- Market order: buy or sell a given instrument at the market price.
The price for this type of orders is defined as the best price available for the market at the moment the order is being placed.
Since the price changes in real time, the total amount and the fee amount are provided as estimates rather than exact values.
- Stop order: execute a trade at a specified price (stop price).
A trader may specify the desirable stop price for this order. When the stop price is reached, a stop order becomes a market order.
A Stop order doesn't require reserved funds and will not appear in the order book before it's activated.