I. Japan Market This week, Japan MJP aluminum ingot spot premiums showed a continuous downtrend, with the average price at $384/mt on June 19 pulling back to $380/mt by June 26. Although premiums kept dipping, some traders lowered their offers proactively while others held prices firm. The demand side exhibited restocking for rigid demand, with downstream enterprises purchasing as needed. Short-term restocking activity was moderate, but there was no large-scale concentrated stockpiling, and overall purchasing volume was mild. Currently, the market trading pace is slowing down, spot lacks a trend-driven upward driver in the short term, and premiums follow the futures to stay in the doldrums. II. US Market This week, US Midwest DDP aluminum spot premiums edged up, from an average of $110.2/mt on June 19 to $110.35/mt this Friday. US market fundamentals still provided support: two major demand-side increases were being released, with aluminum semis demand for AI computing data centers surging, coupled with the concentrated commissioning of new production lines at NEV manufacturers such as Tesla, steadily boosting aluminum consumption for automotive lightweighting, keeping the digestion pace of domestic aluminum ingots high. The supply side faced constraints, with Middle East geopolitical disturbances disrupting ocean shipments of aluminum ingots, arrivals growth from outside China consistently lagging downstream demand growth, and domestic inventory continuing to destock, supporting premiums to stay high. However, the pressure logic for the outlook is gradually emerging: LME aluminum prices have already fallen to a staged low, cross-regional arbitrage windows remain open, and arrivals of aluminum ingots flowing into the US market will gradually increase. Coupled with this week’s premiums having stopped rising and weakened slightly, the tight supply-demand situation will marginally ease as external supply replenishes. It is anticipated that US spot premiums will stay high but face pressure going forward, with upside room essentially capped and a pullback adjustment possible. III. Thailand Market This week, Thailand spot premiums rose from $320/mt last Friday to $323/mt this Friday. Affected by the decline in aluminum prices, some traders raised their offers. However, the upside momentum was weak, and the trading atmosphere remained sluggish. Local downstream users only maintained a hand-to-mouth purchase pattern for rigid demand, with low willingness for large-scale stockpiling. Meanwhile, continuous arrivals of aluminum semis exports from China, with large volumes of low-priced fabricated products flowing into the Southeast Asian end-use markets, directly diverted import orders for primary aluminum ingots and significantly squeezed local aluminum demand. [Data source statement: Other than publicly available information, all data are based on public information, market communication, and SMM's internal database models, and are processed by SMM. For reference only, and do not constitute decision-making advice.] Data source: SMM

With the continued expansion of aluminum processing and downstream industries in Southeast Asia, regional aluminum billet production, consumption and trade markets have attracted growing attention. Malaysia, Thailand and Vietnam are not only important aluminum billet production and consumption hubs in Southeast Asia, but also play a key role in regional aluminum billet trade flows. Markets such as Indonesia, the Philippines and Cambodia, meanwhile, are still at a stage where local processing capacity development and demand for imported aluminum billet are growing simultaneously. Since March 2026, the escalation of geopolitical conflicts in the Middle East has caused significant disruption to the global aluminum supply chain. On the one hand, uncertainty over the supply of primary aluminum and aluminum processed products from the Middle East has increased, pushing up procurement interest in primary aluminum, aluminum billet and secondary aluminum resources across Asian markets outside China. On the other hand, fluctuations in crude oil prices and ocean freight costs have further lifted regional aluminum processing and trading costs. Against this backdrop, LME aluminum prices, Asian regional premiums and Southeast Asian local aluminum billet processing fees have all fluctuated to varying degrees. At the same time, changes in the SHFE/LME price ratio have periodically affected the export arbitrage window for Chinese aluminum processed products. When overseas aluminum prices are stronger than domestic prices and export margins improve, Chinese aluminum processed products and some processing-trade resources show greater willingness to flow into the Southeast Asian market, creating certain disruptions to local billet supply-demand dynamics and quotations. When the price spread narrows, however, regional pricing returns to a framework driven jointly by local supply, imports from the Middle East and other overseas resources. Trade Flows