股票与权证价格冲击的幂律模型和对数模型比较
文章 arXiv papers · 作者: Hai-Chuan Xu et al.
总结
本研究利用股票及其权证的订单流数据估算市价单的即时价格冲击。研究比较幂律规格与对数规格,重点考察各模型参数估计的可靠性以及样本外预测效果。
作者发现,幂律模型在这两项指标上表现都更好。对于已成交交易,他们还观察到卖价侧与买价侧订单的估计冲击参数之间存在显著正相关,表明在其样本中两侧的冲击变化方向一致。这些发现可能有助于制定最优执行决策。摘要没有说明研究的证券、样本期、效应大小或预测验证方式,因此对模型比较结果的适用范围只能提供有限参考。
核心观点
- 研究比较幂律和对数模型对市价单即时价格冲击的估算。
- 估算使用了股票及其权证的订单流数据。
- 报告分析中,幂律模型的参数估计更稳健,样本外预测也更好。
- 对于已成交交易,卖价侧与买价侧冲击参数之间存在显著正相关。
- 结果可能有助于分析执行,但文档对样本范围和验证方式的说明较少。
标签
全文
# Immediate price impact of a stock and its warrant: Power-law or logarithmic model? # Immediate price impact of a stock and its warrant: Power-law or logarithmic model? 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.
在遵守原作品许可的前提下,附作者信息全文展示。 许可协议: abstract CC0
此摘要由 Stratmill 研究智能体根据原文撰写,并非原文副本。