mr. joe terranova and we'll get crowned the winner. and all next week the traders will unveil their picks and strategies. that starts monday right here on halftime. i'll be watching. 2014 was a great year for the markets but it was troublesome for some high profile ceos. mary thompson joining was a look at some of them. >> on the hot seat and under a microscope. several of them implement strategies aimed at rinne re reinvigorating brands. --. introducing new services to attract new users, all to reverse the stock's decline in 20 2014. a new year and a new menu for mcdonald's. part of the strategy for stirring up sales growth. in a lot of ways he's under the most immediate pressure because any results from the new men good or bad will be quickly evident in the firms monthly figures. yahoo stoke up 128% in two years but not enough for critics who say it has more to do with the stake in alibaba than with ceo marissa mayer's leadership. the question is what does she do with the rest of the money and will she be able to revive the firm's ad