1. situation when an investor who wants to buy a stock at a particular price hesitates and the stock begins to rise. Instead of letting the stock go, he "pays up" to buy the shares at the higher prevailing price.
2. when an investor buys shares in a high quality company at what is felt to be a high price. Such an investor will say "I realize that I am paying up for this stock, but it is worth it because it is such a fine company."




