Chen, RongjuanDong, Ruoxi2022-12-272022-12-272023-01-03978-0-9981331-6-4https://hdl.handle.net/10125/103225Social media has become a communication tool, but also a valuable database for researchers and practitioners to gather information, share knowledge, as well as express opinions about stock performance. The sentiment embedded in social media content can be analyzed to predict stock performance. Although numerous past studies have attempted to predict stock price movement using social media sentiment, some emerging analytical tools, like existing lexicons, may require further testing and validation in a financial decision making context. In this study, we develop and test predictive models for stock price and trend forecasting. By using a large-scale sample of tweets collected from Twitter, related to four companies, Apple, Google, Microsoft, and Netflix, we propose a novel decision tree approach to stock performance prediction. Based on our findings, we then provide theoretical and practical implications and discuss the directions for future work.10engAttribution-NonCommercial-NoDerivatives 4.0 InternationalJudgement, Big Data-Analytics, and Decision-makingdecision treesentiment analysissocial mediastock markettext10.24251/HICSS.2023.592