On February 26, butadiene rubber (BR) futures experienced a significant decline, with the main contract BR2603 falling over 3% by the time of writing. This drop was primarily driven by a substantial accumulation of BR inventories following the Spring Festival holiday.
**Primary Driver 1: High Operating Rates and Inventory Levels Pressure BR** Data indicates that as of February 25, domestic BR inventories stood at 53,500 tonnes, a significant increase of 19,600 tonnes, or 57.68%, compared to pre-holiday levels. The main reasons for this sharp inventory build are twofold. Firstly, logistical challenges and shutdowns at downstream factories during the holiday period led to a major inventory increase among sampled producers. Furthermore, as the holiday spanned two settlement cycles, trading companies faced increased pressure to book orders, contributing to the rising inventory levels. Secondly, BR operating rates remain high. From a production margin perspective, BR is currently experiencing a loss of approximately -300 yuan per tonne. However, the extent of this loss is not sufficient to prompt producers to voluntarily reduce output or halt production. Additionally, the basis for BR has mostly been negative since December 2025, providing a favorable hedging window for producers of deliverable BR grades, thereby further reducing their incentive to cut production.
**Primary Driver 2: High Domestic Butadiene Operating Rates Weaken Cost Support for BR** Following previous price increases, butadiene profit margins have improved significantly. This prompted the restart of a 100,000 tonnes per year butadiene unit (oxidative dehydrogenation) at Nanjing Chengzhi in late February. Currently, there are few maintenance shutdowns for domestic butadiene units, with only one 130,000 tonnes per year unit at Gulei Petrochemical scheduled for maintenance in March, indicating high domestic butadiene supply. Moreover, port inventories for butadiene remain at historically high levels.
**Market Outlook:** On the cost side, short-term planned maintenance for domestic butadiene is limited, keeping supply high. However, high operating rates at downstream synthetic rubber plants provide some demand support for butadiene. Post-holiday, butadiene port inventories saw only a slight accumulation, and the anticipated decline in net imports is materializing. Butadiene prices are expected to trade within a range in the near term. On the supply side, BR inventories and operating rates are expected to remain elevated in the short term. The anticipated decline in the March operating rate is likely to be limited, as two BR units at Zhejiang Transfar are scheduled for routine maintenance only at the end of March. On the demand side, Chinese tire exports to the EU are expected to see a surge in March, supporting tire factory operating rates. Overall, while short-term support from BR costs and demand exists, high BR operating rates and inventory levels present headwinds. In the near term, support for the BR2604 contract is anticipated around the 12,500 level, with subsequent price movements dependent on downstream procurement activity. Risk Warning: Butadiene imports may increase beyond expectations.
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