Does Good Luck Make People Overconfident? Evidence from a Natural Experiment in China

42 Pages Posted: 30 Jul 2018 Last revised: 21 Nov 2019

See all articles by Huasheng Gao

Huasheng Gao

Fanhai International School of Finance, Fudan University

Donghui Shi

Shanghai Stock Exchange

Bin Zhao

Thammasat Business School

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Date Written: November 15, 2019

Abstract

This paper examines the changes in households’ trading behavior after winning an IPO allotment in China—a purely luck-driven event. We find that these households subsequently become overconfident: they trade more frequently and lose more money relative to other households. This effect is stronger when households are inexperienced and when households’ pre-existing level of overconfidence is low. Our findings are not explained by wealth effects or house money effects. Overall, our evidence indicates that the experience of good luck makes people overconfident about their prospects.

Keywords: Good Luck; Turnover Rate; Trading; Overconfidence; IPO Subscription

Suggested Citation

Gao, Huasheng and Shi, Donghui and Zhao, Bin, Does Good Luck Make People Overconfident? Evidence from a Natural Experiment in China (November 15, 2019). 31st Australasian Finance and Banking Conference 2018, Available at SSRN: https://ssrn.com/abstract=3221954 or http://dx.doi.org/10.2139/ssrn.3221954

Huasheng Gao

Fanhai International School of Finance, Fudan University ( email )

Beijing West District Baiyun Load 10th
Shanghai, 100045
China
2165642222 (Phone)
2165642222 (Fax)

Donghui Shi

Shanghai Stock Exchange ( email )

Shanghai 200120
China

Bin Zhao (Contact Author)

Thammasat Business School ( email )

2 Prachan Road
Pra Nakorn
Bangkok, Bangkok 10200
Thailand

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