Price Volatility and Futures Margins
Futures exchanges raise margins in environments characterized by recent substantial increases in futures price volatility, and they raise margins in contracts that have recently shown the largest volatility increase. Volatility then tends to fall. This reduction is smaller - especially the troublesome jump component of volatility that is derived from a Poisson jump-diffusion process of futures daily returns - when the earlier margin increase is larger. The exchanges appear to raise margins when they perceive the earlier volatility increase to be more permanent. Conversely, exchanges reduce margins after an earlier decrease in volatility, but they seem anxious to reduce margins well before volatility has bottomed out. After the margin reduction, volatility continues to decline and by a greater amount for the cases when the earlier reduction in margins was larger.
If you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
As the access to this document is restricted, you may want to look for a different version under "Related research" (further below) or search for a different version of it.
|Date of creation:||Nov 1995|
|Contact details of provider:|| Postal: Centre for Economic Policy Research, 77 Bastwick Street, London EC1V 3PZ.|
Phone: 44 - 20 - 7183 8801
Fax: 44 - 20 - 7183 8820
|Order Information:|| Email: |
When requesting a correction, please mention this item's handle: RePEc:cpr:ceprdp:1263. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: ()
If references are entirely missing, you can add them using this form.