字幕列表 影片播放 列印英文字幕 Welcome to the Investors Trading Academy talking glossary of financial terms and events. Our word of the day is "Call" Traders just use the word "call" to signal that an asset is going to move up, but it represents a financial contract between two parties, the buyer and the seller. The buyer of the call option has the right, but not the obligation to buy an agreed quantity of a particular commodity or financial instrument from the seller of the option at a certain time for a certain price known as the strike price. The seller is obligated to sell the commodity or financial instrument should the buyer so decide. The buyer pays a fee called a premium for this right. The buyer of a call option purchases it in the hope that the price of the underlying instrument will rise in the future. The seller of the option either expects that it will not, or is willing to give up some of the upside from a price rise in return for the premium and retaining the opportunity to make a gain up to the strike price (see below for examples). Call options are most profitable for the buyer when the underlying instrument moves up, making the price of the underlying instrument closer to, or above, and the strike price. The call buyer believes it's likely the price of the underlying asset will rise by the expiry. The risk is limited to the premium. The profit for the buyer can be very large, and is limited by how high the underlying instrument's spot price rises. When the price of the underlying instrument surpasses the strike price, the option is said to be "in the money".