Financial studies examining stock price behavior have principally relied on end-of-day data. This paper illustrates a bias in closing prices by reexamining the when-issue pricing anomaly with intraday data. With intraday data, major portions of the pricing anomaly can be explained by: a nonsynchronous matching of trades; a difference in the settlement procedures (labeled time value of money in Choi and Strong (1983)); a mismatching of market purchases with market sales (first proposed by Lamoureux and Wansley (1989)); and a higher frequency of market purchases relative to market sales. In addition, the small remaining portion of the anomaly cannot be arbitraged. The remaining premium is attributed to a lower level of limit order competition and an order imbalance in the when-issued shares.

James M. Miller, John J. McConnell, Open-Market Share Repurchase Programs and Bid-Ask Spreads on the NYSE: Implications for Corporate Payout Policy, The Journal of Financial and Quantitative Analysis, Vol. 30, No. 3 (Sep., 1995), pp. 365-382

Offshore dollar-denominated equity-linked issues were a more important source of funds for Japanese companies during the 1980s than domestic equity and straight debt issues combined. Using a sample of Japanese equity-linked offshore issues from 1977 to 1989, we find that the announcement of these issues is accompanied by a significant positive abnormal return. This contrasts with evidence that U.S. equity-linked issues have a significant negative stock price reaction. We provide an explanation for the difference in stock price reactions between U.S. and Japanese issues that is based on the greater influence on managers' security issue decisions of long-term investors and banks in Japan than in the U.S.