Do not use a Stop Loss!

Before you think about setting a Stop Loss order, you need to be aware of the drawbacks. At first, it may seem like the perfect tool to help you avoid heavy losses or to lock in gains. However, there are a number of scenarios where a Stop Loss order can bite you in the ass.

The Gap Down.

If a stock price gaps down overnight and it falls beneath the value of your Stop Loss, your shares will sell at the opening price. Unfortunately for you, this price may be well beneath the price that you are willing to sell at.

Let’s take a look at a quick example.

You have shares in Facebook and the stock price is at $190 USD. You believe in the future of the company and your personal prediction is that it will hit $250 dollars within 12 months. You bought those shares when the stock price was at $175, so you’re currently up $15 dollars per share. Things are going pretty well.

In an effort to try and protect your current profits, you create a Stop Loss order at $185. Basically, if the stock price of Facebook falls to $185 or below, your Stop Loss order will be filled and your shares will sell for a $10 dollar profit.

Unfortunately for you, Facebook CEO Mark Zuckerberg has a big mouth. After the markets have closed, he tells a tech interviewer that the company may lessen the amount of advertisements that are displayed to users. He doesn’t state that they have immediate plans to do this or anything – he is just saying that it may happen in the future if user engagement falls.

As I’m sure you’re aware, a reduction in advertisements will almost certainly lead to a reduction in revenue, which will affect Facebook’s profit margins. This spooks the hell out of current investors – many of which have access to After Hours and Pre-Market trading. Upon hearing the news, they sell like their shares like there is no tomorrow and the stock price crashes to $172 in After Hours trading.

Meanwhile, you’re too busy painting your bathroom walls a new shade of pink or you’re off on holiday in Cancun drinking shots of tequila with your buddies, so you’re not really tuned into what is happening with Facebook. As far as you’re concerned, your Stop Loss is there to protect you and it will kick in if anything goes wrong.

The next morning, the stock price opens at $168 dollars per share and your Stop Loss kicks in. Your broker sells your shares at the best asking price, which happens to be $168 per share. This leaves you with a loss of $7 per share. Crap.

But wait, it gets worse.

As it turns out, investors are emotional creatures and they can sometimes overreact to news stories. Eventually, Zuckerberg clarifies that his comments were taken out of context and the stock price immediately starts to rebound. Unfortunately, by the time you realize what has happened, the stock price has already rebounded to $177. The thing is – your shares are long gone because your Stop Loss kicked in and you sold at the bottom.

Volatility.

Certain stocks are more volatile than others. They can swing up and down by more than 5% in a single day. The share price may fall 7% and bounce off support levels before heading right back up to reach a new all time high. When investing in stocks that are volatile, a tight Stop Loss may be triggered too easily, causing you a loss.

If the share price of a company is at $55 per share and that company is known to trade between $42 and $62, then setting your Stop Loss order at $52 may lead to quick loss. In cases like this, you may want to set it at $41, or $61.50 once it has broken through resistance and reached an all time high.

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