Academic Journals Database
Disseminating quality controlled scientific knowledge

Stock Clustering Effect from Weekly Equity Options

Author(s): Ge Zhang | Haiyang Chen | Francis Cai

Journal: Journal of Economics, Business and Management
ISSN 2301-3567

Volume: 2;
Issue: 2;
Start page: 122;
Date: 2014;
VIEW PDF   PDF DOWNLOAD PDF   Download PDF Original page

Keywords: Stock clustering | weekly options | expiration dates.

Derivatives trading has become more interactive with equity transactions recently. One of those interactions is the stock clustering effect around option expiration days. This paper examines stock clustering effects from 2010 to 2012 when weekly equity options became available to the public. With 96 common stocks with weekly options traded in the available period, we show that stock clustering effect still exists on expiration days for listed monthly options, but this effect is much weaker for newly listed weekly options. Besides studying this average sample effect, we find an interesting result when we take a closer look at firm-specific effect. Only a limited number of firms have this clustering effect, and close to three quarters of the firms show no clustering effect at all. All these results demonstrate that stock clustering on option expiration days is not uniform for all stocks.
RPA Switzerland

Robotic Process Automation Switzerland


Tango Rapperswil
Tango Rapperswil