A manager wants to hedge a S$1,700,000 portfolio (beta 0.9 to the STI) using STI futures priced at 2,500 points with a S$10 multiplier. The correct number of contracts to short is:
Price coverage per contract = 2,500 x S$10 = S$25,000. Hedge ratio = (S$1,700,000 / S$25,000) x 0.9 = 68 x 0.9 = 61.2. Contracts are indivisible and rounded UP to ensure full coverage, so he sells 62.
Option A (61) rounds 61.2 down; a partial contract cannot be sold, so the figure is rounded up to 62 to avoid leaving the position under-hedged.
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