James Bullard, St. Louis Fed President, says OPEC's decision to cut output came as a "surprise," but it's not clear what higher oil prices will mean for US monetary policy. John Ryding, Brean Capital Chief Economic Advisor, says the response to the bank turmoil has been swift and strong. Lori Calvasina, RBC Capital Markets Head of US Equity Strategy, still expects 4,100 on the S&P 500 by year-end. Ed Morse, Citi Research Global Head of Commodities, sees a "scenario" for $100 oil but says we're not "anywhere near there yet."