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Journal of Banking & Finance Vol. 106 2019

Price discrimination against retail Investors: Evidence from mini options

Yubin Li1; Chen Zhao1; Zhaodong Zhong2

1 Southwestern University of Finance and Economics · 2 Rutgers, The State University of New Jersey

Abstract

This paper studies the rise and fall of “Mini” options that are especially catered to retail investors for popular but high-priced securities. Using transaction-level data, we find that transaction costs of Mini options are much higher than those of standard options and the difference cannot be fully explained by cost-related determinants. Furthermore, we find evidence of price discrimination against retail investors from analyses of price elasticities of option traders, an event-study of changes in bid-ask spreads around earnings announcements, and comparisons of trade prices paid by Mini and standard option traders for the same security at approximately the same time.

DOI
10.1016/j.jbankfin.2019.05.012
Volume
106
Pages
50-64
Language
en
Sources
crossref openalex bibtex:phds-export.bib

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