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Ethnic Diversity and Corporate Interstate Investments
Ethnic Diversity and Corporate Interstate Investments
We document that firms prefer counties with higher ethnic diversity in locating their interstate investments, especially for those pursuing innovation, seeking to establish service centers, or capable of managing a diverse workforce. We also find some evidence that interstate investment in high ethnic diversity locations results in increased patent applications, sales growth, positive media coverage, and overall operating performance. Taken together, we show that firms prefer to invest in ethnically diverse locations as they recognize the potential benefits of leveraging a diverse labor supply such as enhancing problem-solving, innovation, and performance.

Getting to the Core: Inflation Risks Within and Across Asset Classes
Getting to the Core: Inflation Risks Within and Across Asset Classes
Do real assets protect against inflation? Stocks’ core inflation betas are negative, while their energy betas are positive. Currencies, commodities, and real estate mostly hedge against energy inflation, but not core inflation. These hedging properties are reflected in the prices of inflation risks: only core inflation carries a negative risk premium, and its magnitude is consistent within and across asset classes, uniquely among macroeconomic risk factors. Energy inflation has become more procyclical and volatile since the 1990s, which helps explain the time-varying correlation between stock and bond returns. A two-sector New Keynesian asset pricing model accounts for these facts quantitatively.

Testing for Jumps in a Discretely Observed Price Process with Endogenous Sampling Times
Testing for Jumps in a Discretely Observed Price Process with Endogenous Sampling Times
This paper introduces a novel nonparametric high-frequency jump test for discretely observed Itô semimartingales. Based on observations sampled recursively at first exit times from a symmetric double barrier, our method distinguishes between threshold exceedances caused by the Brownian component and jumps, which enables the construction of a feasible, noise-robust statistical test. Simulation results demonstrate superior finite-sample performance of our test compared to existing methods. An empirical analysis of NYSE-traded stocks provides clear statistical evidence for jumps, with the results highly robust to spurious detections.

Carbon-Transition Risk and Net-Zero Portfolios
Carbon-Transition Risk and Net-Zero Portfolios
Key Takeaways Net-zero portfolios (NZPs), managing over $130 trillion USD in assets, align financial performance with climate goals. These portfolios reward firms that actively reduce emissions while excluding those lagging behind, driving market incentives for decarbonization. The study introduces distance to exit (DTE), a forward-looking metric that measures a firm’s risk of exclusion from NZPs based on its carbon footprint and decarbonization efforts. Firms with higher DTEs—seen as safer from exclusion—tend to have higher valuations but lower expected returns, highlighting the market’s pricing of carbon-transition risks. DTE serves as both a risk measure and a catalyst for action, incentivizing firms to accelerate decarbonization to remain in NZPs, while enabling portfolios to achieve up to 95% reductions in carbon intensity without sacrificing sector diversification. Source Publication: 
Trade, Trees, and Lives
Trade, Trees, and Lives
Key Takeaways The agricultural export value of Brazil has quadrupled over the last two decades due to rising global demand. Brazil’s agricultural export boom drives deforestation: between 1997 and 2019, trade-induced agricultural expansion led to the loss of 3.6 million hectares of forest. Trade-induced deforestation causes severe health consequences: it results in over 700,000 premature deaths, primarily from cardio-respiratory diseases linked to pollution from deforestation in upwind areas. The economic cost of these deaths is estimated at $513 billion USD—about 18% of Brazil’s total agricultural export value during the same period. These findings highlight the negative health impacts of trade-induced deforestation and the resulting regional inequality, because mortality costs and economic benefits are not always shared by the same populations. Source Publication: 
Reducing Carbon Using Regulatory and Financial Market Tools
Reducing Carbon Using Regulatory and Financial Market Tools
Key Takeaways This study develops a theoretical framework to explore how carbon taxes and financial market tools (e.g., sustainability-linked loans and bonds) interact in reducing carbon emissions. Carbon taxes remain the most effective tool for achieving emission reductions and increasing welfare but are often politically constrained. Carbon-contingent financing provides an alternative incentive for standard agents to adopt green technologies, but its effectiveness depends on the financial resources of environmentally motivated agents who are funding the transition. Although carbon taxes and market-based solutions can coexist, carbon-contingent financing may undermine political support for taxes, potentially reducing their overall effectiveness in addressing emissions. The model’s predictions emphasize the need for a balanced climate strategy, whereby carbon taxes and financial market solutions complement each other by targeting different regions or sectors with distinct characteristics. Source Publication: 
Learning to Coordinate in Firms’ Behaviours  – Dr. Jasmine Yu HAO
Learning to Coordinate in Firms’ Behaviours – Dr. Jasmine Yu HAO
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.

