合成橡胶：现货成交好转，步入震荡

Report Summary 1. Report Industry Investment Rating - The trend strength of synthetic rubber is 0, indicating a neutral view. The range of trend strength is an integer within the [-2, 2] interval, where -2 means the most bearish and 2 means the most bullish [3]. 2. Core View - In the short term, the decline rate of butadiene rubber has slowed down. The decrease in butadiene rubber inventory and the improvement in spot trading have supported the price. In the medium term, the weak performance of butadiene has led to a downward shift in the dynamic valuation range of butadiene rubber. With the decline in the cost side, the processing profit of butadiene rubber has expanded significantly. Under the neutral background of butadiene rubber's own fundamentals, the futures price reflects the expectation of profit contraction. The macro - driving force has weakened, and butadiene rubber is expected to operate weakly. Attention should be paid to whether the supply - demand pattern of butadiene rubber will improve in the short term [4]. 3. Summary by Related Catalogs 3.1 Fundamental Tracking - Futures Market: The closing price of the butadiene rubber main contract (01 contract) increased by 70 yuan/ton to 10,305 yuan/ton, the trading volume decreased by 4,704 lots to 128,144 lots, the open interest increased by 327 lots to 83,941 lots, and the trading volume decreased by 16,845 ten - thousand yuan to 653,280 ten - thousand yuan. The basis of Shandong butadiene rubber - futures main contract increased by 30 to - 5, and the monthly spread (BR12 - BR01) decreased by 10 to 80 [1]. - Spot Market: The prices of North China, East China, and South China butadiene rubber (private) increased by 50 - 100 yuan/ton. The market price of Shandong butadiene rubber (delivery product) increased by 100 yuan/ton to 10,300 yuan/ton. The price of Qilu styrene - butadiene rubber (model 1502) increased by 100 yuan/ton to 10,700 yuan/ton, and the price of Qilu styrene - butadiene rubber (model 1712) remained unchanged at 9,700 yuan/ton. The mainstream prices of butadiene in Jiangsu and Shandong increased by 150 yuan/ton and 125 yuan/ton respectively [1]. - Fundamentals: The butadiene rubber operating rate increased by 2.44 percentage points to 66.7364%, the theoretical full cost of butadiene rubber remained unchanged at 9,607 yuan/ton, and the profit of butadiene rubber remained unchanged at 593 yuan/ton [1]. 3.2 Industry News - As of November 5, 2025, the domestic butadiene rubber inventory was 2.93 million tons, a decrease of 0.16 million tons from the previous period, a month - on - month decrease of - 5.15%. During this period, the supply of raw material butadiene was sufficient, the negotiation center continued to decline, and the cost side continued to have a negative impact. The downstream pressured for lower prices, and some production enterprises were under maintenance, resulting in a decrease in both production enterprise and trading enterprise inventories [1]. - From October 23 - 29, 2025, the total inventory of domestic butadiene samples increased, with a month - on - month increase of 14.23%. Among them, the inventory of sample enterprises increased slightly by 1.47% from the previous week, and the inventory of sample ports increased significantly by 30.08% from the previous week. It is expected that the import volume from October to November will still be abundant [4].