A cover order and a regular market order are both used to enter a stock position, but they differ mainly in how risk management and stop-loss protection are handled. A regular market order instructs a broker to buy or sell a stock at the best available market price. It generally does not automatically include a stop-loss order, so the trader must place a separate stop-loss if protection is required.

A cover order, on the other hand, combines the initial trade with a compulsory stop-loss order. When placing a cover order, the trader specifies the required stop-loss or trigger level along with the entry. This structure is designed primarily for intraday trading and can, depending on the broker and applicable rules, provide margin benefits compared with an ordinary order. Because the stop-loss is an integral part of the order, the trader cannot simply remove the risk-control component while keeping the position open.

Another important difference is flexibility. A regular market order can generally be used for various trading purposes, including situations where the trader intends to hold the position beyond the trading session, subject to the product selected. Cover orders are usually subject to specific broker rules, product restrictions, and square-off requirements.

For example, if a trader buys a stock using a regular market order, they may later decide whether and where to place a stop-loss. With a cover order, the stop-loss requirement is established as part of the trade from the beginning.

Therefore, the key distinction is that a regular market order focuses on immediate execution, while a cover order combines market entry with predefined downside protection and specific trading conditions. Traders should check their broker's current rules before using cover orders.