What is the definition of a stock on sale?

Answer

I think you are referring to value priced stocks. They are stocks that are cheaper than they ought to be for some reason. In other Words, their value is more than the value they are selling for. That would be like buying something on sale, right?

THIS PART IS ADDED TO THE ANSWER ABOVE!!!!

It is the repurchase of a previously bought stock.

-Ov nick 11