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 status | Deal type ◆ | Year ◆ | Notable campaign / context ◆ |
|---|---|---|---|---|---|---|
| Ajay Mitchell | Kalshi | NBA player | Equity holder | Promotional campaign | 2026 | Series E round |
| Alexandra Daddario | Polymarket | Actress | Promotional partner | Promotional campaign | 2026 | “Polymarket HQ” |
| Bob Stoops | Polymarket | Former football coach | Promotional partner | Promotional campaign | 2026 | “Polymarket HQ” |
| Breanna Stewart | Kalshi | WNBA player | Equity holder | Financing Round | 2026 | Series E round |
| Bryson DeChambeau | Kalshi | LIV golfer | Ambassador | Athlete ambassador | 2026 | Kalshi’s first individual athlete partnership |
| Connor McDavid | Kalshi | NHL player | Equity holder | Promotional campaign | 2026 | Series E round |
| Conor McGregor | Polymarket | MMA fighter | Promotional partner | Promotional event | 2026 | UFC 329 promo |
| Craig Robinson | Polymarket | Actor / Comedian | Promotional partner | Promotional campaign | 2026 | “Polymarket HQ” |
| Derek Jeter | Polymarket | Former MLB player | Promotional partner | Promotional campaign | 2026 | “Polymarket HQ” |
| Devin Booker | Kalshi | NBA player | Creative partner | Creative partnership | 2026 | $1 Billion bracket promo |
| Diana Taurasi | Kalshi | Former WNBA player | Equity holder | Promotional campaign | 2026 | Series E round |
| Eli Manning | Polymarket | Former NFL QB | Promotional partner | Promotional campaign | 2026 | “Polymarket HQ” |
| Emily Ratakjowski | Polymarket | Actress | Promotional partner | Promotional campaign | 2026 | “Polymarket HQ” |
| Future | Polymarket | Rapper | Promotional partner | Promotional campaign | 2026 | World Cup commercial |
| Giannis Antetokounmpo | Kalshi | NBA player | Equity holder | Shareholder + marketing partner | 2026 | Shareholder campaign |
| J Balvin | Kalshi | Musician | Creative partner | Creative partnership | 2026 | World Cup commercial |
| Jaime Jaquez Jr. | Kalshi | NBA player | Equity holder | Promotional campaign | 2026 | Series E round |
| John Leguizamo | Polymarket | Actor | Promotional partner | Promotional campaign | 2026 | “Polymarket HQ” |
| LeBron James | Polymarket | NBA player | Promotional partner | Promotional partnership | 2026 | “Polymarket HQ” |
| Lionel Messi | Kalshi | Soccer player | Promotional activation | AFA-linked promotional campaign | 2026 | Argentina / Kalshi World Cup promotion |
| Luka Modrić | Kalshi | Soccer player | Ambassador | Global ambassador | 2026 | World Cup campaign |
| Marshawn Lynch | Kalshi | Former NFL player | Promotional partner | Promotional campaign | 2026 | Commercial appearance |
| Paige Spiranac | Polymarket | Golfer | Promotional partner | Promotional event | 2026 | Polymarket classic |
| Peso Pluma | Polymarket | Singer | Promotional partner | Promotional campaign | 2026 | World Cup commercial |
| Pete Sampras | Kalshi | Former tennis player | Campaign participant | Campaign star | 2026 | “Don’t just accept the odds. Make them.” |
| Rajon Rondo | Polymarket | Former NBA player | Promotional partner | Promotional campaign | 2026 | “Polymarket HQ” |
| Reggie Bush | Polymarket | Former NFL player | Campaign participant | Campaign appearance | 2026 | “Polymarket HQ” |
| Richard Sherman | Polymarket | Former NFL player | Campaign participant | Media partner | 2026 | Richard Sherman Podcast |
| Rick Rubin | Polymarket | Music producer | Promotional partner | Promotional campaign | 2026 | World Cup commercial |
| Ross Smith | OG.com | Comedian | Campaign participant | Campaign star | 2026 | Ring for a KISS campaign |
| Saquon Barkley | Kalshi | NFL player | Equity holder | Financing Round | 2025 | Early financial stake |
| Spike Lee | Polymarket | Filmmaker | Campaign participant | Campaign appearance | 2026 | “Polymarket HQ” |
| Sue Bird | Polymarket | Former WNBA player | Campaign participant | Campaign appearance | 2026 | “Polymarket HQ” |
| Sydney Sweeney | Novig | Actress / Producer | Equity holder | Strategic partner + equity holder | 2026 | “Just Sports” national campaign |
| Timothée Chalamet | Kalshi | Actor | Creative partner | Advertising partnership |
