8. 锁单
八、锁单
| 指投资者在买卖合同后，当市场出现与自己操作相反的走势时，开立与原先持仓相反的新仓（相同的手数），又称对锁、锁单，也称蝴蝶双飞。 |
为什么锁单：
通常只有在操作失误，忘记或者没有止损价的情况下行情暴走导致损失惨重，这时候才会进行锁单保证自己的账户在有限余额内不会爆仓，然后再寻求机会解单出场。
如何锁单：
指投资者在买卖合同后，当市场出现与自己操作相反的走势时，开立与原先持仓相反并且相同的手数新仓。即买了一手多单之后，过了一段时间买回一手空单，这样系统自动锁单，原来两手单的保证金2000美元变成锁仓保证金350美元。并且净值和比例保持不变，令账户不会爆仓。
本文来源： 大田环球贵金属
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