S&P 500 stock up 234% this year gets a shocking downgrade [https://www.thestreet.com/.image/t_share/MjE4MDk3MjgwMTg2NTkxMDY4/gettyimages-1246654944.jpg] S&P 500 stock up 234% this year gets a shocking downgrade Robinhood hits record $132.67 as analysts warn of stretched valuation risks. [https://www.thestreet.com/crypto/investing/s-p-500-stock-up-234-this-year-gets-a-shocking-downgrade]