Published on CoinnounceFour-time gold medalist, Olympic star and one of the most famous tennis player, Serena Williams recently posted on Instagram about the launch of her own venture firm called Serena Ventures. She also revealed that the firm has invested in more than thirty companies that include the Coinbase. View this post on Instagram […]The post Serena Williams: Olympic star invests in Coinbase appeared first on Coinnounce.