Economics at your fingertips  

Expiration‐Day Effects of Stock and Index Futures and Options in Sweden: The Return of the Witches

Caihong Xu

Journal of Futures Markets, 2014, vol. 34, issue 9, 868-882

Abstract: Recently, the NASDAQ‐OMX Nordic Exchange announced a change of expiration day for the OMXS 30 index futures and options. The OMXS 30 index derivatives used to expire on the fourth Friday of the expiry month while derivatives on individual stocks expired on the third Friday. After the change, derivatives on both the index and individual stocks expire on the third Friday of the expiry month making the third Friday the “quadruple witching Friday” as stock futures, stock options, index futures, and index options expire simultaneously. This contractual change provides a unique opportunity to investigate its impact on expiration‐day effects. The results show that there is hardly any expiration‐day effect due to the derivatives' expirations before or after the contractual change, except the abnormally higher trading volumes at the stock derivatives' expirations before the change, and on the quadruple witching Fridays after the change. Most importantly, there is no significantly intensified abnormal volume, volatility, or price distortion effect due to the seemingly “extraordinary” change in the OMXS 30 index derivatives, despite the quadruple witching expirations after the change. © 2013 Wiley Periodicals, Inc. Jrl Fut Mark 34:868–882, 2014

Date: 2014
References: Add references at CitEc
Citations: View citations in EconPapers (1) Track citations by RSS feed

Downloads: (external link)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link:

Ordering information: This journal article can be ordered from
http://www.blackwell ... bs.asp?ref=0270-7314

Access Statistics for this article

Journal of Futures Markets is currently edited by Robert I. Webb

More articles in Journal of Futures Markets from John Wiley & Sons, Ltd.
Bibliographic data for series maintained by Wiley Content Delivery ().

Page updated 2019-03-19
Handle: RePEc:wly:jfutmk:v:34:y:2014:i:9:p:868-882