Steph Curry signs a deal to represent FTX Trading Limited as an ambassador. Curry will gain a stake in the company as part of the arrangement, and FTX will make annual payments to Curry and his wife's Eat.Learn.Play foundation. The exchange's focus on sponsorships and eye-popping promotions has helped it climb the rankings this year. In May, the two sides agreed to a $135 million, 19-year naming rights deal for the Miami Heat arena.