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In finance, an abnormal return is the difference between the actual return of a security and the expected return.Abnormal returns are sometimes triggered by "events." Events can include mergers, dividend announcements, company earning announcements, interest rate increases, lawsuits, etc. all of which can contribute to an abnormal return.
Methodologically, event studies imply the following: Based on an estimation window prior to the analyzed event, the method estimates what the normal stock returns of the affected firm(s) should be at the day of the event and several days prior and after the event (i.e., during the event window).
r it is return to stock i in period t r f is the risk free rate (i.e. the interest rate on treasury bills) r mt is the return to the market portfolio in period t is the stock's alpha, or abnormal return is the stock's beta, or responsiveness to the market return
In finance, Jensen's alpha [1] (or Jensen's Performance Index, ex-post alpha) is used to determine the abnormal return of a security or portfolio of securities over the theoretical expected return. It is a version of the standard alpha based on a theoretical performance instead of a market index .
For firms that report good news in quarterly earnings, their abnormal security returns tend to drift upwards for at least 60 days following their earnings announcement. Similarly, firms that report bad news in earnings tend to have their abnormal security returns drift downwards for a similar period. This phenomenon is called post-announcement ...
The clean surplus accounting method provides elements of a forecasting model that yields price as a function of earnings, expected returns, and change in book value. [1] [2] [3] The theory's primary use is to estimate the value of a company's shares (instead of discounted dividend/cash flow approaches).
MacRumors has a corresponding YouTube channel hosted by video producer Dan Barbera that provides content related to the website's coverage, including noteworthy Apple rumors, new product launches, reviews, tutorials, and more. [16] As of August 2023, the MacRumors YouTube channel has over half a million subscribers and 152 million video views. [17]
During an interview with Morning Star, Kroijer said that too many sole investors were trying to beat the market, when in reality all they were after was a good return on their investment. While speaking with Morning Star, he also studied the costs of an active fund compared to a passive fund for someone using the fund to save for a pension. [ 14 ]