The current value of the index is 585. Three-month futures on the index are trading at 600. The continuous dividend yield on the index is d= 3% and the continuously compounded riskless rate is also 3%.
a)
Futures Price = Spot * e(risk free rate - dividend yield) * Time to expiry
Futures Price = 585 * e(3% -3%) * (3/12)
Futures Price = 585
b)
To advantage of this arbitrage opportunity
At time t = 0
Take a short position (Sell) the Futures contract at 600
Borrow 585 at the risk free rate =3%
Take a long position on the Index
At time t = 3 months
The borrowed amount at maturity = 585 * e3% * (3/12) = 589.40
Deliver the index in the Futures contract and receive 600 to close the contract
Arbitrage profit = Futures price - Borrowed Amount
Arbitrage profit = 600 - 589.40
Arbitrage profit = 10.60
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