答案解析中的move around是什么意思

问题如下：

The short index futures makes the portfolio delta neutral. It does not help with large moves.

Which position is most risky?

选项：

A.

Gamma-negative, delta-neutral

B.

Gamma-positive, delta-positive

C.

Gamma-negative, delta-positive

D.

Gamma-positive, delta-neutral

解释：

A riskier position is one that is expected to move around a lot in value. A delta neutral position should not change in value as the value of the underlying asset changes. This eliminates Choice A and Choice D Choice C is correct because a gamma-negative position means that delta and the change in the underlying asset move inversely with each other.