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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">msuecon</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Московского университета. Серия 6. Экономика</journal-title><trans-title-group xml:lang="en"><trans-title>Lomonosov Economics Journal</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0130-0105</issn><publisher><publisher-name>MSUPRESS</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.55959/MSU0130-0105-6-59-2-4</article-id><article-id custom-type="elpub" pub-id-type="custom">msuecon-992</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>ФИНАНСОВАЯ ЭКОНОМИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>FINANCIAL STUDIES</subject></subj-group></article-categories><title-group><article-title>Новый подход к анализу волатильности и риска в портфельных инвестициях</article-title><trans-title-group xml:lang="en"><trans-title>A new approach to analyzing volatility and risk in portfolio investments</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8417-1971</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Якупов</surname><given-names>Б. Т.</given-names></name><name name-style="western" xml:lang="en"><surname>Yakupov</surname><given-names>B. T.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Якупов Булат Талгатович — аспирант; главный эксперт</p><p>Казань</p><p>Москва</p></bio><bio xml:lang="en"><p>Kazan</p><p>Moscow</p></bio><email xlink:type="simple">bulat.yakupov@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Центр перспективных экономических исследований Академии наук Республики Татарстан; Городское агентство управления инвестициями</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Center of advanced economic research in the Academy of sciences of the Republic of Tatarstan; Moscow City Investment Agency</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>12</day><month>03</month><year>2023</year></pub-date><volume>59</volume><issue>2</issue><fpage>75</fpage><lpage>94</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Якупов Б.Т., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Якупов Б.Т.</copyright-holder><copyright-holder xml:lang="en">Yakupov B.T.</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://msuecon.elpub.ru/jour/article/view/992">https://msuecon.elpub.ru/jour/article/view/992</self-uri><abstract><p>В настоящей статье волатильность как мера риска автором рассматривается в качестве основной проблемы современной портфельной теории. По мнению автора волатильность не является риском в традиционном его понимании. Предлагается введение понятий риск волатильности и риск потери капитала, а также их трактовка с целью разграничения ситуаций в портфельном инвестировании, когда подразумевается риск в виде волатильности (стандартного отклонения) согласно портфельной теории Марковица и когда существует реальная угроза потери капитала инвестором. Цель исследования заключается в пересмотре существующей концепции оценки меры риска в портфельном инвестировании в виде волатильности. Предметом исследования являются экономические отношения, складывающиеся в процессе формирования инвестиционных портфелей и оценки их риска на рынке ценных бумаг. Теоретико-методологической основой исследования выступают концепции и подходы, сформулированные отечественными и зарубежными авторами, занимающимися вопросами формирования и оценки риска портфельных инвестиций, а также историко-логический и экономико-математический анализ волатильности фондового рынка и инвестиционного портфеля с целью доказательства того, что волатильность не является риском потери капитала в традиционном его понимании. Результатом исследования является пересмотр положений современной портфельной теории, заключающейся в рассмотрении волатильности – как основной меры риска в портфельном инвестировании, а также поднятие вопроса о необходимости разработки концептуально иных методов оценки риска на рынке ценных бумаг. Полученные автором результаты, предложенные доказательства несовершенства современной портфельной теории в виде оценки риска посредством волатильности могут быть полезны для дальнейших исследований в области разработки иных подходов к расчету риск-составляющей инвестиционных портфелей на фондовом рынке.</p></abstract><trans-abstract xml:lang="en"><p>In this article volatility as a measure of risk is considered by the author as the main problem of modern portfolio theory and not as a risk in its traditional sense. The author proposes to introduce the concepts of volatility risk and risk of capital loss, as well as their interpretation in order to distinguish the situations in portfolio investment, when the risk in the form of volatility (standard deviation) according to Markowitz portfolio theory is implied and when there is a real threat of capital loss by the investor. The purpose of the study is to revise the existing concept of assessing the measure of risk in portfolio investment in the form of volatility. The subject of the study is the economic relations formed in the process of formation of investment portfolios and assessment of their risk in the securities market. The theoretical and methodological basis of the study are the concepts and approaches formulated by domestic and foreign authors dealing with formation and assessment of risk of portfolio investments, as well as historical-logical and economic-mathematical analysis of stock market volatility and investment portfolio to prove that volatility is not a risk of capital loss in its traditional sense. The result of the study is a revision of the provisions of modern portfolio theory, which consists in considering volatility as the main measure of risk in portfolio investment, as well as raising the issue of the need to develop conceptually different methods of risk assessment in the securities market. The results obtained by the author, the proposed evidence of the imperfection of modern portfolio theory in the form of risk assessment through volatility can be useful for further research in the field of development of other approaches to the calculation of risk component of investment portfolios in the stock market.  </p></trans-abstract><kwd-group xml:lang="ru"><kwd>волатильность</kwd><kwd>риск</kwd><kwd>современная портфельная теория</kwd><kwd>инвестиционный портфель</kwd><kwd>доходность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>volatility</kwd><kwd>risk</kwd><kwd>modern portfolio theory</kwd><kwd>investment portfolio</kwd><kwd>profitability</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">Васильева, М. В., Коростелкин, М. М., &amp; Сороквашина, Ю. С. (2022). Оценка доходности финансовых инструментов: теоретические и практические аспекты. 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