Assessing market uncertainty by means of a time-varying intermittency parameter for asset price fluctuations

Details Assessing market uncertainty by means of a time-varying intermittency parameter for asset price fluctuations Assessing market uncertainty by means of a time-varying intermittency parameter for asset price fluctuations

2012-02-22

arxiv.org/abs/1202.4877v1

Economy

Quantitative Finance

Statistical Finance

8 pages, 4 figures, 2 tables

Scientific paper

Maximum likelihood estimation applied to high-frequency data allows us to quantify intermittency in the fluctu- ations of asset prices. From time records as short as one month these methods permit extraction of a meaningful intermittency parameter {\lambda} characterising the degree of volatility clustering of asset prices. We can therefore study the time evolution of volatility clustering and test the statistical significance of this variability. By analysing data from the Oslo Stock Exchange, and comparing the results with the investment grade spread, we find that the estimates of {\lambda} are lower at times of high market uncertainty.

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