This study aims to examine the influence of current ratio and debt to equity ratio, both simultaneously and partially to stock liquidity using trading volume activity. Trading volume activity is a proxy of stock liquidity. The samples of this research are the manufacturing firms listed in BEI (Indonesia Stock Exchange) in 2009 to 2012. The Samples are collected using purposive sampling method and resulted 131 companies become the final samples. The sample collection techniques using secondary sample from annual report were obtained from the website www.idx.co.id. Hypothesis testing was conducted using multiple regression model. The results of this research show that (1) current ratio and debt to equity ratio simultaneously effect to stock liquidity using trading volume activity, (2) current ratio significantly influence on stock liquidity using trading volume avtivity, and (3) debt to equity ratio significantly influence on stock liquidity using trading volume activity. Keywords: Current Ratio, Debt to Equity Ratio, Stock Liquidity, and Trading Volume Activity.