Photo of O’Brien, William

William O'Brien

Assistant Professor

Department of Finance

Pronouns: Hi/Him/His


Building & Room:

University Hall 2124


601 S. Morgan St., Chicago, IL 60607

Office Phone:

(312) 996-4552

CV Download:




  • University of Illinois at Chicago, College of Business Administration, 2015 - Present

Classes Taught

  • Introduction to Managerial Finance

Selected Publications

“Business Groups and Employment” (with Mara Faccio), Management Science, forthcoming.

“U.S. Worldwide Taxation and Domestic Mergers and Acquisitions” (with Jeremiah Harris), 2018, Journal of Accounting and Economics 66, 419-438.

  • One of six papers selected for the 2017 Journal of Accounting and Economics Conference (Wharton Business School, Philadelphia, PA).

“Option Repricing, Corporate Governance, and the Effect of Shareholder Empowerment” (with Huseyin Gulen), 2017, Journal of Financial Economics 125, 389-415.

“Captive Finance and Firm’s Competitiveness” (with Andriy Bodnaruk and Andrei Simonov), 2016, Journal of Corporate Finance 27, 210-228.

Notable Honors

2018, Excellence in Teaching Award, UIC Business

2018, Silver Circle Award for Excellence in Teaching, UIC


PhD, Finance, Purdue University (2015)
MS, Economics, Purdue University (2013)
MBA, University of Notre Dame (2010)
BS, Finance, University of Illinois (2000)

Research Currently in Progress

  • "Do the Most Prominent Firms Really Make the Worst Deals?" (with Josh Austin and Jeremiah Harris)
    Revise and Resubmit, 2nd round, Journal of Banking and Finance.
  • "Do U.S. Firms Disguise Acquisitions to Avoid Taxes?" (with Jeremiah Harris)
  • "Comparing the Tax Strategies of U.S. Multinationals" (with Jeremiah Harris)
  • "Detecting Earnings Information in Repurchase Announcements Using the Luck of the (Double) Irish"