Contemporary Corporate Finance
Monday, December 6th, 2010Portfolio Theory
“is a theory of investment which attempts to maximize portfolio expected return for a given amount of portfolio risk, or equivalently minimize risk for a given level of expected return, by carefully choosing the proportions of various assets” (wikipedia)
Calculating holding -period returns
Before investing in shares, investors usually have a careful look at financial statements. In order to know how much return will be for a single share invested, we have formulas as follows:
If the investor hold shares for 1 year, Return will be:

R = (D1 + P1 – P0) / P0
where :
R is percentage of return
D1 is dividend received
P0 is share price at the time bought
P1 is share price after 1 year period bought
Ex: A share was bought for £2, dividend after one year is 10p, share is sold for £2.20.
R=(0.10+2.20-2)/2= 0.15 or 15%.


