Premaratne SCMadubashini KLN202120212021Madubashini, K.L.N. (2021). Analyzing performance of acquiring firms across different sectors in Colombo stock exchange using data mining [Master's theses, University of Moratuwa]. Institutional Repository University of Moratuwa. hhttp://dl.lib.uom.lk/handle/123/20426http://dl.lib.uom.lk/handle/123/20426This study is conducted to observes the post-acquisition performance of merge and acquiring deals in Sri Lanka in the long run in terms of accounting based measure and market based measure, using mean comparison and event study methods respectively, for the merger and acquisition deals announced in between 2002 and 2014. The results indicate that mergers and acquisitions negatively affect the post-acquisition performance of the acquiring companies in Sri Lanka. The results further reveal that the overreaction in response to the merger and acquisition announcement made by the market is not corrected itself within a short period of time and corrects itself in the long-run.enMERGERS AND ACQUISITIONSPOST-ACQUISITION PERFORMANCEMEAN COMPARISONEVENT STUDYINDUSTRY SECTORSDATA MININGCOLOMBO STOCK EXCHANGEINFORMATION TECHNOLOGY- DissertationCOMPUTER SCIENCE - DissertationThesis-AbstractITMsc. in Information TechnologyDepartment of Information TechnologyTH4554