A portfolio has three stocks long dash 210 shares of Yahoo (YHOO), 100 shares of General Motors (GM), and 30 shares of Standard and Poor's Index Fund (SPY). If the price of YHOO is $30, the price of GM is $30, and the price of SPY is $130, calculate the portfolio weight of YHOO and GM

47.72%; 22.72%

Explanation:

For Yahoo (YHOO),

Worth of  shares:

= Price × Number of shares

= $30 × 210

= $6,300

For General Motors (GM),

Worth of  shares:

= Price × Number of shares

= $30 × 100

= $3,000

For Standard and Poor's Index Fund (SPY),

Worth of shares:

= Price × Number of shares

= $130 × 30

= $3,900

Total worth of shares:

= YHOO + GM + SPY

= $6,300 + $3,000 + $3,900

= $13,200

Portfolio weight of  YHOO:

= Worth of shares ÷ Total worth of shares

= $6,300 ÷ $13,200

= 0.4772 or 47.72%

Portfolio weight of GM:

= Worth of shares ÷ Total worth of shares

= $3,000 ÷ $13,200

= 0.2272 or 22.72%

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