تأثیر گزارشگری محیط زیست و افشای اطلاعات آتی بر سرریز ریسک و تلاطم بازده شرکت‌های پذیرفته شده در بورس اوراق بهادار تهران
محورهای موضوعی : مدیریت
حمیدرضا محمدی
1
,
امیرحسین تائبی نقندری
2
,
محمدرضا شورورزی
3
1 - دانشجوی دکترا، گروه حسابداری، دانشگاه آزاد اسلامی، کرمان، ایران
2 - استادیار، گروه حسابداری، دانشگاه آزاد اسلامی واحد کرمان، کرمان، ایران
3 - دانشیار، گروه حسابداری، دانشگاه آزاد اسلامی واحد نیشابور، نیشابور، ایران
کلید واژه: گزارشگری محیط زیست, افشای اطلاعات آتی, سرریز ریسک, تلاطم بازده, بورس اوراق بهادار تهران.,
چکیده مقاله :
هدف این تحقیق، بررسی تأثیرگزارشگری محیط زیست و اطلاعات آتی بر سرریز ریسک تلاطم بازده بوده است. پژوهش حاضر به لحاظ هدف، کاربردی و بر حسب روش، از نوع توصیفی و پس رویدادی است. جامعه آماری این تحقیق شرکت‌های پذیرفته شده در بورس اوراق بهادار تهران می‌باشند. به‌منظور انتخاب نمونه تحقیق از روش نمونه‌گیری حذفی سیستماتیک استفاده شده است. نمونه انتخابی در بازه زمانی 1402-1398، بر اساس شاخص‌های تعیین شده، 181 شرکت به عنوان نمونه، در نظر گرفته شده است. برای تجزیه‌وتحلیل داده‌ها از نرم‌افزار اقتصادسنجی Eviews استفاده شده است. نتایج نشان داد افشاء گزارشگری محیط زیست بر تلاطم بازده با مقدار معناداری 0.4487 که از سطح خطای 05/0 بزرگتر بوده و نشان از عدم معناداری دارد. همچنین، تأثیر افشاء اطلاعات آتی بر متغیر تلاطم بازده برابر 0246970/0 محاسبه شده است و آماره تی آزمون نیز 930275/2- به‌دست آمده است که با توجه به مقدار معنادار 0035/0، که از سطح خطای 05/0 کوچکتر است، به احتمال 95 درصد افشاء اطلاعات آتی بر تلاطم بازده تاثیر منفی و معناداری دارد. ضریب تأثیر افشاء گزارشگری محیط زیست بر سرریز ریسک با مقدار 110544/5- و آماره تی 200955/8- به دست آمد و نشان داد که افشاء گزارشگری محیط زیست بر سرریز ریسک تأثیر منفی و معناداری دارد. در نهایت، افشاء اطلاعات آتی بر سرریز ریسک مورد بررسی قرار گرفت که ضریب تأثیر افشاء اطلاعات آتی بر متغیر سرریز ریسک برابر 025938/0- وآماره تی آزمون 686384/0- به دست آمد. بنابراین می‌توان گفت افشاء اطلاعات آتی بر سرریز ریسک تأثیر معنادارای ندارد.
The aim of this study was to investigate the effect of environmental reporting and future information on the spillover of return volatility risk. The present study is applied in terms of purpose and descriptive and post-event in terms of method. The statistical population of this study is companies listed on the Tehran Stock Exchange. In order to select the research sample, the systematic exclusion sampling method was used. The selected sample was 181 companies in the period 1402-1398, based on the determined indicators. Eviews econometric software was used to analyze the data. The results showed that environmental reporting disclosure had a significant effect on return volatility with a value of 0.4487, which is greater than the error level of 0.05 and indicates non-significance. Also, the effect of future information disclosure on the return volatility variable was calculated to be 0.0246970 and the t-statistic of the test was -2.930275, which, considering the significant value of 0.0035, which is smaller than the error level of 0.05, there is a 95% probability that future information disclosure has a negative and significant effect on return volatility. The coefficient of influence of environmental reporting disclosure on risk spillover was obtained as -5.110544 and the t-statistic was -8.200955, showing that environmental reporting disclosure has a negative and significant effect on risk spillover. Finally, future information disclosure on risk spillover was examined, and the coefficient of influence of future information disclosure on the risk spillover variable was obtained as -0.025938 and the t-statistic was -0.686384. Therefore, it can be said that future information disclosure does not have a significant effect on risk spillover.
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