上期所优化交割结算价计算方式，更好发挥期货市场价格发现功能

Core Viewpoint - The Shanghai Futures Exchange (SHFE) is adjusting the settlement price calculation method for certain futures contracts to enhance price discovery and align with spot trading practices, thereby reducing hedging costs for enterprises [1][2] Group 1: Price Calculation Method Changes - The settlement price calculation for futures contracts will shift from a "5-day weighted average price" to a "5-day arithmetic average price" for specific commodities, including gold, pulp, natural rubber, and No. 20 rubber [1] - This change is expected to improve price predictability for enterprises and significantly lower their hedging costs [1] Group 2: Classification of Settlement Price Calculation - The adjusted settlement price calculation methods are categorized into two types: one using the "last trading day's settlement price" for metal commodities, and the other using the "5-day arithmetic average price" for energy and chemical products, as well as some metal products [2] - The new methods consider the trading habits of various commodities, the characteristics of the futures market, and the maturity of the market, aiming to enhance convenience for market participants and the effectiveness of price discovery [2]