做市中的价差、波动率与成交量建模
文章 arXiv papers · 作者: Jack Sarkissian
总结
本文介绍一种模型,将买卖价差与波动率、交易量、时间跨度及可测量的市场微观结构因素联系起来。模型将价差视为可用订单流动性和交易价格冲击相互作用的结果。交易量较低时,增加流动性可能提高价格准确性并缩小价差;超过一定程度后,更多流动性反而可能使价格变差。
模型将价差走势和高低价柱与这些市场条件联系起来,并利用这些关系构建旨在提升做市利润的运营价差优化问题。本文对模型及其预期用途作了概念性说明,但没有提供方程、数据集、实证结果或具体优化流程。因此,仅凭这段介绍无法独立评估其主张。
核心观点
- 买卖价差反映了订单流动性与交易冲击之间的相互作用。
- 交易量较低时,增加流动性可能提高价格准确性并缩小价差。
- 超过一定程度后,增加流动性可能降低价格质量。
- 模型将价差和高低价柱与成交量、波动率、时间跨度及微观结构参数联系起来。
- 做市商可以利用所提出的关系优化运营价差。
标签
全文
# Spread, volatility, and volume relationship in financial markets and market making profit optimization # Spread, volatility, and volume relationship in financial markets and market making profit optimization We study the relationship between price spread, volatility and trading volume. We find that spread forms as a result of interplay between order liquidity and order impact. When trading volume is small adding more liquidity helps improve price accuracy and reduce spread, but after some point additional liquidity begins to deteriorate price. The model allows to connect the bid-ask spread and high-low bars to measurable microstructural parameters and express their dependence on trading volume, volatility and time horizon. Using the established relations, we address the operating spread optimization problem to maximize market-making profit.
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