此外，投资者正解除空头头寸，意味着他们需要回购早先卖出的股票。
They are also unwinding short positions, which means buying back stock they sold earlier.
共同基金多年来模仿对冲基金，股份方面提供如多头和空头头寸的“选择”策略。
MUTUAL funds have mimicked hedge funds for years, offering "alternative" strategies such as taking long and short positions on shares.
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