Reading #47: Security Mrk Indices Flashcards
price index
uses only prices of constituent securities in return of calc.
price-weighted index
average of prices of securities in index
advantage of price-weighted index
simple to calculate
disadvantage of price-weighted index
%chnge in higher priced stock has greater impact on index return. Also, stock splits will change weighting of index
example of price-weighted index
Dow Jones Industrial Average (DJIA)
equal weighted index definition
average return on stocks, equally weighted
advantage of equal-weighted index
simple
disadvantage of equal-weighted index
readjusted frequently with price changes so values are made equal each period
market cap-weighted index
weights based on market cap of each index stock as proportion of total mkt cap.
market float
total value of shares that actually available to investment public - controlling stockholder shares
float-adj. mkt cap weight index
same as mkt cap-weighted but in proportion to shares avail. to investors
ex. of mkt cap-weighted index
S&P500
free float
market float that excludes shares not avail. to foreign buyers
price-weighted index calculation
sum of stock prices/# of stocks in index adjusted for splits
mkt cap-weighted calculation
(curr. total MV/base yr total MV)xBase year index value