Optimização de portfólios de investimento com custos de transação usando um algoritmo genético multiobjetivo: caso aplicado à Bolsa de Valores da Colômbia
DOI:
https://doi.org/10.18046/j.estger.2018.146.2812Palavras-chave:
Algoritmos genéticos, Optimização de portfólios, Modelo de variância media, Custos de transação, Optimização multiobejtivoResumo
Este artigo aborda a optimização de portfólios levando em consideração as restrições impostas pelos mercados financeiros e as condições de projetos com excesso de liquidez, como custos de transação, orçamento limitado e horizontes curtos de tempo. Dadas essas condições, verificou-se que os modelos convencionais podem gerar carteiras ineficientes. Portanto, formula-se um modelo matemático e implementase um algoritmo genético multiobjetivo para encontrar portfólios eficientes na Bolsa de Valores da Colômbia, minimizando o risco e maximizando a lucratividade. Além disso, apresentam-se resultados que permitem comparar os portfólios obtidos com o modelo proposto e o modelo de variância media, mostrando a importância dos custos de transação e do orçamento na tomada de decisões de investimento.
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