Tom Idzorek Show NotesOur guest this week is Tom Idzorek. Tom is chief investment officer, retirement, for Morningstar Investment Management, which is Morningstar's affiliated asset-management arm. Previously, Tom was president of Morningstar Investment Management and before that was a leading researcher at Ibbotson Associates. Tom has collaborated on a number of influential academic studies on topics including asset allocation, the liquidity of stocks, and the role of popularity and security prices. Tom serves on the editorial board of the CFA Institute's Financial Analysts Journal. He received his bachelor's degree from Arizona State University and his MBA from Thunderbird School of Global Management. He is also a CFA charterholder.BackgroundBioAsset Allocation and Managed AccountsRoger IbbotsonPeng ChenBarton WaringLarry SiegelActive Portfolio Management: A Quantitative Approach for Producing Superior Returns and Controlling Risk, by Richard Grinold and Ronald Kahn“Stop Guessing: Using Participant Data to Select the Optimal QDIA,” by Thomas Idzorek, David Blanchett, and Daniel Bruns, Morningstar.com, Jan. 30, 2018.ByAllAccountsModern Portfolio TheoryAcademic Research“Liquidity Style of Mutual Funds,” by Thomas Idzorek, James Xiong, and Roger Ibbotson, papers.ssrn.com, Feb. 10, 2012.“The Popularity Asset Pricing Model,” by Thomas Idzorek, Paul Kaplan, and Roger Ibbotson, papers.ssrn.com, Oct. 25, 2021.“Forming ESG-Oriented Portfolios: A Popularity Approach,” by Thomas Idzorek and Paul Kaplan, papers.ssrn.com, May 20, 2022.“Popularity: A Bridge Between Classical and Behavioral Finance,” by Roger Ibbotson, Thomas Idzorek, Paul Kaplan, and James Xiong, papers.ssrn.com, Dec. 10, 2018.