Margin setting with high-frequency data

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Title: Margin setting with high-frequency data
Authors: Cotter, John
Longin, François
Permanent link: http://hdl.handle.net/10197/1699
Date: 27-Jun-2006
Abstract: Both in practice and in the academic literature, models for setting margin requirements in futures markets classically use daily closing price changes. However, as well documented by research on high-frequency data, financial markets have recently shown high intraday volatility, which could bring more risk than expected. This paper tries to answer two questions relevant for margin committees in practice: is it right to compute margin levels based on closing prices and ignoring intraday dynamics? Is it justified to implement intraday margin calls? The paper focuses on the impact of intraday dynamics of market prices on daily margin levels. Daily margin levels are obtained in two ways: first, by using daily price changes defined with different time-intervals (say from 3 pm to 3 pm on the following trading day instead of traditional closing times); second, by using 5-minute and 1-hour price changes and scaling the results to one day. Our empirical analysis uses the FTSE 100 futures contract traded on LIFFE.
Funding Details: University College Dublin. Smurfit School of Business
ESSEC Business School
Type of material: Working Paper
Keywords: Clearinghouse;Extreme value theory;Futures markets;High-frequency data;Intraday dynamics
Subject LCSH: Margins (Futures trading)
Futures market
Language: en
Status of Item: Not peer reviewed
Appears in Collections:Business Research Collection

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