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- Title
Immediate price impact of a stock and its warrant: Power-law or logarithmic model?
- Authors
Xu, Hai-Chuan; Jiang, Zhi-Qiang; Zhou, Wei-Xing
- Abstract
Based on the order flow data of a stock and its warrant, the immediate price impacts of market orders are estimated by two competitive models, the power-law model (PL model) and the logarithmic model (LG model). We find that the PL model is overwhelmingly superior to the LG model, regarding the robustness of the estimated parameters and the accuracy of out-of-sample forecasting. We also find that the price impacts of ask and bid orders are consistent with each other for filled trades, since significant positive correlations are observed between the model parameters of both types of orders. Our findings may provide valuable insights for optimal trade execution.
- Subjects
MARKET orders; ROBUST statistics; LOGARITHMIC functions; TRANSCENDENTAL functions; LOGARITHMS
- Publication
International Journal of Modern Physics B: Condensed Matter Physics; Statistical Physics; Applied Physics, 2017, Vol 31, Issue 8, p-1
- ISSN
0217-9792
- Publication type
Article
- DOI
10.1142/S0217979217500485