Offer your thoughts or opinion on the input financial query or topic using your financial background.

How often do typical investors really lose money?
The earlier answers answered the question on how a more practical trader can lose money. Here I'd like to mention some obtuse ways  Using debt to buy stocks. If one is borrowing at a higher rate than they are getting back, from an economics prospective their stocks are losing money even if the value of those stocks are going up. Using debt to buy stocks. I'll simplify the nightmare situation. I know someone who has Y dollars of cash. Their broker will loan them X. With their X+Y money, they purchase some equities through the broker. The agreement of the loan is that if the value of those equities drops below a certain percentage of the outstanding debt (ex 150%), the broker will automatically and without notification, sell some equities indiscriminately to reduce the outstanding debt. Being in high-interest debt but buying stocks. There are millions of people who are paying 15+% interest rates on consumer debt while investing and getting 5% returns or less on average. Similar to an earlier point, from an economics prospective the choice to buy equities is a profit losing choice.