Retorno esperado é um conceito fundamental em finance and investing, representing the anticipated return on an investment or asset over a certain period. It is calculated as the weighted average of all possible returns, where the weights correspond to the probabilities of each outcome occurring. This metric helps investors make informed decisions by providing a snapshot of potential gains or losses based on historical data and market conditions.
Para calcular o retorno esperado, geralmente utiliza-se a seguinte fórmula:
Retorno Esperado (E[R]) = Σ (Probabilidade de Resultado * Retorno do Resultado)
In this equation, each possible return from an investment is multiplied by the probability of that return occurring, and then all these products are summed. The expected return can be positive, negative, or zero, depending on the investment’s risk profile and market dynamics.
O retorno esperado é particularmente importante em gerenciamento de portfólio and asset allocation, as it allows investors to gauge the risk-return trade-off of various investments. However, while it provides valuable insights, it is essential to remember that expected return is not a guarantee of future performance; actual returns can be influenced by numerous unforeseen factors, including market volatility, economic changes, and company performance.