To Imagine the Future of Digital Currencies – Dr. Yang YOU
To Imagine the Future of Digital Currencies – Dr. Yang YOU
As a teacher, I will push myself to understand the expectations of local employers' and the market dynamics of Hong Kong.

From Quantum Physics to Quantitative Marketing – Dr. Chu (Ivy) Dang
From Quantum Physics to Quantitative Marketing – Dr. Chu (Ivy) Dang
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.

Prediction Markets: Driven by Insight or Insider Information?
Prediction Markets: Driven by Insight or Insider Information?
A prediction market is a type of speculative market created for the purpose of making forecasts. Wins and losses are tied to a specific event (such as a U.S. and Israeli airstrike on Iran) or parameter (such as whether the stock market will rise or fall tomorrow), and the final outcome determines the monetary value obtained.
GREEN$ Rewards, How to Better Reward?
GREEN$ Rewards, How to Better Reward?
Looking around the world, waste sorting and recycling have become an unavoidable part of urban governance. Over the past 10 years, the HKSAR Government has, through the “GREEN@COMMUNITY” programme and the “GREEN$” points system, built a community recycling network across Hong Kong, encouraging citizens to integrate recycling into their daily lives.
Critical Juncture of the Third Economic Transformation: The Four Pillar Industries
Critical Juncture of the Third Economic Transformation: The Four Pillar Industries
Hong Kong is a highly developed economy, with nearly 94% of its gross domestic product (GDP) generated by the services sector. However, under the current structure of the services sector, there exists a “dual‑structure trap”: on one hand, high value‑added industries that offer limited employment opportunities; on the other, mass‑market industries with relatively low value added.
When Algorithms Become Consumers: How the AI Agent Economy Is Reshaping the Consumer Industry
When Algorithms Become Consumers: How the AI Agent Economy Is Reshaping the Consumer Industry
Artificial intelligence is evolving from a “copilot” into an “intelligent agent,” and this leap will have an unprecedented impact on the marketing industry.In the past few years, we’ve witnessed how AI, as an efficiency tool, has optimized the marketing value chain: customer service bots have reduced operating costs, generative AI (AIGC) has enabled large‑scale content production, and machine learning has made consumer insights more precise.
China’s Macroeconomic Shift: A Call for Firms to Go Global
China’s Macroeconomic Shift: A Call for Firms to Go Global
China’s economy is currently in a period of deep structural transformation. Despite the potential of its 1.4 billion-strong domestic market, the contraction of the wealth effect triggered by the real estate correction, together with a high household savings rate (exceeding 43% in 2024) and weak consumer confidence, is constraining the release of domestic demand.

When AI Hallucinates: The Hidden Risks in the Global Large-Model Race
When AI Hallucinates: The Hidden Risks in the Global Large-Model Race
Large language models are increasingly permeating core domains such as knowledge production, business analysis, legal consulting, and medical decision-making. A problem that was once often regarded as a mere technical flaw is rapidly becoming a new focal point in the global technology race: the “hallucination” of large language models—namely, the tendency of a model, when lacking any factual basis, to still produce highly “confident,” fluent, yet false answers.
National Two Sessions | Scholars: Five‑Year Plan Should Take into Account Hong Kong’s Positioning and Its Distinctiveness from Mainland Cities
National Two Sessions | Scholars: Five‑Year Plan Should Take into Account Hong Kong’s Positioning and Its Distinctiveness from Mainland Cities
In a recent interview with RTHK, Prof. Heiwai Tang, Associate Dean at HKU Business School, stated that the Five-Year Plan plays an important role in driving Hong Kong's economic transformation and diversification.

2026 National Two Sessions: Everyone Weighs In on the Five‑Year Plan
2026 National Two Sessions: Everyone Weighs In on the Five‑Year Plan
Prof. Heiwai Tang, Associate Dean of HKU Business School, recently shared his insights with Ta Kung Pao on the need for a formal Five-Year Plan with a 'concrete action list' for Hong Kong. Prof. Tang stated that Hong Kong’s traditional "small government" mindset and reliance on short-term fixes are no longer sufficient to tackle "deep-seated structural challenges" such as housing affordability, an ageing population, wealth disparity, and limited upward mobility for youth.

Prediction Markets: Driven by Insight or Insider Information?
Prediction Markets: Driven by Insight or Insider Information?
A prediction market is a type of speculative market created for the purpose of making forecasts. Wins and losses are tied to a specific event (such as a U.S. and Israeli airstrike on Iran) or parameter (such as whether the stock market will rise or fall tomorrow), and the final outcome determines the monetary value obtained.