A framework for Web news items analysis in relation to share prices

We present a general approach for Web news items analysis in relation to stock prices. The framework that we introduce provides the ability to study the impact of events extracted from news on stock prices. The relation between events and price is quantified in terms of the i) paired-samples t-test, ii) McNemar´s test, and iii) confidence and support. The extraction, representation, and visualization of data are key components of the proposed framework. The validation of the framework is based on three case studies, involving Tesco, Shell, and British Petroleum, and the price reaction(s) to different news events.