David is a tenured and chaired professor at The Wharton School where he is also an award-winning teacher and researcher. He started Wharton's first ever course on Digital Marketing and E-Commerce and is also author of Location Is is (Still) Everything: The Surprising Influence of the Real World on How We Search, Shop, and Sell in the Virtual One, a playbook for how to win in the digital economy. David’s book was published in Portuguese in 2016 for Brazil and in Mandarin in 2017 for the Chinese market. David speaks frequently and globally on digital marketing, retailing, and the future of commerce for clients including Alibaba, Google, Haier, Nike, and Ralph Lauren. David is an early investor in leading brands including Bonobos (acquired by Walmart for $310m), Diapers.com (acquired by Amazon for $545m), Harry’s, Jet.com (acquired by Walmart for $3.3b), and Warby Parker, among others. David is also President of Idea Farm Ventures, a new New York City based venture studio that founds and invests in consumer lifestyle brands. He is a New Zealand citizen and holds a Ph.D. (Graduate School of Business) and an M.S. (Statistics), from Stanford University.