We examine the set of firms that emerged from Chapter 11 bankruptcy and traded on a when-issued basis prior to their official return to the regular way in NASDAQ, Amex, or NYSE. We find that this when-issued market is liquid and price efficient. The when-issued closing price is a good indicator of the first closing price in the regular way market. Emerging firms that have when-issued trading experience lower regular way volatility and smaller relative spreads than those without when-issued trading. Our probit regressions show that firm size is an important determinant of the adoption of when-issued trading.