Quinta-feira, Janeiro 11, 2007

Diversificação em Bolsa de Valores

Um dos tópicos importantes para investimentos em Bolsa de Valores é o que trata da escolha das ações que serão objeto de constituição de uma carteira. É a composição da carteira que pode contribuir decisivamente sobre o risco por investir em um mercado de renda variável. A diversificação deve ser encarada como uma ferramenta que possibilita ao investidor minimizar perdas quando da ocorrência de um evento que venha a afetar as cotações. Assim, o investidor deve escolher ações para investir em segmentos que venham a reagir de forma diferente frente a um mesmo fato. Ou seja, para um fato registrado, alguns setores da economia se comportam de forma diferente de outros.
Vamos tentar identificar melhor esta colocação. A eclosão de uma guerra em área de grande produção de petróleo pode ter influência sobre ações de empresas distribuidoras de combustíveis, pois a guerra pode diminuir a produção mundial, os preços no mercado internacional, conseqüentemente, poderão subir, fazendo pressão sobre o consumo e diminuindo os lucros das empresas. Como decorrência, as ações de empresas atuando neste segmento de mercado deverão receber impacto negativo.
Por outro lado, empresas produtoras de armamento poderão sair beneficiadas, pois serão requisitadas a vender mais, logo, aumentar a produção, aumentar seus lucros e verem suas ações subir na Bolsa de Valores.
Este mecanismo deve ser bem observado, acompanhando os fatos ocorrendo no dia-a-dia e o evoluir dos mercados.



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