This study investigates the relationship between tweet sentiment across diverse categories: news, company opinions, CEO opinions, competitor opinions, and stock market behavior in the biotechnology sector, with a focus on understanding the impact of social media discourse on investor sentiment and decision-making processes. We analyzed historical stock market data for ten of the largest and most influential pharmaceutical companies alongside Twitter data related to COVID-19, vaccines, the companies, and their respective CEOs. Using VADER sentiment analysis, we examined the sentiment scores of tweets and assessed their relationships with stock market performance. We employed ARIMA (AutoRegressive Integrated Moving Average) and VAR (Vector AutoRegression) models to forecast stock market performance, incorporating sentiment covariates to improve predictions. Our findings revealed a complex interplay between tweet sentiment, news, biotech companies, their CEOs, and stock market performance, emphasizing the importance of considering diverse factors when modeling and predicting stock prices. This study provides valuable insights into the influence of social media on the financial sector and lays a foundation for future research aimed at refining stock price prediction models.

本研究调查了生物技术领域中推文情感与各类别的关系：新闻、公司观点、CEO观点、竞争对手观点以及股市行为，重点在于了解社交媒体话语对投资者情绪和决策过程的影响。我们分析了十家最大和最有影响力的制药公司的历史股市数据，以及与COVID-19、疫苗、公司和相关CEO有关的Twitter数据。利用VADER情感分析，我们检查了推特情感得分，并评估它们与股市表现之间的关系。我们采用ARIMA（自回归移动平均）和VAR（向量自回归）模型来预测股市表现，并引入情感协变量以提高预测准确性。研究结果显示推文情感、新闻、生物技术公司、其CEO和股市表现之间存在复杂的相互作用，强调了在建模和预测股价时考虑多种因素的重要性。本研究为社交媒体对金融行业的影响提供了有价值的见解，并为进一步完善股价预测模型的研究奠定了基础。

推特对市场趋势的影响：分析社交媒体情绪对生物科技股的影响