Meet The Team

Maize & Blue Fund

Executive Board

Jonathan Sheets — BBA 2014

Jonathan is a senior BBA concentrating in finance. He is from East Lansing, MI and works for Telemus Capital as a part-time Fixed Income Intern during the school year. Last summer he worked at Matrix Capital Management in Boston. In his spare time he likes to snowboard, trade options, and jog with his dog.

Please reach out to him about about joining the fund or any other questions at

David Granik — MBA 2014

David is a second-year MBA at the Ross School of Business. Prior to business school, David worked as a senior analyst at a fundamentally-driven long/short equity hedge fund in New York City covering TMT. Prior to this he was an investment banking analyst at Lehman Brothers. After Ross, David plans to return to the buy-side. In his spare time, David enjoys running, skiing, and playing poker. You can contact him at

Senior Analysts

David Tumm — BBA 2014

David is a senior in the Ross of School of Business concentrating in finance and accounting. He is from Kalamazoo, MI and was an investment banking intern last summer at RBC. The previous summer he interned at an asset management firm in Grand Rapids. David is on the executive board of Michigan Interactive Investments. In his spare time, he likes to play basketball. You can reach him at

Ryan Simes — BBA 2015

Ryan is junior BBA concentrating in finance and accounting with a minor in mathematics. He is from Cincinnati, OH and interned last summer at BP in crude oil trading. In his spare time, Ryan likes to golf, play trumpet, and grill on the porch. He plans to continue to pursue a career in the finance industry. Ryan can be reached at

Faculty and Staff

Tyler Shumway — Chair of Finance, Director Tozzi Finance Center

Tyler’s research examines the structure and function of financial markets and the pricing of financial securities. Some of his recent work concerns bankruptcy prediction and the pricing of corporate bonds, the efficient market hypothesis and the intersection of psychology and finance. Tyler’s research is published in the Journal of Finance, the Review of Financial Studies and the Journal of Business. His research also has been featured in numerous business and popular publications, including the Economist, The New York Times, Time Magazine and The Wall Street Journal.

Kai Petainen — Trading Floor Manager, Adjunct Finance Lecturer

Kai Petainen is the Tozzi Trading Floor manager and an adjunct finance lecturer at the Ross School of Business. He teaches F334, “Applied Quant/Value Portfolio Management”, a class that uses 'action based learning', to evaluate stocks and funds from a quant/value perspective. Petainen is featured in Matthew Schifrin’s book, "The Warren Buffetts Next Door: The World's Greatest Investors You've Never Heard Of and What You Can Learn From Them". He's also a contributing blogger at Forbes. Petainen had articles in Forbes,, Welt Am Sonntag, the San Francisco Chronicle, Santa Cruz Sentinel, MSN Money, Financial Post, the Globe and Mail, and many others. An amateur photographer, he is a fan of ice climbing, Finnish saunas, Ann Arbor, ‘Go Blue’ and the National Parks.

Robert Dittmar — Associate Finance Professor

Robert Dittmar is a Finance Professor at the Stephen M. Ross School of Business at the University of Michigan. His research centers on empirical and theoretical topics in the pricing of fixed income and equity securities. His research has been published in the Journal of Finance, Journal of Financial Economics, Review of Financial Studies, and Journal of Econometrics. His past experience includes a position as Assistant Professor at the Kelley School of Business, Indiana University and work as a financial analyst at First Chicago (now JP Morgan Chase) and First Union (since acquired by Wachovia and Wells Fargo).

Associate Analysts
  • Jeremy Lash
  • Ryan Simes
  • Dejan Rankovic
  • Jonathon Garshofsky
  • Brian Frankel
  • Samantha Hirsh
  • David Behmoaras
  • Matt Hsu
  • David Tao
  • Xuehao Xie
  • Maik Schoettker
  • Noah Hoffman
  • Yixin (Jason) Wu
  • Rishi Jaluria
  • Jessie Crozier
  • Austin Leung
  • Aseem Garyali
  • Markus Goodrich
  • Aloke Chatterjea
  • Sangjun (SJ) Yeo
  • Olga Egorova
  • Rahul Mody
  • Jae Cho
  • Peter Hugick
  • Willie Wan
  • Edward Cheng
  • Robert Fitzpatrick III