掩護式選擇權
covered option
一個期權，其中賣方(和簽約人)擁有基礎証券，它對立于沒有抵補的(或無保証的)狀況，在無抵補條件下，期權不以現金或其他保証金的形式簽訂。
An option which the seller (and contractors) have underlying securities, it did not offset the stand (or non-guaranteed) status, without crediting conditions, options do not sign in the form of cash or other margin.