Identifikace investorových kognitivních zkreslení z dostupných obchodních dat

This bachelor’s thesis examines whether transaction data from one anonymized investor can be used to identify behavioral patterns consistent with the disposition effect and anchoring to the purchase price. The empirical part is based on real trading records from the period 2020-2024 and is designed as a quantitative case study. The analysis uses a binomial test, Welch’s t-test, a PGR/PLR analysis inspired by Odean’s approach, a difference-in-proportions test, logistic regression, and an event study based on cumulative abnormal returns. The basic analysis of realized sales and holding periods did not confirm the disposition effect, while the control PGR/PLR analysis provided partial support for its presence. In the case of anchoring, the results show that sales above the purchase price were more often realized close to the purchase price than sales below it. This suggests that the purchase price may have partly functioned as an individual reference point. The supplementary analysis of subsequent price movements after transactions did not provide clear or robust conclusions.