterPolymarketFormer MLB playerPromotional partnerPromotional campaign2026“Polymarket HQ”
Devin BookerKalshiNBA playerCreative partnerCreative partnership2026$1 Billion bracket promo
Diana TaurasiKalshiFormer WNBA playerEquity holderPromotional campaign2026Series E round
Eli ManningPolymarketFormer NFL QBPromotional partnerPromotional campaign2026“Polymarket HQ”
Emily RatakjowskiPolymarketActressPromotional partnerPromotional campaign2026“Polymarket HQ”
FuturePolymarketRapperPromotional partnerPromotional campaign2026World Cup commercial
Giannis AntetokounmpoKalshiNBA playerEquity holderShareholder + marketing partner2026Shareholder campaign
J BalvinKalshiMusicianCreative partnerCreative partnership2026World Cup commercial
Jaime Jaquez Jr.KalshiNBA playerEquity holderPromotional campaign2026Series E round
John LeguizamoPolymarketActorPromotional partnerPromotional campaign2026“Polymarket HQ”
LeBron JamesPolymarketNBA playerPromotional partnerPromotional partnership2026“Polymarket HQ”
Lionel MessiKalshiSoccer playerPromotional activationAFA-linked promotional campaign2026Argentina / Kalshi World Cup promotion
Luka ModrićKalshiSoccer playerAmbassadorGlobal ambassador2026World Cup campaign
Marshawn LynchKalshiFormer NFL playerPromotional partnerPromotional campaign2026Commercial appearance
Paige SpiranacPolymarketGolferPromotional partnerPromotional event2026Polymarket classic
Peso PlumaPolymarketSingerPromotional partnerPromotional campaign2026World Cup commercial
Pete SamprasKalshiFormer tennis playerCampaign participantCampaign star2026“Don't just accept the odds. Make them.”
Rajon RondoPolymarketFormer NBA playerPromotional partnerPromotional campaign2026“Polymarket HQ”
Reggie BushPolymarketFormer NFL playerCampaign participantCampaign appearance2026“Polymarket HQ”
Richard ShermanPolymarketFormer NFL playerCampaign participantMedia partner2026Richard Sherman Podcast
Rick RubinPolymarketMusic producerPromotional partnerPromotional campaign2026World Cup commercial
Ross SmithOG.comComedianCampaign participantCampaign star2026Ring for a KISS campaign
Saquon BarkleyKalshiNFL playerEquity holderFinancing Round2025Early financial stake
Spike LeePolymarketFilmmakerCampaign participantCampaign appearance2026“Polymarket HQ”
Sue BirdPolymarketFormer WNBA playerCampaign participantCampaign appearance2026“Polymarket HQ”
Sydney SweeneyNovigActress / ProducerEquity holderStrategic partner + equity holder2026“Just Sports” national campaign
Timothée ChalametKalshiActorCreative partnerAdvertising partnership
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I am a business economist with interests in international trade worldwide through politics, money and banking. Interactive Internet VoIP and secure eMail Communications. The author of RG Richardson City Guides that has over 300 guides, including restaurants, real estate and finance.