平值期權
at-the-money
選擇權的執行價等於標的物資產價格，亦即履約價等於或接近其基礎票據價格的一項期權；或衍生產品之市價與行使價相約。
Option exercise price equal to the price of the underlying physical assets, that is, the exercise price is equal to or close to its base notes an option price; or price of derivative products and similar exercise price.