开仓时交易收益都是未知的，当你认识到并相信这种说法时，交易头寸背后的心理因素就开始发挥作用。
Thus, the psychology behind trade size begins when you believe and acknowledge that each trade's outcome is unknown at the time you enter the trade.
仓位控制是调整交易的头寸的数量以符合你预先设定的风险金额和止损距离的一个步骤。
Position sizing is the term given to theprocess of adjusting the number of lots you trade to meet your pre-determinedrisk amount and stop loss distance.
在此生效日期之前开立的对冲头寸并不需要清算，但一旦那些仓位在5月15日后关闭，就不能重新开立相反的头寸来对冲。
Offsetting positions that were established prior to the effective date do not have to be liquidated, but once either position is closed out after May 15, it may not be reestablished as a hedge.
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