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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">emjume</journal-id><journal-title-group><journal-title xml:lang="ru">Экономика и управление</journal-title><trans-title-group xml:lang="en"><trans-title>Economics and Management</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1998-1627</issn><issn pub-type="epub">3033-7984</issn><publisher><publisher-name>СПбУТУиЭ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.35854/1998-1627-2025-3-322-332</article-id><article-id custom-type="elpub" pub-id-type="custom">emjume-2440</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>ФИНАНСОВО-КРЕДИТНАЯ СФЕРА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>FINANCES AND CREDIT</subject></subj-group></article-categories><title-group><article-title>Управление портфелем акций российских компаний при изменении ключевой ставки Банка России</article-title><trans-title-group xml:lang="en"><trans-title>Portfolio management of Russian companies’ stocks in case of changes in the key rate of the Bank of Russia</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Плачинда</surname><given-names>К. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Plachinda</surname><given-names>K. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Константин Дмитриевич Плачинда, эксперт</p><p>отдел управления процентным риском банковской книги</p><p>107045; Луков пер., д. 2, стр. 1; Москва</p></bio><bio xml:lang="en"><p>Konstantin D. Plachinda, expert</p><p>Banking Book Interest Rate Risk Management Department</p><p>107045; 2 Lukov per., bldg. 1; Moscow</p></bio><email xlink:type="simple">plachinda.kd@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">ПАО «Московский Кредитный Банк»<country>Россия</country></aff><aff xml:lang="en">PJSC “Credit Bank of Moscow”<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>24</day><month>04</month><year>2025</year></pub-date><volume>31</volume><issue>3</issue><fpage>322</fpage><lpage>332</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Плачинда К.Д., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Плачинда К.Д.</copyright-holder><copyright-holder xml:lang="en">Plachinda K.D.</copyright-holder><license 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://emjume.elpub.ru/jour/article/view/2440">https://emjume.elpub.ru/jour/article/view/2440</self-uri><abstract><sec><title>   Цель</title><p>   Цель. Оценка влияния изменения ключевой ставки Банка России на фондовый рынок России для разработки эффективной стратегии управления портфелем акций российских компаний.</p></sec><sec><title>   Задачи</title><p>   Задачи. Построить модель машинного обучения, позволяющую прогнозировать краткосрочную динамику стоимости индексов при изменении ключевой ставки; определить оптимальную структуру инвестиционного портфеля с учетом полученных результатов; сформулировать основы стратегии по управлению портфелем акций в условиях волатильности ключевой ставки.</p></sec><sec><title>   Методология</title><p>   Методология. В исследовании применены методы корреляционного и регрессионного анализа, градиентный бустинг (XGBoost), SHAP-анализ для интерпретации результатов моделей машинного обучения и оценки направления зависимостей, а также метод оценки импульсного отклика котировок индексов на изменение ключевой ставки.</p></sec><sec><title>   Результаты</title><p>   Результаты. Выявлены статистически значимые эффекты влияния изменения ключевой ставки на котировки отраслевых индексов МосБиржи в краткосрочном периоде (один-три дня). Построенные модели градиентного бустинга демонстрируют высокую предсказательную способность для большинства проанализированных индексов. Разработана методика формирования оптимального портфеля акций с учетом прогнозируемого изменения ключевой ставки.</p></sec><sec><title>   Выводы</title><p>   Выводы. Установлено, что реакция акций на изменение ключевой ставки существенно различается в зависимости от сектора экономики. Наибольшую чувствительность демонстрируют акции компаний финансового сектора и компаний сектора электроэнергетики. Наименее подвержены влиянию изменения ставки телекоммуникационные компании и компании, бизнес которых связан с химией и нефтехимией. Полученные результаты позволяют формировать инвестиционные портфели с учетом ожидаемых изменений монетарной политики Банка России и минимизировать риски при колебаниях ключевой ставки.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>   Aim</title><p>   Aim. The work aimed to assess the impact of changes in the key rate of the Bank of Russia on the Russian stock market to develop an effective strategy for managing a portfolio of Russian companies’ stocks.</p></sec><sec><title>   Objectives</title><p>   Objectives. The work seeks to create a machine learning model that can predict short-term dynamics of index values in case of changes in the key rate; determine the optimal structure of the investment portfolio taking into account the results obtained; formulate the basics of a strategy for managing a portfolio of stocks under conditions of key rate volatility.</p></sec><sec><title>   Methods</title><p>   Methods. The study employed correlation and regression analysis, gradient boosting (XGBoost), SHAP analysis to interpret the results of machine learning models and assess the direction of dependencies, as well as a method for assessing the impulse response of index quotes to changes in the key rate.</p></sec><sec><title>   Results</title><p>   Results. The work revealed statistically significant effects of the impact of changes in the key rate on quotes of industry indices of the Moscow Exchange in the short term (one to three days). The gradient boosting models constructed demonstrate high predictive ability for most of the indices analyzed. A method for forming an optimal stock portfolio taking into account the predicted change in the key rate was developed.</p></sec><sec><title>   Conclusions</title><p>   Conclusions. The work established that the reaction of stocks to changes in the key rate varies significantly depending on the economy sector. The greatest sensitivity is demonstrated by stocks of companies in the financial sector and companies in the electric power industry, while telecommunication companies and chemistry and petrochemistry-related companies are the least susceptible to the impact of rate changes. The results obtained can be used to form investment portfolios taking into account the expected changes in the monetary policy of the Bank of Russia and minimize risks from the key rate fluctuations.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>ключевая ставка</kwd><kwd>инвестиции</kwd><kwd>фондовый рынок</kwd><kwd>машинное обучение</kwd><kwd>SHAP-анализ</kwd><kwd>импульсный отклик</kwd><kwd>инвестиционный портфель</kwd></kwd-group><kwd-group xml:lang="en"><kwd>key rate</kwd><kwd>investments</kwd><kwd>stock market</kwd><kwd>machine learning</kwd><kwd>SHAP analysis</kwd><kwd>impulse response</kwd><kwd>investment portfolio</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">Ключевая ставка Банка России // Банк России. 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