If the correlation between two stocks is +1, then a portfolio combining these two stocks will have a variance that is:
A)less than the weighted average of the two individual variances.
B)greater than the weighted average of the two individual variances.
C)equal to the weighted average of the two individual variances.
D)less than or equal to average variance of the two weighted variances, depending on other information.
E)None of the above.

Question

Quizplus · Accepted Answer

When two stocks have a correlation of +1, their returns move perfectly in sync, and the portfolio variance is simply the weighted average of the individual variances.

If the Correlation Between Two Stocks Is +1, Then a Portfolio