William (Weijian) Liang, PhD, is a Principal and Director of Multi-Asset Research for PGIM Quantitative Solutions’ Multi-Asset team. He oversees research for existing and new products and capabilities on our multi-asset platform. Prior to joining PGIM Quantitative Solutions, Weijian was a Senior Quantitative Researcher and Manager at Vanguard Group for the development and analysis of quantitative investment strategies across asset classes. Previously, he worked as an Alpha Strategies Researcher at Credit Suisse Securities, and as a Quant Modeler at Moody’s Investors Service. Weijian’s articles have appeared in Mathematics and Financial Economics, and the International Review of Economics & Finance. He earned a BA in finance from Zhongshan University in China, an MS in statistics from the University of Iowa and a PhD in statistics from New York University.