供给端扰动频发，铜价有望迎来上行周期：有色金属大宗商品周报（2025/9/22-2025/9/26）-20250928

Investment Rating - Investment rating: Positive (maintained) [5] Core Views - The copper market is expected to transition from a tight balance to a shortage due to frequent supply disruptions, with prices likely entering an upward cycle. Recent price changes for copper include +2.08% for LME copper, +3.20% for SHFE copper, and +2.89% for COMEX copper. The Grasberg mine, the world's second-largest copper mine, has faced production halts, with Freeport estimating a recovery to pre-accident production levels by 2027, leading to a projected 35% decrease in copper production in 2026 compared to previous expectations. Domestic copper inventories are decreasing, with LME, COMEX, and SHFE inventories at 144,000 tons, 322,000 short tons, and 99,000 tons respectively, showing changes of -2.2%, +1.7%, and -6.7% [6][4][5]. Summary by Sections 1. Industry Overview - Domestic and international macroeconomic indicators show that initial jobless claims in the U.S. were lower than expected, with 218,000 claims reported against an expectation of 235,000. The core PCE price index for August matched expectations at 2.9% [10]. 2. Market Performance - The non-ferrous metals sector outperformed the Shanghai Composite Index, with a weekly increase of 3.52%, ranking second among Shenwan sectors. The copper, copper products, and cobalt sectors showed the most significant gains, while other small metals and aluminum sectors lagged behind [12]. 3. Valuation Changes - The TTM PE ratio for the Shenwan non-ferrous metals sector is 24.83, with a weekly change of 0.63. The PB ratio is 2.97, with a weekly change of 0.08. The non-ferrous sector's PE ratio is 112% of the overall A-share market, while the PB ratio is 165% [21][24]. 4. Industrial Metals - Copper prices increased, with LME copper up 2.08% and SHFE copper up 3.20%. Copper inventories decreased by 2.20% for LME and 6.65% for SHFE. The smelting fee is reported at -40.3 USD/ton, with copper smelting margins at -2701 CNY/ton [26][39]. 5. Aluminum - LME aluminum prices fell by 1.36%, while SHFE aluminum prices decreased by 0.22%. The inventory situation shows a 0.74% increase in LME aluminum stocks and a 2.43% decrease in SHFE stocks. The price of alumina dropped by 2.15% [39]. 6. Lithium - Lithium carbonate prices rose by 0.14% to 73,600 CNY/ton, while lithium spodumene prices fell by 0.23% to 857 USD/ton. The lithium supply chain is entering a destocking phase due to increased demand [79]. 7. Cobalt - Cobalt prices increased, with MB cobalt up 3.22% to 16.83 USD/pound and domestic cobalt prices rising by 14.80% to 318,000 CNY/ton. The Democratic Republic of Congo is set to implement a cobalt export quota system, which may lead to a tightening of supply and further price increases [92].