Stock market is the heart of any economy whether if it’s developing or a developed one. Stock split is done in order to lower the price of a certain company stock prices when it is considered too high. This research purpose is too examined the impact of the stock split on the liquidity of the stock. This research using Bid-Ask Spread and Trading volume activity as its indicator to measure the difference before and after stock split. This research using Wilcoxon signed test to verify whether there is a significant difference in the stock before and after stock split. The result shows that the stock liquidity increases after stock split