Understanding short selling stocks
Interested in short selling? Take a look at our guide for a quick explanation on how it works.
CIBC Investor’s Edge
May. 07, 2021
5-minute read
When the stock market takes a downturn, conventional wisdom often dictates selling off assets and seeking refuge in cash. However, what if there were a more sophisticated approach that might allow you to profit from the decline? This is where short selling comes into play, a strategy that may enable you to benefit when stocks drop in price. By aiming to anticipate and capitalize on this downward movement, short selling may offer an alternative to passively waiting for market corrections. Read on to learn more about the nuances of short selling and its place in a well-rounded investment strategy.
To short sell a stock, you ask your broker — in this case, Investor’s Edge — to lend the stock to you. This happens automatically when you enter an order for a short sale — the stock is lent to you and you can sell it from your account as you would sell any other stock holding. In order to make a short sale, you must have a margin account with enough assets to pledge as collateral for the borrowed securities. When the sale is complete, the proceeds — cash — are credited to your short account, but funds remaining in the account are not available to you until you close the short position.
Note: Short sales are not permitted in cash accounts or registered plan accounts, and not all stocks are available for short selling.
How short selling is different
You’ve just sold something you don’t own and at some point, you’ll have to return that stock to the lender. You can take the initiative to close this trade when you believe it’s appropriate, or the lender can come to you and ask for it back at any time without prior notice.
In either case, you must come up with the stock and cover the short position by purchasing it in the market. At that moment, the price might be lower than where you sold it short. You buy the stock and keep the difference between what you originally sold it for and what you’re now paying to buy it. You’ve just made a profit.
With a short sale there’s a ceiling on your potential profit, but there’s no theoretical limit to the losses you can suffer. If the stock price drops to zero, you get to keep all of the proceeds of your short sell. However, if the stock price skyrockets, the potential loss is unlimited. This is a risk with short selling, as stocks can sometimes rise dramatically and unexpectedly on positive news such as a takeover. This substantial risk should always be kept in mind when engaging in short selling a stock.
Additionally, there may be costs associated with short selling. If you short sell a stock that pays a dividend, you’ll be obliged to pay that dividend to the lender until you close your short position.
What is a mark-to-market calculation?
When you sell a security short, the proceeds of the sale are added to the cash balance in your short account as a positive value. The funds may not be available to you until you close the short position, unless you have other sufficient collateral assets in the account. Meanwhile the market value of the short position appears as a negative value. That negative value is subject to interest charges as long as the short position exists.
The market value of that negative short position changes as the market price goes up and down, but the cash proceeds stay the same. In order to ensure there is enough cash or other marginable assets in the account to cover the short position, plus a “cushion” based on the short security’s margin requirements, Investor’s Edge performs a daily mark-to-market calculation, and restricts collateral securities and cash within your margin account as required.
What happens when the stock price goes down?
If the stock price goes down and you have enough cash and marginable securities in your account to cover the short position and the applicable margin “cushion,” the excess funds are now available for you to use.
What happens when the stock price goes up?
If the stock price goes up, you will need a larger amount of cash and securities in your account to act as collateral for the short position’s margin requirements. If you do not have enough cash and securities in your margin account, you will be subject to a margin call to deposit more funds into your margin account in order to maintain the short position, or your securities will be sold off to cover the short position.
How short selling can result in a profit or loss
Let’s take a look at some scenarios that illustrate how short selling can result in a profit or a loss.
You borrow 100 shares of a stock with a current market price of $10 and sell them for a total of $1,000. You’re now “short” 100 shares. Your profit or loss depends on the price of those 100 shares when you buy them back.
Scenario 1: Profit
The price of the stock decreases to $7 per share from $10.
You close your short position and buy back the 100 shares at $7 per share for a total cost of $700.
Your profit, excluding commissions and interest charged to your margin account, is $300, that is, $1,000 - $700 = $300.
Scenario 2: Loss
The price of the stock increases to $15 per share from $10.
You close your short position and buy back the 100 shares at $15 per share for a total cost of $1,500.
This results in a loss of $500 — $1,000 - $1,500 = -$500 — excluding commissions and interest charged to your margin account.
Short selling stocks: Bottom line
Short selling can be a powerful but potentially risky strategy that allows investors to profit from a declining stock or stock market. By borrowing and selling stocks you don’t own, you can potentially earn a profit if the stock price drops. However, it’s crucial to understand that short selling comes with significant risks, including the possibility of unlimited losses if the stock price rises unexpectedly. Additionally, costs are associated with maintaining a short position, such as interest charges and dividend payments to the lender. Before engaging in short selling, it’s important to consider these risks carefully and ensure you have a solid risk management plan. As with any investment strategy, knowledge and preparation are key to successfully navigating the complexities of short selling.