دانش سرمایه‌گذاری

دانش سرمایه‌گذاری

پیش‌بینی احتمال وقوع بازده‌های حدی توسط نوسانات و عوامل ریسک با استفاده ازمدل های رگرسیون لجستیک و شبکه عصبی

نوع مقاله : مقاله پژوهشی

نویسندگان
1 گروه مدیریت مالی، واحد تهران جنوب ،دانشگاه آزاد اسلامی ، تهران، ایران.
2 گروه اقتصاد، واحد تهران مرکز، دانشگا ه آزاد اسلامی ، تهران، ایران.
3 گرو ه حسابداری، واحد تهران جنوب، دانشگاه آزاد اسلامی, تهران، ایران
4 گرو ه حسابداری، واحد تهران جنوب، دانشگاه آزاد اسلامی، تهران، ایران.
5 گروه حسابداری، واحد تهران جنوب، دانشگاه آزاد اسلامی، تهران، ایران.
10.30495/jik.2025.23610
چکیده
امروزه با توجه به رقابت شدید بین شرکت‌ها و سایر عوامل اقتصادی و سیاسی بازده‌ها نوسانات بالایی را تجربه می‌کنند. این مطالعه رابطه بین نوسان و دیگر عوامل ریسک را با احتمال وقوع بازده‌های حدی مورد انتظار بررسی نموده است. هدف این پژوهش شناسایی عوامل تأثیرگذار بر روی بازده‌های حدی و افزایش بازده سرمایه‌گذاری است. در این پژوهش نوسان منحصر بفرد ، نوسان شرطی و معیار ریزش مورد انتظار مورد بررسی قرار می گیرد. نوسان شرطی با استفاده از مدل EGARCH، نوسان منحصر بفرد بر اساس مدل پنج عاملی فاما و فرنچ و ریزش مورد انتظار نیز بر اساس توزیع تعمیم ‌یافته پارتو محاسبه شده است. داده‌های مربوط به پژوهش شامل دوره زمانی01 /1382 تا 07/ 1397 می‌باشند. این پژوهش بر اساس مدل رگرسیون لاجیت و پروبیت و شبکه عصبی صورت پذیرفته است. نتایج مطالعه، رابطه مثبت بین سه معیار نوسان عامل ریسک و احتمال وقوع بازده حدی را نشان می دهند. سایر ویژگی‌ها ، شامل عامل سرمایه گذاری و سود آوری از متغیر های فاما و فرنچ و عوامل ارزش شرکت، نوسان قیمت سهم و نفت و دلار رابطه معنی‌داری بااحتمال وقوع بازده های حدی داشتند، اما بین متغیر عمر شرکت و بازده‌های حدی رابطه معنی‌داری یافت نشد. عملکرد سه روش رگرسیون لاجیت و پروبیت و شبکه عصبی در پیش‌بینی بازده‌های حدی مقایسه گردیدند. مدل پروبیت نسبت به دو مدل دیگر عملکرد بهتری دارد.
کلیدواژه‌ها

عنوان مقاله English

Predicting the Probability of Extreme Returns with Volatilities and Risk factors using Logistic regression and Neural Network models

نویسندگان English

Felor Ghorashi 1
Ghodratollah Emamverdi 2
Seyedeh Mahboubeh Jafari 3
Ali Baghani 4
Yadollah NouriFard 5
1 Faculty of financial management, South Tehran Branch, Islamic Azad University, Tehran, Iran
2 Faculty of Economics, Central Tehran Branch, Islamic Azad University, Tehran, Iran.
3 Faculty of Accounting, South Tehran Branch, Islamic Azad University, Tehran, Iran.
4 Faculty of Accounting, South Tehran Branch, Islamic Azad University, Tehran, Iran.
5 Faculty of Accounting, South Tehran Branch, Islamic Azad University, Tehran, Iran.
چکیده English

Today, due to intense competition between companies and other economic and political factors, returns experience high fluctuations. The purpose of this study is to identify the factors affecting such returns and increase return on investment. This study investigated the relationship between volatility and other risk factors with the probability of expected marginal returns. The purpose of this paper is to find the variables that affect the limit efficiencies. In this study, two types of idiosyncratic volatility and expected shortfall are investigated. Conditional volatility Using the EGARCH model, the idiosyncratic volatility is calculated based on the Fama and French five-factor model, and the expected shortfall is also calculated based on the generalized Pareto distribution. Research data include the period from 1382/01 to 1397/07. This study is based on the logit and probit regression model and neural network. The results of the study show a positive relationship between the three criteria of risk factor volatility and the probability of extreme return. Other characteristics, including firm value, stock price volatility and oil and the dollar, had a significant relationship with the probability of extreme returns, but no significant relationship was found between the firm age variable and extreme returns. The performance of logit, probit and neural network regression methods in predicting extreme returns were compared. The Probit model performs better than the other two models.

کلیدواژه‌ها English

Extreme returns
Idiosyncratic volatility
Conditional volatility
Expected shortfall
Logit and probit regression
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