From the perspective of export destinations, the flow of Southeast Asian products under HS760120 is relatively concentrated. In 2025, the top ten export destinations for Southeast Asian HS760120 products totaled around 1.2695 million mt, accounting for approximately 93.3% of total Southeast Asian exports. China was the largest destination, with full-year exports of around 602,100 mt, accounting for approximately 44.3%. Japan, Vietnam and India followed, with around 149,300 mt, 143,500 mt and 111,700 mt respectively, accounting for approximately 11.0%, 10.5% and 8.2%. It should be noted that HS760120 includes primary aluminum alloy ingots, secondary aluminum alloy ingots, other aluminum alloy billets and some cast aluminum alloy products. Therefore, this data mainly serves as a reference for observing trade flows of unwrought aluminum alloys and aluminum alloy billets in Southeast Asia, and cannot be directly equated with 6063 aluminum billet export volumes. Entering 2026, affected by the escalation of the Middle East conflict, uncertainty in the global supply chain for primary aluminum and aluminum processed products increased, and trade flows of aluminum raw materials and aluminum billets in Asia saw certain adjustments. Data shows that total Southeast Asian HS760120 exports fell to around 88,800 mt in February 2026, before rebounding to around 110,700 mt in March and further increasing to around 116,600 mt in April. From February to April, cumulative growth reached approximately 31.2%. In terms of destination changes, China remained the largest export destination, although exports to China declined in April compared with March. India, South Korea, Taiwan, China and Japan showed more obvious increases from March to April. Among them, exports to India rose from around 8,200 mt in February to around 15,700 mt in April; exports to South Korea increased from around 2,400 mt in February to around 10,000 mt in April; exports to Taiwan, China climbed from around 1,500 mt in February to around 4,100 mt in April; while exports to Japan recovered to around 13,700 mt in April. Overall, the rebound in Southeast Asian HS760120 exports from February to April 2026 reflected, on the one hand, the gradual recovery of regional trade after the Chinese New Year holiday. On the other hand, it may also have been related to Asian buyers increasing procurement of Southeast Asian regional resources and supplementing alternative supply sources after the Middle East conflict raised supply risks for overseas primary aluminum, aluminum billet and secondary aluminum. Considering that China, India, Japan, South Korea and Taiwan, China are all important aluminum processing and consumption markets in Asia, the increase in Southeast Asian product flows to these markets indicates that regional unwrought aluminum alloys and aluminum alloy billets have played a certain supplementary and balancing role in trade during periods of supply chain disruption. For the 6063 aluminum billet market, this trend cannot be directly equated with changes in 6063 aluminum billet exports, but it can serve as an important reference for assessing the circulation activity of aluminum billets and aluminum alloy raw materials in Southeast Asia, regional substitution demand and fluctuations in processing fees. Market and Price Analysis With the continued expansion of aluminum processing and downstream enterprises in Southeast Asia, the situation of 6063 aluminum billet differs across countries due to variations in processing levels and downstream demand. Overall, Malaysia and Thailand are the main aluminum billet producing countries in the region and also have certain local consumption capacity. Vietnam’s aluminum processing capacity is growing rapidly, but some local quotations are still mainly for non-homogenized cast billets. Markets such as Cambodia and the Philippines remain at a stage where local processing capacity development coexists with demand for imported aluminum billet. In terms of homogenization status, mainstream 6063 aluminum billet quotations in Malaysia and Thailand usually already include homogenization treatment, and the relevant homogenization cost is mostly included in the aluminum billet processing fee quoted by producers. A small number of non-homogenized 6063 aluminum billet quotations also exist in the Thai market, which can be used to observe the basic processing cost of cast billets. The situation in Vietnam is different. As some enterprises mainly quote non-homogenized cast billets, the apparent processing fee for 6063 aluminum billet is usually around $50-100/mt lower than homogenized quotations in Malaysia and Thailand. Aluminum billet homogenization is an important heat-treatment process in the production of 6063 aluminum billet. It usually refers to placing cast aluminum billets into a homogenizing furnace for heating, holding and cooling treatment, so that the internal composition distribution of the billet becomes more uniform and microstructural segregation formed during