Latest Research Publications
In the Media
We re-examine the puzzling pattern of lead-lag returns among economically-linked firms. Our results show that investors consistently underreact to information from lead firms that arrives continuously, while information with the same cumulative returns arriving in discrete amounts is quickly absorbed into price. This finding holds across many different types of economic linkages, including shared-analyst-coverage. We conclude that the ǣfrog in the panǥ (FIP) momentum effect is pervasive in co-momentum settings, suggesting that information discreteness (ID) serves as a cognitive trigger that reduces investor inattention and improves inter-firm news transmission.
Journal of Financial Economics
A large literature in neuroscience and social psychology shows that humans are wired to be meticulous about how they are perceived by others. In this paper, we propose that impression management considerations can also end up guiding the content that investors transmit via word of mouth and inadvertently lead to the propagation of noise. We analyze server log data from one of the largest investment-related websites in the United States. Consistent with our proposition, we find that investors more frequently share articles that are more suitable for impression management despite such articles less accurately predicting returns. Additional analyses suggest that high levels of sharing can lead to overpricing.
Journal of Financial Economics
We examine how investor demand for leverage shapes asset management fees. We show that in the sample of U.S. equity mutual funds: (1) fees increase in fund market beta precisely for beta larger than one; (2) this relation becomes stronger and high-beta funds experience larger inflows when leverage constraints tighten; and (3) low net alphas are especially common among high-beta funds. These results are consistent with a model in which asset managers compete for leverage-constrained investors with heterogeneous risk aversion. The asymmetric relation between betas and fees also extends to the HML and SMB factors.
Journal of Financial Economics
To combat stress and burnout, employers are increasingly offering benefits like virtual mental health support, spontaneous days or even weeks off, meeting-free days, and flexible work scheduling. Despite these efforts and the increasing number of employees buying into the importance of wellness, the effort is lost if you don’t actually recover. So, if you feel like you’re burning out, what works when it comes to recovering from stress? The authors discuss the “recovery paradox” — that when our bodies and minds need to recover and reset the most, we’re the least likely and able to do something about it — and present five research-backed strategies for recovering from stress at work.
05 Jul 2022
Management and Strategy
Jian Zhang from the HKU Business School along with authors from the Shanghai Advanced Institute of Finance at Shanghai Jiao Tong University, INSEAD in Singapore and the PBC School of Finance at Tsinghua University, helped to advance understanding of this phenomenon in their recent paper, called Air Pollution, Behavioral Bias, and the Disposition Effect in China. The team studied how air pollution can affect mental health by intensifying a certain type of cognitive bias observed in financial markets.
19 May 2022
Take the recent study by Chen Lin and Mingzhu Tai from the HKU Business School, conducted with collaborators from the University of California, Berkeley and the Chinese University of Hong Kong. Their paper addressed a fundamental worry for almost everyone during the pandemic: Money. Specifically, they examined how people in the U.S. saved money in response to COVID-19.
14 April 2022
While computer languages may sound alien to economics, I aim to showcase that good programming skills are conducive not limited to economic research, it can also open up endless career possibilities for you in the business world.
31 Jan 2022
As a teacher, I will push myself to understand the expectations of local employers' and the market dynamics of Hong Kong.
18 Jan 2022
As a science person, I am impressed by our students' strong business acumen. But as a teacher, other than teaching them how to use quantitative tools to make scientific claims, I also hope that I can encourage them to continue to stay inquisitive about the world and apply their classroom knowledge for the betterment of the society.
5 Jan 2022
Professor Yulin Fang is a seasoned scholar, professional case writer, veteran IT consultant, and editor for several internationally renowned journals. Seeing HKU Business School as a supernova in the academic landscape, Professor Fang is keen to contribute his intellectual might on digital innovation and transformation to our School’s journey of excellence. Joining us in September 2021, Professor Fang will be leading our School’s newly formed research centre, the Institute of Digital Economy and Innovation (IDEI).
30 Mar 2022
Aspired to make a difference than making a fortune, Dr. Zhepeng Li is dedicated to propel the development of information systems and machine learning technologies.
16 Mar 2022
14 Sep 2022
HKU Business School publishes the “Hong Kong Economic Policy Green Paper 2022”, joining hands to offer recommendations on Hong Kong’s economic development
HKU Business School today announced the “Hong Kong Economic Policy Green Paper 2022” (Green Paper 2022). The Green Paper aims to analyse the key areas of Hong Kong's economic policy and find new insights into enhancing Hong Kong’s economic development.
23 Sep 2022
Chen Zhiwu, a professor of finance at the University of Hong Kong, says Chinese leaders understand military conflicts may be “hard to avoid” if Beijing wants to unify Taiwan with the mainland. “The comprehensive economic sanctions against Russia after its invasion of Ukraine have only added urgency to [China] achieving self-sufficiency in technology, finance, food and energy,” Chen adds. “Self-sufficiency as a phrase has regained currency in the party’s publications.”
15 Sep 2022