In trading, a stop limit order is a type of order which gives investors a great deal of control over transactions made by brokers. A sale or purchase of securities is only triggered when a specific threshold is reached. If and when the stop order threshold is reached, the order becomes a limit order. The limit order ensures that the securities will only be bought or sold if market rates match or outperform the specified limits.
Example: An investor wants to sell their shares in a certain stock if the value of that stock falls to or below 108 Swiss francs per share, but they do not want to sell the shares for less than 108 francs each. They place a stop limit order with a stop threshold of 108 francs and a limit threshold of 108 francs. If the value of the stock falls to or below 108 francs, a limit order is triggered. Because the limit order has a threshold of 108 francs, the shares will not be sold unless the broker can find a buyer willing to pay 108 francs per share.