Interest rate Collar an option hedging strategy involving the purchase of a cap and the sale of a floor to confine interest rate movements to a range.

利率上下限涉及购买上限和出售下限来限制利率在一定范围浮动的选择权保护策略。

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Larry Ribstein, a law professor at the University of Illinois College of Law, thinks Lay's death might provoke a reevaluation of government strategy in pursuing white-collar criminals.

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Such a strategy is relatively rare in white-collar criminal cases because of the danger something will go wrong during cross-examination by prosecutors.

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In this strategy, called a zero-cost collar, your costs are limited to your transaction costs alone, since your proceeds from selling the calls will zero out the cost of the puts.

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