Students on the Job Market and Placement Record

Students on Job Market

PhD candidates on Job Market, 2018

Ke LIU (CV(Personal site)

Job Market Paper

Dynamic diminishing marginal utility and tacit collusion

Abstract: Diminishing marginal utility is usually treated as a static property in economics, while in many situations it is more appropriately modeled as a dynamic issue. This paper investigates how dynamic diminishing marginal utility influences firms' ability to tacitly collude, and shows that it crucially depends on whether diminishing marginal utility is product-specific or market-wide. When diminishing marginal utility is product-specific, i.e., when a consumer's consumption of one product this period only lowers her marginal utilities of a subset of products next period, collusion is easier to sustain since consumers can switch among firms to avoid utility loss on the equilibrium path, while at least some consumers cannot switch when a firm deviates to capture all consumers. When diminishing marginal utility is market-wide, i.e., when a consumer's consumption of one product this period lowers her marginal utilities of all products next period, collusion is harder to sustain due to endogenous demand fluctuations.

Research Interests

Industrial Organization; Dynamic Games; Applied Microeconomic Theory

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Students' Placement

MPhil/PhD Program in Economics:  Student Placement

2016

Shanghai Finance University 1
School of Economics, Southwestern University of Finance and Economics 1
Southwestern University of Finance and Economics 1
Economic School, Fudan University 1

2015

Dongbei (Northeast) University of Finance and Economics 1
University of International Business and Economics, (UIBE), Beijing 1

2014

Baptist University 1
Central University of Finance and Economics 1
Renmin University 1
Wuhan University 1

2013

Shanghai University of Finance and Economics, Economics  1
Shanghai University of Finance and Economics, Finance   1
Shanghai University of Finance and Economics, School of International Business Administration   1
Shanghai Jiaotong University 1
China Universal Asset Management, Hong Kong 1

2012

Nil

2011

The Hong Kong University of Science and Technology 1
Nankai University  1
Economic Research Dept, HKSAR  1

2010

The Chinese University of Hong Kong 1
The Hong Kong University 1
Nankai University 1
Shanghai University of Finance and Economics 1
Malaysia University 1
Wing Lung Bank 1

2009

Shanghai University of Finance and Economics 1

2008

Max Planck Institute of Economics, Germany 1
National University of Singapore  1

2003-07

Central University of Finance and Economics 1
PMA Investment 1
The Hong Kong Polytechnic University 1
Samsung Economic Research institute of China 1
Samsung Research Center, Beijing 1
Shanghai University of Finance and Economics 2
Sun Yat-Sun University 1
Xiemen University 1