Dollar Cost Averaging
Dollar cost averaging - Investing a fixed amount in fixed time intervals into the same security.
Dollar cost averaging is a great, disciplined way to save.
Mathematically, dollar cost averaging will result in a lower average cost than the average price of the stock during that period.
This is because the number of shares purchased varies as the prices fluctuate.
(You end up buying more when it is cheap and buying less when it is expensive).