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Estimating quadratic variation when quoted prices jump by a constant increment

Jeremy Large

OFRC Working Papers Series from Oxford Financial Research Centre

Abstract: Financial assets' quoted prices normally change through frequent revisions, or jumps. For markets where quotes are almost always revised by the minimum price tick, this paper proposes a new estimator of Quadratic Variation which is robust to microstructure effects. It compares the number of alternations, where quotes are revised back to their previous price, to the number of other jumps. Many markets exhibit a lack of autocorrelation in their quotes' alternation pattern. Under quite general 'no leverage' assumptions, whenever this is so the proposed statistic is consistent as the intensity of jumps increases without bound. After an empirical implementation, some useful corollaries of this are given.

New Economics Papers: this item is included in nep-ecm
Date: 2005
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