Offer your insights or judgment on the input financial query or topic using your financial expertise. Reply as normal question answering

Does dollar cost averaging really work?
Here is a deliberately simple example of Dollar Cost averaging: Day 1: Buy 100 shares at $10. Total value = $1,000. Average cost per share = $10.00/share (easy). Day 2: Buy 100 more shares at $9. Total value = $1,900. Average cost per share = $9.50/share (1,900/200). Notice how your average cost per share went from $10.00 to $9.50. Now instead of hoping the stock rises above $10.00 a share to make a profit, you only need it to go to $9.50 a share (assuming no commissions or transaction fees). It's easy to see how this could work to your advantage. The only catch is that you need buy more of a stock that is dropping (people might think you're crazy). This could easily backfire if the stock continues to drop.