tailieunhanh - The option trader s guide to probability volatility and timing phần 7

Tuy nhiên, không thể để tính toán giá trị chính xác của các cuộc gọi đường dài, và do đó, hòa vốn khi các cuộc gọi ngắn hết hạn. Nó có thể để có được một ý tưởng hoặc đoán thô, nhưng nó là tốt hơn để sử dụng phần mềm máy tính để vẽ đồ thị rủi ro và xem các điểm hòa vốn tiềm năng có thể. | Choosing the Right Broker 343 brokers do not offer any sort of financial advice. They simply execute buy and sell orders on your behalf at the lowest cost possible. For instance to buy 100 shares of a stock trading for 55 a full-service broker will charge between 75 and 200 while a discount broker charges only 10 to 20. At the same time a full-service broker will place the order in context of your personal financial situation and if you request offer advice as to whether it is a suitable investment for you. A discount broker will simply complete the transaction according to your instructions. Charles Schwab and E Trade are examples of discount brokers. If you are reading this book chances are you will be a self-directed investor and it will not make much sense to use a high-priced broker. Instead you will focus on online firms that specialize in options trading and have relatively low commission schedules. THE OPTIONS ACCOUNT Believe it or not one problem new traders sometimes face is not being able to obtain permission to trade options from a broker. Clients of brokerage firms who want to trade options are required to complete an options approval form when opening new accounts. The options approval form is designed to provide the brokerage firm with information about the customer s experience knowledge and financial resources. According to the know your customer rule options trading firms must ensure that clients are not taking inappropriate risks. Therefore the new account form and the options approval document gather appropriate background information about each customer. Once the documents are submitted the compliance officers within the brokerage firm determine which specific strategies are appropriate for the client. The process is designed to ensure that inexperienced traders do not take inappropriate risks. For example if the option approval form reveals that the client has little or no options trading experience and then the client goes on to lose large .

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