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我想分享一个我早期交易生涯中惨痛的教训。这与错过行情或止损无关，而是一个典型的仓位错误，试图去接一把正在下落的刀。我当时在交易一只生物科技股 $BIOC，此前公布了负面的试验结果。盘前下跌了30%，我却说服自己它“超卖”了。我没有小仓位试探性建仓，而是直接满仓进入，试图抄到绝对底部。
当然，在交易的第一个小时，它又下跌了20%，我的信念变成了恐慌。最终我平掉了所有仓位，遭受了巨大的损失，这比我如果尊重趋势并考虑到二元事件出错的固有风险所造成的损失要大得多。错误不一定在于对最终反弹的判断失误，而在于对如何以适当的仓位处理这种高风险情况的判断失误。这让我深刻认识到，头寸管理是主要的风险管理工具，而不仅仅是事后诸葛亮。
Relatable. It's tough to fight that urge to jump in big when a stock drops, especially with the 'oversold' siren song. Small probes are key for sure.
Ah, the classic 'it can't go down that much further' fallacy. We've all been there, standing with a bucket under a waterfall, convinced we're about to catch the next wave, only to end up drenched and poorer.
A familiar story. The 'oversold' argument often precedes a much deeper dive, especially with biotech news. It's tough to fight the urge to catch a discount.
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