股指期货基本术语有哪些？

Core Concept - The article provides a comprehensive overview of stock index futures, including their definition, trading mechanisms, and key terminologies related to trading, positions, and settlements [2][3][7]. Trading Mechanism - Stock index futures are standardized contracts based on stock market price indices, allowing parties to agree on buying or selling the index at a predetermined date [2]. - The value of a stock index futures contract is determined by the underlying index, which varies by market, such as the CSI 300 Index in China and the S&P 500 Index in the U.S. [2]. Key Terminologies Trading Related Terms - Trading Volume: Total number of contracts traded on a given day, reflecting market activity [3]. - Latest Price: The price of the most recent transaction, which fluctuates based on market demand [3]. - Price Change: The difference between the latest price and the previous day's settlement price, indicating price movement [3]. - Price Change Percentage: The ratio of price change to the previous day's settlement price, expressed as a percentage [3]. Position and Settlement Related Terms - Open Interest: Total number of outstanding contracts that have not been settled, indicating market sentiment [5]. - Settlement Price: The weighted average price of contracts traded during the day, used for calculating profits and losses [5]. - Margin: A percentage of funds required from investors to trade stock index futures, which lowers the entry barrier and amplifies leverage [7]. Trading Rules - Opening Position: The act of initiating a new buy or sell contract, categorized into "buy open" and "sell open" [7]. - Closing Position: The act of reversing a previously opened position to realize gains or losses [8].