Ekonomi Bisnis Volume 27, Nomor 1, Juni 2021 P-ISSN: 1411 - 545X | E ISSN: 2715-1662 471 JEB ANALYSIS OF DIFFERENCES OF PRICE EARNING RATIO (PER) AND STOCK LIQUIDITY BEFORE (10 DAYS) AND AFTER (10 DAYS) STOCK SPLIT IN GO PUBLIC COMPANY IN INDONESIA STOCK EXCHANGE PERIOD 2009 – 2016 Hadi Suharno¹ University of Islam Syekh Yusuf, Tangerang hsuharno@unis.ac.id Afriani² afriani@gmail.com University of Islam Syekh Yusuf, Tangerang ABSTRACT The purpose of this research is to know (1) difference of stock liquidity level before and after stock split (2) difference of Price Earning Ratio (PER) before and after stock split.The population used in this study are all companies listed on the Indonesia Stock Exchange. While the sample selection is taken by using purposive sampling method. The number of samples used by researchers are 62 companies listed on the Indonesia Stock Exchange and stock split in the period 2009-2016.Based on the results of research indicate that there is a significant difference in Price Earning Ratio (PER), either before stock split or Price Earning Ratio (PER) after stock split. With paired sample t-test results obtained t test with t count> t table (3.912> 2,000) can be concluded then Ho accepted means there is a difference between price earnings ratio (PER) of each sample company, either before stock split or price Earnings ratio (PER) after the stock split event.With paired sample t-test obtained t test results with t count> t table (1,844> 2,000) can be concluded then Ho accepted means there is no difference between the stock liquidity of each sample company, either before the stock split and the liquidity of stock after the event Stock split. Keywords: Stock Liquidity, Price Earning Ratio (PER), Stock Split A. INTRODUCTION PREFACE Capital market as one means to obtain external sources of funds The steps taken include managing the company well and transparently, resulting in good corporate performance and doing go public by selling shares in the capital market. "Stock split has become one of the tools used by management to shape the firm's market price" (Marwata, 2001: 152). Investors decide to buy or sell the shares based on an assessment of whether the stock price is under valued (too low) or er valued (too high). Assessment of under valued or over valued can be done through Price Earning Ratio. According to Retno Miliasih (2000: 134-135) those who support the stock split believe that lower stock prices will increase the ability of such shares to be traded at any time and improve market