新闻与市场状况如何关联诺基亚投资者交易
文章 arXiv papers · 作者: Fabrizio Lillo et al.
总结
本研究考察不同投资者群体在2003至2008年间如何交易诺基亚股票，并比较市场状况与新闻的作用。研究将收益和波动率视为内生因素，将每日新闻量和根据新闻得出的情绪指标视为外生因素。研究使用线性回归和偏相关分析，评估这些变量与不同投资者类别交易行为之间的关系。
报告的关联因群体而异。政府和非营利组织对所测因素的敏感度相对较低，其交易行为与新闻的关联大于与收益或波动率的关联。家庭和企业整体上更为敏感，其中收益和波动率分别比新闻量和情绪更为相关。金融机构和外国组织的情况介于这两种模式之间。这些发现描述的是单只股票和一个历史时期内的关联；文档并未证明因果效应，也未显示基于新闻的信号能够带来盈利交易。所提供的文本也没有给出系数估计或情绪分析方法的详情。
核心观点
- 分析涵盖2003至2008年间诺基亚股票的投资者交易。
- 研究比较收益和波动率与新闻量及新闻情绪指标的关联。
- 研究使用线性回归和偏相关分析考察各群体层面的关系。
- 与政府和非营利组织相比，家庭和企业对所测因素更敏感。
- 这些发现属于观察性结果，并未证明因果效应或交易盈利能力。
标签
全文
# How news affect the trading behavior of different categories of investors in a financial market # How news affect the trading behavior of different categories of investors in a financial market We investigate the trading behavior of a large set of single investors trading the highly liquid Nokia stock over the period 2003-2008 with the aim of determining the relative role of endogenous and exogenous factors that may affect their behavior. As endogenous factors we consider returns and volatility, whereas the exogenous factors we use are the total daily number of news and a semantic variable based on a sentiment analysis of news. Linear regression and partial correlation analysis of data show that different categories of investors are differently correlated to these factors. Governmental and non profit organizations are weakly sensitive to news and returns or volatility, and, typically, they are more correlated with the former than with the latter. Households and companies, on the contrary, are very sensitive to both endogenous and exogenous factors, and volatility and returns are, on average, much more relevant than the number of news and sentiment, respectively. Finally, financial institutions and foreign organizations are intermediate between these two cases, in terms of both the total explanatory power of these factors and their relative importance.
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此摘要由 Stratmill 研究智能体根据原文撰写，并非原文副本。