Fight Finance

(a) The risk free rate has zero systematic risk and zero idiosyncratic risk.

(b) The market portfolio has zero idiosyncratic risk.

(c) The market portfolio has zero systematic risk.

(d) a and b are true.

(e) a and c are true.

(a) 246,567.70,   93,351.63

(b) 246,567.70,   235,741.91

(c) 248,563.73,   96,346.75

(d) 248,563.73,   238,323.24

(e) 256,580.38,   245,314.97

(a) 107,441

(b) 98,393

(c) 90,480

(d) 80,000

(e) 64,039

(a) Dividends.

(b) Rent.

(c) Coupons.

(d) Loan payments.

(e) Capital gains.

(a) 0.6

(b) 0.319508

(c) 0.269705

(d) 0.245731

(e) 0.219755

(a) 77.6034%

(b) 30.3779%

(c) 28.8603%

(d) 22.3966%

(e) 7.5304%

(a) All people would appear rational to an economist since they prefer more wealth to less.

(b) Mrs Green and Miss Red would appear unusual to an economist since they are not risk averse.

(c) Mr Blue's certainty equivalent of the gamble is $64. This is less than his current wealth of $256 which is why he would refuse the gamble.

(d) Miss Red's certainty equivalent of the gamble is $256. This is the same as her current wealth of $256 which is why she would be indifferent to playing or not.

(e) Mrs Green's certainty equivalent of the gamble is $512. This is more than her current wealth of $256 which is why she would love to play.

(a) The geometric average of the gross discrete returns (GAGDR) equals 1.04075 which is 104.075%.

(b) ##\exp \left( \text{GAGDR} \right) = \text{AALGDR}##. The natural exponent of the GAGDR equals the arithmetic average of the logarithms of the gross discrete returns (AALGDR).

(c) ##\text{GAGDR}^T = \left( P_T/P_0 \right)##. The GAGDR raised to the power of the number of time period that it's measured over equals the ratio of the first and last prices.

(d) ##\text{GAGDR} = \exp \left( \text{AALGDR} \right)##. This is always true, regardless of the distribution of the prices or returns. The logarithm of the geometric average of the gross discrete returns (LGAGDR) is always equal to the arithmetic average of the logarithm of the gross discrete returns (AALGDR).

(e) ##\text{AAGDR} \approx \exp \left( \text{AALGDR} + \text{SDLGDR}^2/2 \right)##. This is only approximately true and depends on the distribution of the prices and returns. It's asymptotically true as the time period that the returns are measured over reaches infinity.

(a) $40 tonight and $38 tomorrow.

(b) $41.2 tonight and $39.2 tomorrow.

(c) $41.2 tonight and $43.2 tomorrow.

(d) $43.2 tonight and $41.2 tomorrow.

(e) $45.2 tonight and $43.2 tomorrow.

(a) Have Sharpe ratios equal to the market’s.

(b) Have Treynor ratios equal to the market's.

(c) Have Jensen’s alphas that are zero.

(d) Not necessarily be bought or sold since there's no gain either way.

(e) Plot on the Security Market Line (SML).