Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

If I believe a stock is going to fall, what options do I have to invest on this?
There are three ways to do this. So far the answers posted have only mentioned two.  The three ways are: Selling short means that you borrow stock from your broker and sell it with the intent of buying it back later to repay the loan.  As others have noted, this has unlimited potential losses and limited potential gains.  Your profit or loss will go $1:$1 with the movement of the price of the stock. Buying a put option gives you the right to sell the stock at a later date on a price that you choose now.  You pay a premium to have this right, and if the stock moves against you, you won't exercise your option and will lose the premium.  Options move non-linearly with the price of the stock, especially when the expiration is far in the future.  They probably are not for a beginner, although they can be powerful if used properly. The third option is a synthetic short position.  You form this by simultaneously buying a put option and selling short a call option, both at the same strike price.  This has a risk profile that is very much like the selling the stock short, but you can accomplish it entirely with stock options.  Because you're both buying an selling, in theory you might even collect a small net premium when you open. You might ask why you'd do this given that you could just sell the stock short, which certainly seems simpler.  One reason is that it is not always possible to sell the stock short.  Recall that you have to borrow shares from your broker to sell short.  When many people want to short the stock, brokers will run out of shares to loan.  The stock is then said to be "hard to borrow," which effectively prevents further short selling of the stock.  In this case the synthetic short is still potentially possible.