A Money Machine?
Now that we understand that a dividend can be received by purchasing the stock before the ex-date, can we make more money? Nope, it's not that easy. Remember, everybody knows when the dividend is going to be paid, and the market sees the dividend payout as a time when the company is giving out a part of its profits (reducing its cash). So the price of the stock will drop approximately by the amount of the dividend on the ex-dividend date. The word "approximately" is crucial here. Due to tax considerations and other happenings in the market, the actual drop in price may be slightly different. In any case, the point is that you can't make free profits on the ex-dividend date.