From just prior to the stock split record date, through the stock split distribution date, two separate markets exist for IBM. The "regular way" market continued to trade at the higher, pre-split price. Since sellers in the market at the "regular way" pricereceive full value for the shares they sell, they are not entitled to the split shares they will receive by virtue of their being holders on the record date, so they transfer the split shares to their buyers by means of "due bills." The redemption date for due bills is 1 June 1999.
Stockholders might alternatively sell shares before the split distribution date at the lower post stock split price, and this is accomplished by the establishment of a "when issued" post-split price. The "when issued" price is approximately one-half of the regular pre-split price, to reflect the pending 2 for 1 split . "When issued" trading ceases after the market closes on the distribution date. When you sell shares at the lower "when issued" price you normally are entitled to receive the stock split shares on the shares you sold.
If you buy stock at the "regular way" price, you normally are entitled to receive the stock split shares. If you buy stock at the "when issued" price, you normally are not entitled to receive the stock split shares.
From 6 May through 26 May, IBM stock will trade at both the "regular way" and "when issued" prices and these prices will be reflected in the stock tables found in many newspapers and through other quote services. IBM will again trade at only one price on 27 May, the day after the stock split share distribution.