In 1990, the French bank, BNP, issued exchangeable bonds denominated in French
francs (FF). These are bonds issued for FF 100 on April 1, 1990, with an annual coupon
of FF 5, plus an exchange right. The bonds can be redeemed for FF 100 on April 1,
1996. The right can be exchanged on
April 1, 1991, with payment of an additional FF 100, for another bond identical to the
old bond (annual coupon of FF 5 and redeemed for FF 100 on April 1, 1996). If you
exercise your right, you will have paid an additional FF 100 on April 1, 1991, but you
will then hold two BNP bonds with maturity in 1996.
a. Under what scenario would you exercise the exchange right (exchange the right plus
FF 100 for an additional bond) on April 1, 1991? What is the attraction of such an
exchangeable bond for investors?
b. On April 1, 1990, the yield curve is flat at 6%. You can buy a call on a five-year bond
with a coupon of 5%. The call has a strike price of 100% and expires on April 1, 1991.
Its premium is 2%. Construct a replication portfolio to determine at what price the
exchangeable bond can be issued by BNP.
You consider investing in an emerging market. Its stock market volatility (standard
deviation of returns measured in U.S. dollars) is 25%. The volatility of the World index
of developed markets is 15%. The correlation between the emerging market and the
World index is 0.2.
a. What would be the volatility of a portfolio invested 95% in the World index and 5%
in this emerging market?
b. Compare the result found in the previous question with the volatility of the World
index and give an intuitive explanation.