Zachary Karabell is an American author, historian, money manager and economist. Karabell is President of River Twice Research, where he analyzes economic and political trends. He is also a Senior Advisor for Business for Social Responsibility. Previously, he was Executive Vice President, Head of Marketing and Chief Economist at Fred Alger Management, a New York-based investment firm, and President of Fred Alger and Company, as well as Portfolio Manager of the China-US Growth Fund, which won both a Lipper Award for top performance and a 5-star designation from Morningstar, Inc.. He was also Executive Vice President of Alger's Spectra Funds, a no-load family of mutual funds that launched the $30 million Spectra Green Fund, which was based on the idea that profit and sustainability are linked. At Alger, he oversaw the creation, launch and marketing of several funds, led corporate strategy for acquisitions, and represented the firm at public forums and in the media. Educated at Columbia, Oxford, and Harvard, where he received his Ph.