If buying forward and borrowing to buy and store both deliver the asset at T for nothing today, what must the forward price be?
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Notation , and
Define the spot, forward and futures prices, record that forward and futures prices are treated as approximately equal here, and state what the two dates and in the subscripts mark.
The replication argument and the cost-of-carry formula
Tabulate the date-0 and date- cash flows of buying forward versus borrowing to buy and store the asset, and derive and its present-value form.
Net storage costs and the convenience yield
Define net storage costs as storage costs minus the convenience yield, then compute one forward price from a spot price, risk-free rate, horizon and storage cost of your choice.
Enforcing the price by arbitrage
Write out every leg of the arbitrage trade when the forward price exceeds the cost of replication, then the reversed trade when it falls below, following both through to settlement at .