David Hohman is executive vice president and managing director of Nielsen Media Demand Side, responsible for all agency and advertisers relationships as well as its Global Performance Measurement Practice. A Six Sigma Black Belt, Hohman has specific expertise deploying advanced analytics solutions that optimize the effectiveness and profitability of multichannel marketing initiatives. Prior to joining Nielsen, he led multiple client engagements across the IPG network of agencies. His client experience spans the retail, automotive, government, technology, telecommunications, healthcare and financial services verticals.