Green bowel movements are very common and usually no cause for concern. People generally expect their stools to be a consistent brownish color, but it doesnât take much to cause that to change. Any change in stool color can be very alarming, but the cause is almost always benign.
Alpha is a measure of the active return on an investment, the performance of that investment compared to a suitable market index. An alpha of 1% means the investment's return on investment over a selected period of time was 1% better than the market during that same period, an alpha of -1 means the investment underperformed the market. Alpha is one of the five key measures in modern portfolio theory: alpha, beta, standard deviation, R-squared and the Sharpe ratio.
The beta of two assets put together is aweighted average of the individual asset betas, with the weights based upon market value.Consequently, the beta for a firm is a weighted average of the betas of all of differentbusinesses it is in. Thus, the bottom-up beta for a firm, asset or project can be estimatedas follows.he weights remainthe same for all companies, and are not a function of the precision of the beta estimate. asset occurred at 2.30 pm and the index is measured at the close of trading at 4.00 pm, the measuredcorrelation between the asset and the index will be biased downwards.