casting is improved. For 6063 aluminum billet, homogenization helps improve stability in the subsequent extrusion process, reduce extrusion cracking, surface defects and performance fluctuations, and improve the surface quality and yield of extruded profiles. Therefore, in the aluminum extrusion value chain, homogenized aluminum billet generally has higher use value than non-homogenized cast billet. According to SMM market research, since March 2026, under the influence of factors such as the escalation of Middle East geopolitical conflicts, tighter supply of overseas primary aluminum and aluminum billet resources, and fluctuations in energy and ocean freight costs, 6063 aluminum billet processing fees in major Southeast Asian countries rose to varying degrees. Among them, processing fees for homogenized 6063 aluminum billet in Malaysia and Thailand once increased from the previous $200-250/mt to $250-300/mt, with some high-end quotations even exceeding $300/mt during the peak period. As the Middle East situation eased periodically in mid-June, 6063 aluminum billet processing fees in Malaysia and Thailand declined. At present, mainstream 6063 aluminum billet processing fees in Malaysia have stabilized around $250/mt, and mainstream processing fees for homogenized aluminum billet in Thailand have also stabilized around $250/mt. However, due to differences in raw material structure, product status and quotation basis among enterprises, processing fees still show a wide range. In Thailand, some 6063 aluminum billet processing fees have fallen to as low as around $100-150/mt. In Vietnam, from March to June, 6063 aluminum billet processing fees rose from the previous $150-200/mt to $200-250/mt, before falling back to around $200/mt in mid-June. In addition, from the perspective of the imported aluminum billet arrival market, from May to June, SMM learned that CIF Thailand and Malaysia 6063 aluminum billet premiums/discounts were mostly around a premium of $100/mt, while some low-priced resources even fell to a discount of around $100/mt. These resources were mainly 6063 aluminum billets processed in China under processing trade and then re-exported to the Southeast Asian market. Amid cost advantages and an increase in cargo inflows at certain stages, these resources exerted some impact on the local aluminum billet market in Southeast Asia. From March to April, affected by Middle East geopolitical conflicts, uncertainty over some Middle Eastern aluminum supply increased. Asian buyers in India, Japan, South Korea and Taiwan, China showed higher interest in Southeast Asian aluminum billets and related aluminum alloy resources, driving some Southeast Asian aluminum billet resources to flow out of the region and supporting stronger regional quotations. However, entering May and June, as Chinese aluminum billets flowed into markets such as Thailand and Malaysia through processing trade and re-export channels, competition pressure faced by local Southeast Asian aluminum billet plants increased. SMM research shows that sales pressure for some 6063 aluminum billet producers in Malaysia and Thailand has increased compared with earlier levels, and low-priced imported arrival resources have put certain downward pressure on local ex-works processing fees and the transaction price center. Outlook for Southeast Asian Aluminum Processing Looking ahead, the Southeast Asian 6063 aluminum billet market will continue to evolve around regional processing capacity expansion, import substitution, changes in raw material structure and overseas low-carbon requirements. In the short term, Malaysia, Thailand and Vietnam will remain the core markets for 6063 aluminum billet production and consumption in Southeast Asia. Malaysia and Thailand have relatively mature local billet casting and homogenization capacity, and their pricing systems are closer to a quotation logic based on “LME + regional premium + homogenized processing fee.” Vietnam, meanwhile, still has room for growth in aluminum billet demand as aluminum extrusion and downstream processing capacity improves, but the quotation basis for homogenized and non-homogenized products still needs to be further differentiated. Although local sample coverage in markets such as Indonesia, the Philippines and Cambodia remains limited at present, with the advancement of local aluminum processing projects, future demand for imported aluminum billet, secondary aluminum billet and intra-regional trade flows will remain worth monitoring. In the medium to long term, CBAM and overseas customers’ low-carbon procurement requirements may further drive segmentation in the price system of the Southeast Asian aluminum value chain. For the Southeast Asian aluminum billet market, the impact of CBAM may not necessarily be directly reflected through large-scale exports of aluminum billet itself to Europe, but may instead be transmitted through the export value chain of aluminum profiles, window and door profiles, industrial profiles and other deep-processed