NEW YORK (TheStreet) -- The S&P 500 rallied 0.75% ahead of theaFederal Reserve's meeting and Chair Janet Yellen's press conferenceaWednesday.a On CNBC's "Fast Money" TV show, Brian Kelly, founder of Brian Kelly Capital, said the Federal Reserve's monetary policy is what's driving the stock market. He does not think the market is ready to embrace higher interest rates.a Dan Nathan, co-founder and editor of riskreversal.com, said the current market does not feature robust jobs growth or revenue growth.