#OrderTypes101 Common order types include market orders, limit orders, stop limit orders, stop market orders, trailing stop orders, and post only orders. Market orders are executed at the current market price, while limit orders are executed at a predefined price or better. Stop limit orders are triggered when the price reaches a stop price and then become limit orders, while stop market orders are triggered and executed at the market price. Trailing stop orders follow the market price and are activated if the price moves against the position, and post only orders are executed only if they can add liquidity to the market.