The purpose of this study was to examine and analyse the effect of XBRL, Voluntary Disclosure, Volatility, Audit Quality, Firm Size, and Stock Turnover on Information Asymmetry with Corporate Governance as a moderating variable in manufacturing companies listed on the Indonesian Stock Exchange. The population of this research are all manufacturing companies listed on the Indonesian Stock Exchange for the 2010-2020 periods as many as 125 companies. The sample of this study used purposive sampling method so that the selected sample amounted to 81 companies. The analytical technique used in this research is panel data regression analysis and moderating test. XBRL has a negative and insignificant effect on information asymmetry. However, in 2010-2014 where before the adoption of XBRL, XBRL had a positive and insignificant effect on information asymmetry. Voluntary disclosure has a positive and significant effect on information asymmetry. However, in 2010-2014 where before the adoption of XBRL, voluntary disclosure had no effect on information asymmetry. Volatility has no effect on information asymmetry. Audit quality has no effect on information asymmetry. Firm Size has no effect on information asymmetry. Stock turnover has no effect on information asymmetry. Variables good governance do not moderate the effect of XBRL, voluntary disclosure, volatility, audit quality, firm size, and stock turnover on information asymmetry. Keywords: XBRL, Voluntary Disclosure, Volatility, Audit Quality, Firm Size, Stock Turnover, Information Asymmetry, Good Governance.