Report Industry Investment Rating No information provided in the given content. Core Viewpoints - The overall atmosphere in the commodity market has warmed up, but the prices of finished products are showing a volatile and slightly stronger trend. The economic data in August slowed down and were lower than expected, increasing the possibility of more stimulus policies. The real - estate sales are still weak, and it will take time for the real - estate market to stabilize. The export volume decreased slightly last week and remains in a weak and volatile pattern. The demand for rebar is weak, while the demand for hot - rolled coils is relatively firm, and the trends of rebar and hot - rolled coils have diverged. Steel mills' profits are gradually narrowing, and the weak characteristics of the market are becoming more prominent. If the subsequent demand cannot be effectively repaired, steel prices still have the risk of decline. The raw material prices are relatively firm, and continuous attention should be paid to the possible disturbances caused by domestic and overseas macro - policies [3]. - The short - term iron ore price is expected to fluctuate. The overseas iron ore shipments have rebounded to the same - period high, the proximal arrival volume has decreased slightly, and the short - term demand support still exists. The steel mill profitability rate continues to decline, and the port and steel mill inventories have both increased slightly. The terminal data shows that the apparent demand for the five major steel products has increased to some extent, and the inventory accumulation speed has slowed down. The rebar data is weak, and the difference between hot - rolled coils and rebar has been strong recently. Attention should be paid to whether the internal contradictions of finished products will be transmitted to the raw material end [6]. - For manganese silicon and ferrosilicon, the prices of their main contracts fluctuated higher on September 17. From a disk perspective, they are in a range - bound pattern. The fundamentals of manganese silicon are not ideal, mainly due to high - level supply and weak demand in the building materials sector. Ferrosilicon has no obvious contradictions and drivers in its supply - demand fundamentals. Both are likely to follow the trend of the black - sector market, and their operational cost - effectiveness is relatively low [8][9][11]. - The price of industrial silicon fluctuated and strengthened. The fundamentals of over - capacity, high inventory, and insufficient effective demand have not changed fundamentally. The short - term valuation is neutral. If the market continues to discuss topics such as "anti - involution", the price may rise further under the expected drive; otherwise, the weak fundamentals will limit the price increase. The price of polysilicon is more influenced by policy narratives. Before the actual progress of capacity integration, the disk price is prone to fluctuate with the ebb and flow of sentiment [13][14][16]. - For glass, the industry supply has increased slightly, and the enterprise inventory has decreased. The pre - holiday stocking has promoted inventory reduction, but the market supply is still abundant, and the terminal demand is weak. It is recommended to be cautiously bullish. For soda ash, the industry supply has contracted slightly, mainly due to the maintenance of production lines. Some downstream enterprises have pre - holiday stocking needs, but most are still purchasing based on rigid demand. The market trading atmosphere is tepid, and it is expected to fluctuate within a narrow range [18][19]. - Although the black - sector prices still have the risk of short - term phased decline under the influence of real - demand, in the face of the subsequent certainty of overseas fiscal and monetary easing, and the opening of China's policy space after the US enters the interest - rate cut cycle, the black - sector may gradually have the cost - effectiveness of long - allocation in the future, and the key node may focus on the "Fourth Plenary Session" around mid - October [10]. Summary by Related Catalogs Steel - **Rebar**: The closing price of the main rebar contract was 3168 yuan/ton, up 2 yuan/ton (0.063%) from the previous trading day. The registered warehouse receipts decreased by 6300 tons, and the position increased by 7123 lots. In the spot market, the aggregated prices in Tianjin and Shanghai decreased by 10 yuan/ton [2]. - **Hot - rolled Coils**: The closing price of the main hot - rolled coil contract was 3390 yuan/ton, down 12 yuan/ton (- 0.35%) from the previous trading day. The registered warehouse receipts remained unchanged, and the position increased by 523 lots. In the spot market, the aggregated prices in Lecong and Shanghai decreased by 20 yuan/ton and 10 yuan/ton respectively [2]. Iron Ore - The main iron ore contract (I2601) closed at 804.50 yuan/ton, with a change of + 0.12% (+ 1.00), and the position increased by 2092 lots to 53.45 million lots. The weighted position was 84.05 million lots. The spot price of PB fines at Qingdao Port was 797 yuan/wet ton, with a basis of 43.25 yuan/ton and a basis rate of 5.10% [5]. Manganese Silicon and Ferrosilicon - **Manganese Silicon**: On September 17, the main manganese silicon contract (SM601) rose 0.77% to close at 5990 yuan/ton. The spot price in Tianjin was 5820 yuan/ton, with a basis of 20 yuan/ton [8]. - **Ferrosilicon**: The main ferrosilicon contract (SF511) rose 1.16% to close at 5766 yuan/ton. The spot price in Tianjin was 5750 yuan/ton, with a basis of - 16 yuan/ton [9]. Industrial Silicon and Polysilicon - **Industrial Silicon**: The closing price of the main industrial silicon contract (SI2511) was 8965 yuan/ton, up 0.56% (+ 50). The weighted contract position decreased by 2096 lots to 510223 lots. The spot price of 553 non - oxygen - permeable silicon in East China was 9100 yuan/ton, and the basis was 135 yuan/ton; the 421 price was 9600 yuan/ton, and the basis was - 165 yuan/ton [13]. - **Polysilicon**: The closing price of the main polysilicon contract (PS2511) was 53490 yuan/ton, down 0.34% (- 180). The weighted contract position decreased by 4424 lots to 289544 lots. The average prices of N - type granular silicon, N - type dense material, and N - type re - feeding material were 49.5 yuan/kg, 51.05 yuan/kg, and 52.55 yuan/kg respectively, with a basis of - 940 yuan/ton [15]. Glass and Soda Ash - **Glass**: On Wednesday at 15:00, the main glass contract closed at 1234 yuan/ton, down 0.24% (- 3). The prices in North China and Central China were 1150 yuan and 1130 yuan respectively. The weekly inventory of float - glass sample enterprises decreased by 146.7 million cases (- 2.33%). The top 20 long - position holders increased their positions by 12356 lots, and the top 20 short - position holders increased their positions by 26149 lots [18]. - **Soda Ash**: On Wednesday at 15:00, the main soda ash contract closed at 1334 yuan/ton, down 0.37% (- 5). The price in Shahe was 1239 yuan, down 5 yuan. The weekly inventory of soda ash sample enterprises decreased by 2.46 million tons (- 2.33%), with the heavy - soda inventory decreasing by 3.74 million tons and the light - soda inventory increasing by 1.28 million tons. The top 20 long - position holders decreased their positions by 7884 lots, and the top 20 short - position holders increased their positions by 13693 lots [19].