(Figure: Predicting Demand Shifts 2) What would cause a shift from D1 to D2? 
Definitions:
Futures Contracts
Standardized legal agreements to buy or sell something at a predetermined future date and price, often used for hedging or speculation purposes.
Highly Marketable Securities
Securities that can be easily sold or converted into cash quickly without a significant loss in value.
Treasury Bills
Short-term government securities with maturities of one year or less, sold at a discount from their face value.
Warehouse Receipts
Documents that provide proof of ownership of commodities that are stored in a warehouse for protection and future sale.
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