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Callable bull/bear contracts, call auction sessions, and price manipulations: Evidence from Hong Kong
Author(s) -
Lei Adrian C. H.,
Ma Xiaorong,
Yick Martin H. Y.
Publication year - 2020
Publication title -
journal of futures markets
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.88
H-Index - 55
eISSN - 1096-9934
pISSN - 0270-7314
DOI - 10.1002/fut.22105
Subject(s) - session (web analytics) , callable bond , closing (real estate) , business , price discovery , financial economics , economics , microeconomics , monetary economics , advertising , finance , bond , futures contract
Call auction sessions are widely adopted to improve the price discovery process. The suspension of the closing call auction session (CAS) of the Hong Kong Stock Exchange (HKEx) in 2009 and the reintroduction of an enhanced CAS in 2016 provide us a unique experimental environment to assess the effectiveness of the two different CAS models in reducing market manipulation. In examining the probability of mandatory call events (MCEs) of callable bull/bear contracts (CBBCs), we find the enhanced CAS model being more effective in price manipulation reduction. We also find the enhanced CAS reducing price manipulation in the preopening auction session.