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For example, if a stock fund returned 12 percent and the S&P 500 returned 10 percent, the alpha would be 2 percent. But alpha should really be used to measure return in excess of what would be ...
In 2014, the Review of Financial Studies published Wisdom of Crowds: The Value of Stock Opinions Transmitted Through Social Media.Researchers from City University of Hong Kong, Purdue University and Georgia Institute of Technology analyzed approximately 100,000 Seeking Alpha articles and commentary published between 2005 and 2012.
The average investor may not be familiar with what beta means, but they are no doubt fully aware of what it represents. Although there are different types of risk in the market, a stock's beta...
Beta is the hedge ratio of an investment with respect to the stock market. For example, to hedge out the market-risk of a stock with a market beta of 2.0, an investor would short $2,000 in the stock market for every $1,000 invested in the stock. Thus insured, movements of the overall stock market no longer influence the combined position on ...
These equations show that the stock return is influenced by the market (beta), has a firm specific expected value (alpha) and firm-specific unexpected component (residual). Each stock's performance is in relation to the performance of a market index (such as the All Ordinaries). Security analysts often use the SIM for such functions as ...
As a result, the stock was down 8.9% as of 10:20 a.m. ET. A satellite flying through space. Image source: Getty Images. Sirius' growth is still a problem.
Jensen's alpha is a statistic that is commonly used in empirical finance to assess the marginal return associated with unit exposure to a given strategy. Generalizing the above definition to the multifactor setting, Jensen's alpha is a measure of the marginal return associated with an additional strategy that is not explained by existing factors.
Alpha is a measure of the active return on an investment, the performance of that investment compared with 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; a negative alpha means the investment underperformed the market.