McKinsey & Company is a worldwide management consulting firm. It conducts qualitative and quantitative analysis in order to evaluate management decisions across the public and private sectors. Widely considered the most prestigious management consultancy, McKinsey's clientele includes 80% of the world's largest corporations, and an extensive list of governments and non-profit organizations. More current and former Fortune 500 C.E.O.'s are alumni of McKinsey than of any other company. McKinsey publishes the McKinsey Quarterly, funds the McKinsey Global Institute research organization, publishes reports on management topics, and has authored many influential books on management.