感觉都是设定一个价格，关键在于一个强调止损？
参考
| Limit Order | Stop Order | |
|---|---|---|
| Instruction | Trade at a price equal to or better than a certain price. For buy orders, buy at X or lower. For sell orders, sell at X or higher. | Trade if price moves beyond the desirable target. For sell orders, sell if price falls below X. For buy orders, buy if price climbs above X. |
| Intent | Investors use limit orders to lock in the price they want because limit orders are guaranteed to execute (if they execute at all) at a particular price or better. | The intent of a stop order is to limit losses. If a stock’s price is moving in a direction opposite of what the investor would like, a stop order places a ceiling on potential losses. |
| Disadvantages | Higher commission from stockbrokers. Possibly not executed if price not reached. | Trade price may be worse than stop price. Can be triggered by short term fluctuations. |
