Slow Decay of Impact in Equity Markets
2015 ◽
Vol 01
(02)
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pp. 1550007
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Raw Data
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Using a proprietary dataset of meta-orders and prediction signals, and assuming a quasi-linear impact model, we deconvolve market impact from past correlated trades and a predictable return component to elicit the temporal dependence of the market impact of a single daily meta-order, over a 10-day horizon in various equity markets. We find that the impact of single meta-orders is to a first approximation universal and slowly decays to zero (or to a small value), possibly as a power-law. We show that autocorrelated order-flows and trade information contents fully accounts for the apparent plateau observed in the raw data. We discuss the possible bias introduced by the quasi-linear assumption.
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1993 ◽
Vol 3
(3)
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pp. 237-259
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2021 ◽
Vol 8
(3)
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