products. In the future, when European customers procure aluminum processed products from Southeast Asia, they may pay greater attention to raw material sources, the ratio of primary aluminum, in-house new scrap and aluminum scrap, carbon emission data during production, supply chain traceability and third-party verification capability. Against this backdrop, enterprises with stable homogenization capacity, clear raw material structures, the ability to provide emissions data and low-carbon material options may gain stronger advantages in securing export orders and price negotiations. From the perspective of the price system, CBAM may not immediately drive a one-sided increase in Southeast Asian 6063 aluminum billet processing fees, but it will raise market requirements for differentiating “product status” and “raw material attributes.” In the future, price spreads between liquid aluminum direct-cast billets, remelted aluminum ingot billets and remelted aluminum scrap billets, price spreads between homogenized and non-homogenized aluminum billets, and differences between CIF imported aluminum billet premiums and local ex-works processing fees are all expected to become key areas of market attention. As the aluminum processing industry in Southeast Asia continues to expand, the 6063 aluminum billet market may gradually develop from relatively broad trade quotations in the past toward a more segmented price system differentiated by country, alloy grade, homogenization status, raw material attribute and trade term. SMM Price Points Against the backdrop of regional processing expansion and low-carbon trends, Southeast Asian 6063 aluminum billet processing fees have gradually become one of the key price indicators followed by the market. To help enterprises better track price changes in the Southeast Asian 6063 aluminum billet market, SMM, after market research and improvement of its pricing methodology, will add a series of Southeast Asian 6063 aluminum billet processing fee, calculated reference price and CIF premium/discount price points starting from 3rd July 2026 (Friday) onward for market reference. The Southeast Asian 6063 Aluminum Billet Premium price points will be updated on a weekly basis every Friday at 12:00 noon Kuala Lumpur time, Malaysia, which is the same as Beijing time, GMT+8. Due to differences in settlement methods among enterprises, the full aluminum billet price may vary. For reference, it can be estimated using the following formula: 【LME Official Cash Settlement Price + Quarterly MJP + 6063 Aluminum Billet Processing Fee】. Details of the relevant price points are as follows: Cambodia 6063 Aluminum Billet (Homogenized) Premium, ex-works Cambodia, USD/tonne Malaysia 6063 Aluminum Billet (Homogenized) Premium, ex-works Malaysia, USD/tonne Thailand 6063 Aluminum Billet (Homogenized) Premium, ex-works Thailand, USD/tonne Thailand 6063 Aluminum Billet (Non-homogenized) Premium, ex-works Thailand, USD/tonne Vietnam 6063 Aluminum Billet (Non-homogenized) Premium, ex-works Vietnam, USD/tonne The SMM Southeast Asian 6063 Aluminum Billet price points will be updated on a daily basis every working day at 12:00 noon Kuala Lumpur time, Malaysia, which is the same as Beijing time, GMT+8. The SMM calculated reference price will be derived using the formula: 【LME Official Cash Settlement Price (D-1) + Quarterly MJP + Latest 6063 Aluminum Billet Processing Fee】. Based on this, SMM will publish low-end, high-end and average calculated reference prices. Details of the relevant price points are as follows: SMM Cambodia 6063 Aluminum Billet (Homogenized), ex-works Cambodia, USD/tonne SMM Malaysia 6063 Aluminum Billet (Homogenized), ex-works Malaysia, USD/tonne SMM Thailand 6063 Aluminum Billet (Homogenized), ex-works Thailand, USD/tonne SMM Thailand 6063 Aluminum Billet (Non-homogenized), ex-works Thailand, USD/tonne SMM Vietnam 6063 Aluminum Billet (Non-homogenized), ex-works Vietnam, USD/tonne At the same time, to provide a reference comparison for the Southeast Asian 6063 aluminum billet processing and trading market, SMM will also launch CIF Southeast Asia 6063 Aluminum Billet Premium price points for market reference. The CIF Southeast Asia 6063 aluminum billet premium/discount price points will be updated on a weekly basis every Friday at 12:00 noon Kuala Lumpur time, Malaysia, which is the same as Beijing time, GMT+8. Due to differences in settlement methods among enterprises, the full imported aluminum billet price may vary. For reference, it can be settled using the following formula: 【LME Official Cash Settlement Price + Quarterly MJP + 6063 Aluminum Billet Premium/Discount】. Details of the relevant price points are as follows: CIF Thailand 6063 Aluminum Billet (Non-homogenized) Premium Summary Overall, the Southeast Asian 6063 aluminum billet market is currently at a stage where regional processing capacity expansion, trade flow adjustments and price system segmentation are taking place simultaneously. In the short term, Middle East geopolitical