Stephen Walker

About Me

Hello! I'm Stephen, and this is my personal landing page. Feel free to explore and connect with me through the links below.

Research Contributions to the Financial Times

Investigative research into Ben Borgers, the auditor of Trump Media. Quite a story! Read the article (PDF).

Investigating questionable IPOs and the networks connecting auditors and underwriters. Read the article (PDF).

Follow-up reporting on problematic IPOs and the SEC's decision to launch a task force. Read the article (PDF).

Academic Publications

Walker, S. (2021). Machine Learning and Corporate Fraud Detection. University of California, Berkeley. [View Dissertation]

My dissertation dives deep into corporate fraud models and explains why finding the needle in the haystack is likely to stay there.

PEPFAR Spending Types and Reduction in HIV Infection Rates | medRxiv (Working Paper, 2022)

In this paper, I measure and document marginal effects of various spending types of the PEPFAR program (e.g., treatment, prevention, etc.) on new HIV infections.

I have four publications with Econ Journal Watch. In this series:

  • I identify problems with using Benford’s Law in corporate fraud detection.
  • I call for an investigation into academic misconduct relating to a “fraud detection paper” published in a top academic journal following identification of problematic coding “errors.”

Education

Community Service