Arbitrage pricing cannot be applied to commodity futures because the physicalcommodity does not represent a pure asset: Since consumption and processing of thecommodity can drive down inventories to zero, it is not always possible to construct areplicating portfolio for the futures contract, and...

Current discussions about public and private pension plans often include a statement that thestock market is less risky in the long run than in the short run. Pension plans with their ratherlong planning horizon are therefore asked to increase their allocation to the stock market.These...