Subthalamotomy is a type of brain surgery in which the subthalamic nucleus is destroyed in attempt to help alleviate movement disorders often associated with Parkinsonâs disease. This surgery has been most widely researched at Havana âs International Center for Neurological Restoration (CIREN) located in Cuba.
Alpha is one of five technical risk ratios; the others are beta, standard deviation, R-squared, and the Sharpe ratio. These are all statistical measurements used in modern portfolio theory (MPT) . All of these indicators are intended to help investors determine the risk-return profile of a mutual fund.ne such consideration is that alpha is used in the analysis of a wide variety of fund and portfolio types. Because the same term can apply to investments of such differing natures, there is a tendency for people to attempt to use alpha values to compare different kinds funds or portfolios with one another.
Some refer to the alpha as the difference between the investment return and the benchmark return. However, this does not properly adjust for risk. More appropriately, an alpha is generated by regressing the security or mutual fund's excess return on the benchmark (for example S&P 500) excess return. The beta adjusts for the risk (the slope coefficient). The alpha is the intercept.