When information is costly, a seller may wish to prevent prospective buyers from acquiring information, for the cost of information acquisition ultimately is borne by the seller. A seller can achieve the desired prevention through posted-price selling, by offering prospective buyers a discount. No such prevention is possible in the case of an auction. We establish the result that the seller prefers posted-price selling when the cost of information acquisition is high and auctions when it is low. We view corporate bonds as an instance of the former case, and government bonds as an instance of the latter.

We present an information-based explanation for spinoffs. When the various divisions of a firm are spun off into several firms that have separate stock market listings, the number of traded securities increases. This makes the price system more informative. It improves the quality of the investment decisions made by managers and reduces uninformed investors' uncertainty about the value of the divisions. Both effects serve to increase the sum total of the market values of the spun-off divisions above the market value of the original firm.Journal of Economic LiteratureClassification Numbers: G14, G34.