Since 2005 Apple Inc stock value have been rising. As individuals, firms and government agencies keep buying Apple's products and Apple stocks will keep increasing, as Apple Inc continues to optimize and add more products their stock value will keep increasing. To buy Apple stock, it is okay to buy at 128, because that is the closest equilibrium price. There is an horizontal line on the equilibrium. Anyone who wants to buy Apple Inc can continue watching till it falls on the Equilibrium price or goes below.