COMPARATIVE STUDY OF WINNER AND LOSER STOCK PORTFOLIOS' PERFORMANCE IN THE MANUFACTURING SECTOR OF INDONESIA STOCK EXCHANGE

The purpose of this study is to compare the performance of the winner and loser stock shares portfolio in the Manufacturing Sector on the IDX. Data collection method in this study uses non participant observation method. The number of samples is 134 companies with census method. Data analysis techniques used are two average difference tests. The results of this study indicate that the stock winner stock portfolio performance in the subsequent ownership period results in lower performance than the period of its formation, while the performance of the loser stock portfolio period of ownership further results in a higher performance than the formation period, but there is no significant difference between portfolio performance winner-loser stock period formation with subsequent ownership period and there is no significant difference between the stock winner stock portfolio performance and the performance of the stock portfolio of loser shares and market index in the next ownership period. KEY WORDS Stock portfolio, performance, public service, business