Penelitian ini bertujuan menganalisis pengaruh dari merger dan akuisisi terhadap kinerja perusahaan pengakuisisi di Bursa Efek Indonesia. Kinerja perusahaan diukur menggunakan current ratio, quiek ratio, return on assets, return on equity, total debt to total sssets, total debt to lotal equity, total assets turnover, prele operating cash flow rcturn on assets dan abnormal return.Penelitian ini menggunakan data dokumenter. Sedangkan populasi penelitian ini meliputi perusahaan publik yang terdaftar di Bursa Efek Indonesia yang pemah melakukan merger dan akuisisi pada periode 2000-2007. Metode pengambilan sampel yang digunakan dalam penelitian ini adalah purposive sampling, yang mana terdapat 33 perusahaan pengakuisisi yang masuk dalam kriteria penelitian ini. Metode analisis data yang digunakan normalitas data dan uji beda Paired Sample T-Test' Abnormal retum dianalisis menggunakan event study, model yang digunakan adalah market model.Hasil pengujian dari hipotesis menunjukkan bahwa terdapat perbedaan signifikan pada rasio culrenl ralio, quick ralio, lotal assets tumover dan total ossets turnover. Namun hasil pengujian terhadap return on assels, relurn on equity, total debt to total assets, total debt to total equity, dan prelax operating cash JIow return on assets tidak terdapat perbedaan yang signifikan.

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This research aims to examine the effect of merger and acquisition on acquirer Companies's performance at Indonesia Stock Exchange. Corporate performance is measured using current ratio, quick ratio, retum on assets, retum on equity, total debt to total assets, total debt to total equity, total assets tumover, pre-tax operating cash flow return on assets and abnormal retum.

This research uses documentary data. ln this research data applied is documenter. While population of this research covers inscribed public company in Indonesia Stock Excange which done merger and acquisition at time line 2000-2007 . Sampling method applied in this research is purposive sampling, which there are 33 acquirer companies entering in this research criterion. Data analysis method data normality, difference test Paired Sample T-Test. While to analysis average abnormal return by event study analysis using market model.

Result from test indicated existence of difference which significance for current ratio, quick ratio, total assets tumover dan total assets tumover. While result testing retum on assets, return on equity, total debt to total assets, total debt to total equity, and pre-tax operating cash flow retum on assets at time line before merger and acquisition doesn't differ from at time line after merger and acquisition.