This research aims to study the influences of sustainability management of environmental social and governance on sustainable corporate finance of the listed companies in the Stock Exchange of Thailand including 1) the listed companies which have been selected to continuously get the Thailand Sustainability Investment award all of 29 companies and 2) the listed companies which have been selected to discontinuously get the Thailand Sustainability Investment award all of 17 companies for 6 years from 2015 to 2018. This research is the mixed method research in both the Quantitative Research by using Descriptive Statistic Analysis Comparison of means Analysis Correlation Coefficient Analysis and Panel Data Regression Analysis with Hausman Test and the Qualitative Research by in-depth interview with 5 persons of the management of the Thailand Sustainability Investment awarded companies. The research results revealed that in continued Thailand Sustainability Investment awarded companies the sustainability management of Environmental has negatively statistically significantly influenced the sustainable corporate finance by making Debt to Assets (DAR) to decrease and positively statistically significantly influenced it by making Market Value (TBQ) Return on Equity (ROE) and Return on Assets (ROA) to increase. In discontinued Thailand Sustainability Investment awarded companies it found that the sustainability management of Social has negatively statistically significantly influenced sustainable finance by making Debt to Assets (DAR) to decrease and the sustainability management of governance has positively statistically significantly influenced sustainable corporate finance by making Market Value (TBQ) Return on Assets (ROA) and Return on Equity (ROE) to increase.

The research objective was to study social responsibility corporate governance mechanisms and audit quality that affect the operations of companies listed on the Stock Exchange of Thailand. The population used in this study was 76 companies listed on the Stock Exchange of Thailand. The annual financial data was from year 2016 to 2020. The data were analyzed using descriptive statistics such as mean standard deviation percentage and inferential statistics such as correlation analysis (Pearsons Correlation Coefficient) and Multiple Regression Analysis. The study found that the social responsibility on consumer responsibility (PRCI) was positively correlated with market share (MS). Environmental stewardship (EN) was positively correlated with Return on Assets (ROA) and company value (NVP). Innovative and outreach (CSRI) is negatively correlated with Return on Assets (ROA) and company value (NVP). Community or social development (CID) was negatively correlated with Return on Assets (ROA) and company value (NVP). Fair operation (SFOP) was negatively correlated with market share (MS). Anti-corruption (AC) was negatively correlated with market share (MS). Institutional investor shareholding (IS) was positively correlated with Return on Assets (ROA). Number of meetings (NBM) was negatively correlated with Return on Assets (ROA) and market share (MS). Institutional investor shareholding (IS) was negatively correlated with company value (NVP). Audit firm size (size) was positively correlated with Return on Assets (ROA) and company value (NVP) but negatively correlated with market share (MS). Compensation paid by auditors to LN clients (compensation) was positively correlated with company value (NVP).

The research objectives were to study the correlation between the social information disclosure and the performance and the impact of corporate governance on the correlation between the social information disclosure and the performance of companies listed on The Stock Exchange of Thailand SET100 group. The information was collected from the notes to the financial statements annual registration statements (Form 56-1) and annual reports from 2016 to 2020 of 68 companies. Data were analyzed by using descriptive statistics such as mean standard deviation percentage and inferences statistics include Multiple Regression Analysis. The study results found that the social information disclosure on consumer responsibility is in line with Return on Equity (ROE). The disclosure on innovation and innovation dissemination from social responsibility practices correlates in the negative direction to Return on Equity (ROE). In addition the disclosure on anti-corruption was inversely related to Return on Assets (ROA). On the impact of corporate governance on the size of the Board of Directors and the shareholding proportion of the major shareholders there is a negative correlation between social information disclosure on anti-corruption and Rate of Return on Assets (ROA). There is a negative correlation between the proportion of independent directors and social information disclosure on innovation and innovation dissemination from social responsibility practices and Return on Assets (ROA). There is a positive correlation between the percentage of shares held by management and directors and social information disclosure on coporate governance and environmental management and Return on Assets (ROA). There is a negative correlation between the percentage of shares held by management and directors & the position merging of Managing Director and Chairman of the Board and social information disclosure on human right records and Return on Assets (ROA). There is a positive correlation between the merging of the Managing Director & Chairman of the Board and social information disclosure on consumer responsibility and Return on Assets (ROA). There is a positive correlation between size of the board of directors & the shareholding proportion of the major shareholders and social information disclosure on human right records and Rate of Return on Equity (ROE). There is a positive correlation between size of the board of directors the proportion of independent directors shareholding percentage of major shareholders and the position merging of Managing Director and Chairman of the Board and social information disclosure on consumer responsibility and Rate of Return on Equity (ROE). There is a negative correlation between size of the board of directors the proportion of independent directors and the shareholding proportion of the major shareholders and social information disclosure on innovation and innovation dissemination from social responsibility practices and Rate of Return on Equity (ROE). There is a negative correlation between shareholding proportion of executives & directors and social information disclosure on human right records and innovation and innovation dissemination from social responsibility practices and Rate of Return on Equity (ROE). There is a positive correlation between and the merging of the Managing Director & Chairman of the Board and social information disclosure of fair treatment of workers and Return on Equity (ROE). The correlations are statistically significant at 0.01 and 0.05 levels.

This research aimed to study the influence of P/E ratio and market capitalization on returns of the securities in the energy sector in the Stock Exchange of Thailand. In this research the researcher has studied and collected data from the closing prices of the securities in energy sector that are currently traded in the Stock Exchange of Thailand. From January 2015 to December 2019 from the Stock Exchange of Thailand 15 companies and used descriptive analysis mean and standard deviation to test the relationship between independent variables by using correlation analysis and multiple regression analysis to determine the influence of P/E ratio and market capitalization on returns of the securities in the energy sector. The results of the research showed that the P/E ratio had a significant positive influence on returns of the energy securities in the Stock Exchange of Thailand. The market capitalization factor also found that it had no influence on returns of the energy securities in the Stock Exchange of Thailand.

This research aims to study the relationship between corporate governance assessment and performance: A case study of listed companies in the Stock Exchange of Thailand. The data was collected from the Corporate Governance Report of Thai Listed Companies and the Thai Institute of Directors with excellent very good and good CG scores for five consecutive years. The data obtained was based on financial statements annual reports and annual registration statements (Form 56-1) from 2015 to 2019 for 214 companies in total. Descriptive and inferential statistics were used for data analysis i.e. Pearson’s correlation coefficient and multiple regression. The findings revealed that corporate governance i.e. the proportion of independent directors the proportion of managerial ownership CEO authority merging and the proportion of meeting attendance of the board had a positive relationship with the performance of listed companies with significance levels of 0.01 and 0.05. The measurement was based on gross profit margin (GPM) return on assets of shareholders return on sales (ROS) and earnings per share (EPS).