SHFE base metals stocks exhibit mixed moves; copper climbs 12%

Deliverable stocks of base metals at Shanghai Futures Exchange-registered warehouses were on divergent paths in the week to Friday August 26, with copper topping the gains in percentage terms, while tin led the declines

Copper inventories totalled 34,898 tonnes on Friday, up by 3,693 tonnes (or 11.8%) from a week earlier. The largest inflow of the red metal, at 4,823 tonnes, was registered at the SIPG Logistics warehouse in Shanghai, according to the exchange’s weekly inventory report.

Quiet spot buying activity and a rally in SHFE copper prices prompted deliveries of the metal into warehouses this week, market sources told Fastmarkets.

“China’s elevated spot premium discouraged spot buying, and this, together with rising SHFE copper prices, explains the increase in stocks,” a Shanghai-based trader said.

High spot premiums in China’s domestic market had previously spurred buyers’ appetite for imports, pushing up premiums for copper cathode being imported into the country.

But premiums weakened at the start of this week, resulting in less supportive conditions for import activity.

Fastmarkets’ benchmark copper grade A cathode premium, cif Shanghai, was assessed at $80-96 per tonne on Friday, down by $13-15 per tonne from $95-109 per tonne a week earlier.

Elsewhere, tin stocks registered a noticeable decline this week, falling by 14% week on week to 2,431 tonnes on Friday.

Other SHFE base metals stock changes• Aluminium stocks up by 6,678 tonnes (3.4%) to 204,564 tonnes
• Lead stocks rose by 470 tonnes (0.7%) to 71,822 tonnes.
• Zinc stocks fell by 5,918 tonnes (6.2%) to 90,288 tonnes.
• Nickel stocks decreased by 280 tonnes (7.3%) to 3,538 tonnes

What to read next
Copper in concentrate production from Ivanhoe Mines' Kamoa-Kakula complex in the Democratic Republic of Congo (DRC) fell to 61,906 tonnes in the first quarter, down by 54% from 133,120 tonnes a year earlier, with the company now evaluating local third-party concentrate purchases to advance the ramp-up of its on-site smelter, according to an April 13 production release as the market focused its attention on the impact of global sulfuric acid shortages during CESCO Week in Chile from April 13-17.
China's planned sulfuric acid export ban from May 1, historic lows for copper concentrates treatment and refining charges (TC/RCs) and a fragmenting 2026 benchmark system dominated CESCO Week 2026 in Santiago from April 13-17.
The China Zinc Smelter Purchase Team (CZSPT) set its buying guidance for imported zinc concentrate treatment charges (TCs) at $35-70 per tonne for the second quarter of 2026 during a meeting held in Chengdu, China.
The proposal would align the index more closely with physically traded volumes in the region, and enable it to adjust to evolving market conditions. This proposal follows an observed widening of the spread between trader and smelter purchase components of the index and is aligned with a majority of market feedback. Additionally, Fastmarkets seeks feedback […]
Until now, aluminium has been hard to move, not hard to find. Global aluminium supply had remained technically intact, even as output was curtailed in parts of the Gulf, inventory buffers were drawn down or repositioned, and shipping through the Strait of Hormuz was severely disrupted.
Global aluminium producers face heightened uncertainty over power supplies, with oil and gas prices elevated by the closure of the Strait of Hormuz, through which around 20% of global oil and liquefied natural gas (LNG) flows, sources told Fastmarkets.