I know little-to-nothing about stock trading. Can someone please give me the "Dummie's" version of

[Yavin4]

21. The concept of Short Selling is not limited to just stocks.

There are a number of ways of achieving a short position. The most fundamental method is so-called "physical" short-selling, which involves borrowing assets (often securities such as shares or bonds) and selling them. The investor will later purchase the same number of the same type of securities in order to return them to the lender. If the price has fallen between the time of the initial sale and the time the equivalent securities are repurchased, the investor will have made a profit equal to the difference. Conversely, if the price has risen then the investor will bear a loss. The short seller must usually pay a fee to borrow the securities (charged at a particular rate over time, similar to an interest payment), and reimburse the lender for cash returns the lender would have received had the securities not been lent out, such as any dividends that would have been payable to the lender if they were still the holder of shares that they had lent out.

Short positions can also be achieved through futures, forwards or options, where the investor can assume an obligation or a right to sell an asset at a future date at a price that is fixed at the time the contract is created. If the price of the asset falls below the agreed price, then the asset can be bought at the lower price before immediately being sold at the higher price specified in the forward or option contract. A short position can also be achieved through certain types of swap, such as contracts for differences. These are agreements between two parties to pay each other the difference if the price of an asset rises or falls, under which the party that will benefit if the price falls will have a short position.

https://en.wikipedia.org/wiki/Short_(finance)

The concept is that you are "renting", "borrowing", or gaining the value of an asset today while taking on the liability of paying back said asset at a future time at the value of that asset in the future.

Again, why are you so hostile? Is it because I got some praise for my post? Is that it? Are you that petty?