exxon is facing an activist investigators from one of the biggest pension funds in this country, calstrs and domino's ceo relationship allison has the latest for delivery competition. >>> and former fda commissioner dr. jane henny will give her take on the timeline for vaccine districts and what it means for the u.s. recovery. first let's focus on the big stories of the day mike santoli is tracking the market action as always. meg tirrell has the latest on a big week for vaccine news. the other big theme for us a couple of high-profile ipos. leslie picker has the latest for us on airbnb mike over to you. >> market starting the week a little bit heavy footed after about a five-week upward sprint that took the s&p up 1%. look at the year to date, really extending this rally you might look at this and say incredibly modest pullback supported by some of the big growth stocks getting a bid. what would it mean to have just what would be called a routine pullback what has been the pattern? the pattern has been when we have gotten a pullback it has gone back to the prior ceiling that becomes the