HARLOW: And finally tonight, the number. It is 21. As we kick off the New Year Fortune magazine reports there will only be 21 female CEOs running Fortune 500 companies in the New Year. That is down from 2014 when there were 24 female CEOs in the Fortune 500. But when you look at the S&P 500, Fortune notes just one new female CEO is added every two years. Also, they have a shorter tenure overall, holding the top spot in their corporations an average of just four years, two years less than their male CEO counterparts. Something to think about as we head in to the New Year, 500 top companies in the United States and just 21 female CEOs. Up next here in CNN, a Sixties marathon at 7:00 p.m., television comes of age. Then at 8:00 sex, drugs and rock and roll. At 9:00, the British invasion. The Sixties marathon is next. I'm Poppy Harlow in New York. I will see you back here tomorrow night.
Fortune Magazine: Only 21 female CEOs Running Fortune 500 Companies in the New Year.