A stock (Popularly known as shares or equity) is a type of security that signifies proportionate ownership in the issuing organization. Shares are bought and sold predominantly on stock exchange, though there can be private sales as well, and is the foundation of nearly every portfolio. These transactions have to conform to government regulations organization like SEBI, which are meant to protect investors from fraudulent practices. In this research paper an attempt is made to analyze the investment tendency in stock of public sector companies and private sector companies. The study also consist a comparative evaluation of the stock performance of public as well as private companies. For the evaluation, last three year data of stock performance has been used. This study also finds out the factors effecting the investment in stocks and measures the performance of stocks through the some models which are used worldwide to evaluate the performance of stock through portfolio (Risk/Return) Sharpe Measure, Treynor Measure, and jensens measure of performance. The performance review must generate and provide information that will help the investor to assess any need for rebalancing of his investments and sell and buy decision. The purpose of choosing this topic is to know how the stock portfolio evaluated and which sector stock is performing well and risk and return relationship.
                                
                                
                                    
                                    Portfolio evaluation, Performance evaluation, Standard deviation, Benchmark comparision, Sharpe measure, Treynor measure, Jensen measure
                                
                                
                                
                                
                                    
                                        
                                        
                                        
                                        
                                            
                                                
                                                    International Journal of Trend in Scientific Research and Development - IJTSRD having
                                                    online ISSN 2456-6470. IJTSRD is a leading Open Access, Peer-Reviewed International
                                                    Journal which provides rapid publication of your research articles and aims to promote
                                                    the theory and practice along with knowledge sharing between researchers, developers,
                                                    engineers, students, and practitioners working in and around the world in many areas
                                                    like Sciences, Technology, Innovation, Engineering, Agriculture, Management and
                                                    many more and it is recommended by all Universities, review articles and short communications
                                                    in all subjects. IJTSRD running an International Journal who are proving quality
                                                    publication of peer reviewed and refereed international journals from diverse fields
                                                    that emphasizes new research, development and their applications. IJTSRD provides
                                                    an online access to exchange your research work, technical notes & surveying results
                                                    among professionals throughout the world in e-journals. IJTSRD is a fastest growing
                                                    and dynamic professional organization. The aim of this organization is to provide
                                                    access not only to world class research resources, but through its professionals
                                                    aim to bring in a significant transformation in the real of open access journals
                                                    and online publishing.