محتوای اطلاعاتی خبر شیوع کووید 19 در بورس اوراق بهادار تهران

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استادیار، گروه حسابداری، دانشگاه شهید بهشتی، تهران، ایران

2 کارشناسی ارشد حسابداری، دانشگاه شهید بهشتی، تهران، ایران.

چکیده

بدون تردید سرمایه‌گذاری در بورس، بخش مهمی از اقتصاد کل کشور را تشکیل می‌دهد و اقتصاد ملی به‌شدت متأثر از عملکرد بازار سهام است­. ازاین‌رو بررسی و شناسایی عوامل تأثیرگذار بر بازدهی سهام برای مدیران و سرمایه‌گذاران از اهمیت بالایی برخوردار است. هدف از این پژوهش، بررسی محتوای اطلاعاتی اعلام خبر شیوع ویروس کووید 19 در بازار سرمایه ایران می­‌باشد. این پژوهش ازنظر هدف کاربردی بوده و ازنظر ماهیت یک­ پژوهش رویدادی محسوب می­گردد. داده­­های موردنیاز برای پژوهش از طریق مراجعه به وب‌سایت‌های کدال و شرکت مدیریت فناوری بورس تهران تهیه و جامعه آماری آن کلیه شرکت­های حاضر در بازار بورس اوراق بهادار تهران در سال 1398 بودند. قلمرو زمانی پژوهش یک هفته قبل و بعد از اعلام انتشار ویروس کووید 19 در جهان و یک هفته قبل و بعدازاین انتشار خبر در ایران بوده است. نمونه‌برداری به‌صورت سیستماتیک انجام و حجم نمونه برای دو بازه زمانی به ترتیب 407 و 375 شرکت در نظر گرفته شد. تجزیه‌وتحلیل داده‌ها با آزمونی میانگین انجام شد. یافته­‌ها نشان داد که اعلام خبر انتشار ویروس کووید 19 در جهان و ایران بازدهی غیر­عادی در بین شرکت­‌های حجم نمونه نداشته است همچنین بین بازدهی شرکت‌های بزرگ و کوچک نیز تفاوت معناداری وجود نداشت

کلیدواژه‌ها

عنوان مقاله [English]

The Information Content of Covid 19 Outbreak Announcement in Tehran Stock Exchange

نویسندگان [English]

  • Mohammad Hossein Safarzadeh 1
  • Ali Amini 2
1 Assistant prof., Department of Accounting, Shahid Beheshti University, Tehran, Iran
2 MSc in Accounting Shahid Beheshti University, Tehran, Iran.
چکیده [English]

Investing in the stock market undoubtedly is a vital part of the economy of the whole country, and the national economy is heavily influenced by stock market performance. Therefore, it is very important to study and identify the factors affecting stock returns for managers and investors. This study was conducted aimed to examine the information content of announcing the news on the coronavirus disease (COVID-19) outbreak in the Tehran's stock market. This study is considered as an applied research in terms of purpose and event study in terms of nature. In this study, the data was collected through the CODAL and TSETMC websites and the statistical sample includes all companies listed in the Tehran Stock Exchange in 2019. Temporal scope of the research was a week before and after the announcement of the coronavirus disease (COVID-19) outbreak in the world and a week before and after announcing the news on the coronavirus disease (COVID-19) outbreak in Iran. Sampling was done systematically and the sample size for two time periods was considered 407 and 375 companies, respectively. Data were analyzed by Means-test. According to the results, the announcing the news on the coronavirus disease (COVID-19) outbreak in the world and Iran did not have abnormal returns among sample companies, nor was there a significant difference between the returns of large and small companies.

کلیدواژه‌ها [English]

  • Covid 19 disease
  • Tehran stock market
  • information content

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چشم انداز مدیریت مالی
دوره 12، شماره 40
دی 1401
صفحه 119-143

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