Beginning with the first stock, create equally-weighted portfolios by successively including one additional stock, that is, the first portfolio consists of only Stock 1, the second contains Stock 1 and Stock 2, the third - Stock 1, Stock 2, and Stock 3, and so on. You will have ten portfolios in total. For each portfolio, calculate monthly returns, average monthly return, and the standard deviation of monthly returns. Now make a plot of portfolio standard deviation of return vs. number of stocks in the portfolio. What can you say about the relationship between portfolio risk and the number of stocks in the portfolio? What do you think is responsible for this relationship?
| Company Name |
Ticker Symbol |
| KB Home |
KBH |
| Biogen Idec |
BIIB |
| Symantec Corp |
SYMC |
| ConAgra Foods |
CAG |
| Chevron Corporation |
CVX |
| Hormel Foods |
HRL |
| Petroleum & Resources Inc |
PEO |
| Charles Schwab |
SCHW |
| Wal-Mart Stores |
WMT |
| Bristol Myers Squibb Co |
BMY |