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How can you possibly lose on investments in stocks?
Some stocks do fall to zero. I don't have statistics handy, but I'd guess that a majority of all the companies ever started are now bankrupt and worth zero. Even if a company does not go bankrupt, there is no guarantee that it's value will increase forever, even in a general, overall sense. You might buy a stock when it is at or near its peak, and then it loses value and never regains it. Even if a stock will go back up, you can't know for certain that it will. Suppose you bought a stock for $10 and it's now at $5. If you sell, you lose half your money. But if you hold on, it MIGHT go back up and you make a profit. Or it might continue going down and you lose even more, perhaps your entire investment. A rational person might decide to sell now and cut his losses. Of course, I'm sure many investors have had the experience of selling a stock at a loss, and then seeing the price skyrocket. But there have also been plenty of investors who decided to hold on, only to lose more money. (Just a couple of weeks ago a stock I bought for $1.50 was selling for $14. I could have sold for like 900% profit. Instead I decided to hold on and see if it went yet higher. It's now at $2.50. Fortunately I only invested something like $800. If it goes to zero it will be annoying but not ruin me.) On a bigger scale, if you invest in a variety of stocks and hold on to them for a long period of time, the chance that you will lose money is small. The stock market as a whole has consistently gone up in the long term. But the chance is not zero. And a key phrase is "in the long term". If you need the money today, the fact that the market will probably go back up within a few months or a year or so may not help.