Ran Zhang Headshot

Research Topic

Interfirm Links, Return Predictability and Quantitative Strategies

Research Summary

A body of evidence has accumulated documenting interfirm return predictability. Scholars find the economically linked firms exist return predictability. Cohen and Frazzini (2008) introduce customers to supplier return predictability. Cohen and Lou (2012) find standalone firm's have a conglomerate return predictability due to complicated information processing. 

However, the financial link, as the other essential firm relationship, is rarely paid attention to by scholars. I study parents which have complex ownership structures. I propose a novel channel: the ownership links lead to return predictability via slower information incorporation. 

Selected Conferences

  • American Finance Association (AFA) 2019 Annual Meeting, 4–6 Jan 2019, Atlanta, Georgia, USA (presenter)
  • Financial Management Association (FMA) 2018 Doctoral Student Consortium, 10–13 Oct 2018, Hilton San Diego Bayfront, San Diego, CA, USA (presenter)
  • 27th Annual Conference of European Financial Management Association (EFMA), 27–30 June 2018, Università Cattolica del Sacro Cuore, Milan, Italy
  • 25th Annual Conference of the Multinational Finance Society (MFS), 24–27 June 2018, Novotel Budapest City, Budapest, Hungary (presenter and discussant)
  • British Accounting and Finance Association (BAFA) Annual Conference with Doctoral Masterclasses, 9–11 April 2018, London, UK (presenter)
  • 12th LSE SU Alternative Investments Conference, Jan 2018, London, UK
  • Scottish Doctoral Colloquium in Accounting and Finance (Edinburgh 2017, Glasgow 2018)(presenter)

Research Area

Research Taxonomy


  • Currently a Doctoral candidate in PhD in Finance, undertaking a PhD in Operational Research and Optimization
  • MSc (Distinction) in Financial Modelling and Optimization


  • R. Zhang, A. Grothey, K. McKinnon. 'Piecewise Linear AC Power Flow with Transmission Switching' (submitted)

Teaching Assistant

  • Computing for Operational Research and Finance (MSc
  • Optimization Methods in Finance (MSc)
  • Fundamentals of Operational Research (MSc)
  • Probability (UG2)
  • Mathematics for Natural Science (UG1)
  • Engineering Mathematics (UG1)