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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">inform</journal-id><journal-title-group><journal-title xml:lang="ru">Информатика</journal-title><trans-title-group xml:lang="en"><trans-title>Informatics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1816-0301</issn><issn pub-type="epub">2617-6963</issn><publisher><publisher-name>UIIP NASB</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.37661/1816-0301-2024-21-2-24-35</article-id><article-id custom-type="elpub" pub-id-type="custom">inform-1280</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>МАТЕМАТИЧЕСКОЕ МОДЕЛИРОВАНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MATHEMATICAL MODELING</subject></subj-group></article-categories><title-group><article-title>Применение моделей копул в анализе акций фондового рынка</article-title><trans-title-group xml:lang="en"><trans-title>Application of Copula Models in Stock Market Analysis</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0001-0779-9156</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кендысь</surname><given-names>А. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Kendys</surname><given-names>A. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кендысь Алексей Максимович, студент факультета прикладной математики и информатики</p><p>пр. Независимости, 4, Минск, 220030</p></bio><bio xml:lang="en"><p>Alexey M. Kendys, Student of the Faculty of Applied Mathematics and Computer Science</p><p>av. Nezavisimosti, 4, Minsk, 220030</p></bio><email xlink:type="simple">kendyslesha@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1473-0894</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Труш</surname><given-names>Н. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Troush</surname><given-names>M. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Труш Николай Николаевич, доктор физико-математических наук, профессор; профессор кафедры теории вероятностей и математической статистики факультета прикладной математики и информатики</p><p>пр. Независимости, 4, Минск, 220030</p></bio><bio xml:lang="en"><p>Mikolai M. Troush, D. Sc. (Phys.-Math.), Prof.; Prof. at the Department of Probability Theory and Mathematical Statistics, Faculty of Applied Mathematics and Computer Science</p><p>av. Nezavisimosti, 4, Minsk, 220030</p></bio><email xlink:type="simple">troushnn@bsu.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Белорусский государственный университет</institution></aff><aff xml:lang="en"><institution>Belarusian State University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>28</day><month>06</month><year>2024</year></pub-date><volume>21</volume><issue>2</issue><fpage>24</fpage><lpage>35</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Кендысь А.М., Труш Н.Н., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Кендысь А.М., Труш Н.Н.</copyright-holder><copyright-holder xml:lang="en">Kendys A.M., Troush M.M.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://inf.grid.by/jour/article/view/1280">https://inf.grid.by/jour/article/view/1280</self-uri><abstract><sec><title>Цели</title><p>Цели. Целью исследования является применение моделей копул для анализа акций российского фондового рынка и описания изменения зависимости между акциями до и во время коронавирусной инфекции (COVID-19).</p></sec><sec><title>Методы</title><p>Методы. Приводится алгоритм использования копул и функций языка программирования R при его реализации. Для описания динамики финансовых рядов используется модель ARMA-GJR-GARCH (ARMA-Glosten-Jagannathan-Runkle-GARCH, модель авторегрессии – скользящего среднего Глостен – Джаганнатан – Ранкл с обобщенной авторегрессионной условной гетероскедастичностью). Осуществляется подбор оптимальных семейств и параметров моделей копул. Проверяется адекватность полученных моделей и анализируются результаты исследования взаимосвязи между данными рядами.</p></sec><sec><title>Результаты</title><p>Результаты. Разработан алгоритм для относительно нового подхода использования копул в связке с моделью ARMA-GJR-GARCH. Подход применен для исследования влияния коронавируса в контексте российской экономики. Выявлено, что в период COVID-19 зависимость между различными акциями фондового рынка возрастает. Показано, что эффект волатильности финансовых рядов увеличивается после вспышки пандемии.</p></sec><sec><title>Заключение</title><p>Заключение. Алгоритм исследования с помощью моделей копул в связке с моделью ARMA-GJR-GARCH показал свою целесообразность. Данный подход можно использовать и с применением других моделей GARCH-типа для исследования финансов и других сфер.</p></sec></abstract><trans-abstract xml:lang="en"><p>Objectives. The objective of the study is to use copula models to analyze shares of the Russian stock market and describe changes in the relationship between the shares before and during the coronavirus infection (COVID-19).Methods. An algorithm for using copulas and functions of the R programming language in its implementation is presented. To model the dynamics of financial series the ARMA-GJR-GARCH process (autoregressive moving average Glosten-Jagannathan-Runkle model with generalized autoregressive conditional heteroskedasticity) is used. The selection of optimal families and parameters of copula models is carried out. The adequacy of the obtained models is checked and the results of the study of the relationship between the series are analyzed.Results. An algorithm has been developed for a relatively new approach to using copulas in conjunction with the ARMA-GJR-GARCH model. The approach was used to study the impact of coronavirus in the context of the Russian economy. It is revealed that during the COVID-19 period the dependence between different stocks increases. It is shown that the effect of volatility in financial series increases after the outbreak of the pandemic.Conclusion. The research algorithm using copula models in conjunction with the ARMA-GJR-GARCH process has shown its feasibility. This approach can be used with other GARCH-type models to study finance and other areas.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>копула</kwd><kwd>модель ARMA-GJR-GARCH</kwd><kwd>фондовый рынок</kwd><kwd>акции</kwd><kwd>коронавирусная инфекция</kwd><kwd>математическое моделирование</kwd></kwd-group><kwd-group xml:lang="en"><kwd>copula</kwd><kwd>ARMA-GJR-GARCH</kwd><kwd>stock market</kwd><kwd>shares</kwd><kwd>coronavirus infection</kwd><kwd>mathematical modelling</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Cherubini, U. Copula Methods in Finance / U. Cherubini, E. Luciano, W. Vecchiato. – England : John Wiley &amp; Sons, 2004. – 293 p. https://doi.org/10.1002/9781118673331</mixed-citation><mixed-citation xml:lang="en">Cherubini U., Luciano E., Vecchiato W. Copula Methods in Finance. 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