In recent years, several companies in India have engaged in acquisition activities as part of their growth and expansion strategies. The acquisition process involves one company acquiring another company, which can have various implications for the financial health and operational efficiency of both the acquiring and target companies. This study aims to analyze the comparison of the financial performance of companies listed on the Bombay Stock Exchange and National Stock Exchange before and after making acquisitions. The study uses a quantitative method with a descriptive approach, and the data used are secondary data obtained from the Bombay Stock Exchange. Data analysis in this study is divided into two parts: descriptive statistical tests and hypothesis testing consisting of paired sample t-tests. The variables used to measure a company's financial performance consist of the Liquidity Ratio (Current Ratio), Profitability Ratios (PBT Margin %, NP Margin % and ROA%), and Per Share Ratios (Basic EPS). Based on the results, it is evident that out of the five financial ratios that have been tested, mostly only two financial ratioS experience significant differences in a company after making an acquisition. The other ratios do not show significant differences. This suggests that the company has not fully optimized its performance in achieving the expected synergy through the acquisition process.