TAILIEUCHUNG - Pearson The Financial Times Guide to Options_8

Đặt tùy chọn đặt quyền bán tài sản cơ bản ở một mức giá quy định cho một khoảng thời gian quy định. Người mua đặt có quyền, nhưng không phải là nghĩa vụ, bán cơ bản. Người bán đặt có nghĩa vụ mua cơ bản theo quyết định của người mua đặt. | 306 Glossary Parity An in-the-money option with no time premium that consequently has a 100 per cent correlation with the underlying. Pin risk The risk of an underlying closing exactly at the options strike price at expiration. The risk lies primarily with the short option holder because he is uncertain of assignment. Put A put option is the right to sell the underlying asset at a specified price for a specified time period. The put buyer has the right but not the obligation to sell the underlying. The put seller has the obligation to buy the underlying at the put buyer s discretion. Put spread A long put spread is a long put plus a short put at a lower strike. A short put spread is the opposite. Reversal Short underlying plus long synthetic. Rho The change of an option s value through a change in the interest rate. Short To short is to sell. A short futures contract sells a cash or physical asset when the contract expires. A short options contract sells the right to buy for a call or the right to sell for a put. Short deltas Any combination of short calls long puts and short underlying. Stop order An order to buy or sell at the market price when a market reaches a pre-specified price level. Straddle A call plus a put at the same strike both either long or short. Strangle An out-of-the-money call plus an out-of-the-money put both either long or short. Strike price The price of the underlying that forms the basis of an options contract. Synthetic call A long synthetic call is a long put plus a long underlying. A short synthetic call is a short put plus a short underlying. Synthetic put A long synthetic put is a long call plus a short underlying. A short synthetic put is a short call plus a long underlying. Synthetic underlying A long synthetic is a long call plus a short put at the same strike. A short synthetic is a short call plus a long put at the same strike. Sometimes referred to as the combo. Theta The amount that an option decays in one day. Theta price ratio

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