By SIMON CONSTABLE What is a buyback window, and does it matter for investors?
It is a period when a company is allowed to buy back its stock. Companies including the largest, Apple Inc., have been buying, which tends to support the price.
The reason for a period when a company can buy back stock and a period when it can’t is to prevent companies from violating insider-trading rules. A company can’t buy back stock when it has nonpublic information that could affect the share price.