Harvard Business Case:
January 19, 1995
The Keller Fund's Option Investment Strategies
Problem 1. If you owned Lotus's stock, but were concerned about the possibility of bad news, how might you use options to protect yourself against the risk of a price decline?
Problem 2. Suppose on January 18, 1994, the daily yield to maturity of T-bills is 0.0078%. The call option with X=55 for Lotus's common stock maturing in February 19, 1994 is $2.875 per share, while the put option on Lotus' stock with the same maturity and exercise price is $2.625 per share. Do the quoted put and call option prices appear to be consistent with the put-call parity relationship? If not, how will you make a riskless arbitrage profit? What might explain such apparent violations, other than simple mispricing?