conflicts, changes in overseas primary aluminum and aluminum billet supply, and fluctuations in energy and ocean freight costs will continue to affect Southeast Asian aluminum billet processing fees and import premiums/discounts. At the same time, changes in the SHFE/LME price ratio will also continue to periodically affect the willingness of Chinese aluminum processed products and related aluminum billet resources to flow into the Southeast Asian market. From the perspective of market structure, Malaysia, Thailand and Vietnam remain the core markets for 6063 aluminum billet production, consumption and trade circulation in Southeast Asia. Among them, Malaysia and Thailand have relatively mature pricing systems for homogenized aluminum billet, while Vietnam still requires separate differentiation in price basis due to the relatively high share of non-homogenized cast billet quotations. Going forward, as local processing capacity develops in markets such as Indonesia, the Philippines and Cambodia, changes in regional imported aluminum billet, secondary aluminum billet and local processing fees will also become areas worth continuous tracking. In the medium to long term, CBAM and overseas low-carbon procurement requirements will further increase the importance attached by the Southeast Asian aluminum processing value chain to raw material structure, homogenization capability, carbon emission data and supply chain traceability. Although CBAM may not necessarily drive an immediate one-sided increase in 6063 aluminum billet processing fees, it will prompt the market to more clearly distinguish between different product bases, including liquid aluminum direct-cast billets, remelted aluminum ingot billets, remelted aluminum scrap billets, as well as homogenized and non-homogenized products. Against this backdrop, the launch of SMM Southeast Asia 6063 aluminum billet processing fee, calculated reference price and CIF premium/discount price points will help the market more clearly track changes in regional aluminum billet costs, import substitution space, trade flow adjustments and price differentiation trends under the low-carbon transition.

According to SMM statistics, as of June 18, the days of in-factory aluminum rod inventories in China recorded 1.82 days, down 0.84 days from the same period last week (2.66 days on June 12); the inventory ratio fell from 9.28% to 6.87%, a decline of 2.41 percentage points, with inventory levels falling to an extremely low range for the year. During the same period, the comprehensive operating rate of leading aluminum rod enterprises recorded 83.40%, up 1.3 percentage points WoW, climbing for the fourth consecutive week and hitting a new high for the year.

General Administration of Customs data showed that aluminum scrap imports in May 2026 stood at approximately 152,000 mt, down 11.1% MoM from 171,000 mt in April and also below the 160,000 mt recorded in May 2025, initially establishing a pullback trend in imports this year.

[Weekly Review of Aluminum Scrap and Secondary Aluminum]In May, imports of unwrought aluminum alloy hit a nearly five-year low, while exports surged explosively

[SMM Aluminum Weekly Review: Geopolitical Premium Recedes, Coupled with Hawkish US Fed, Aluminum Prices Fall Under Pressure Both at Home and Abroad]

[Geopolitical easing combined with manufacturing slowdown exert dual suppression, SHFE and LME aluminum prices plunge significantly] SMM maintains its forecast that inventory will drop to around 1.28 million mt by late June, and may further approach 1.2 million mt by the end of June or early July, providing some support for aluminum prices. However, the pressure from high domestic inventory remains relatively evident, and coupled with the currently dominant bearish macro sentiment in the market, domestic aluminum prices are expected to mainly be in the doldrums with adjustments in the short term.

[SMM Aluminum Flash] According to multiple media reports, following the signing of a memorandum of understanding between the U.S. and Iran, prices in the international energy and metals markets fluctuated significantly. WTI crude oil futures fell by over 5%, while European natural gas prices plunged more than 10%. In the metals market, LME aluminum prices declined during the evening session, dropping over 5% to $3,357/mt. China's most-traded SHFE aluminum contract was also affected, with open interest rising by over 14,000 lots and the price falling by as much as 2% to 23,730 yuan/mt. Market concerns now center on persistently high operating aluminum capacity in China, while new and resumed aluminum capacity outside China will also put pressure on LME aluminum prices.

\LME aluminium prices have retreated steadily from their late-May peak, falling from nearly $3,680 per metric ton to around $3,480 per metric ton. More notably, the LME aluminium Cash-3M spread narrowed sharply over just one week, dropping from a cash premium of $104.56 per metric ton on June 1 to $15.17 per metric ton on June 9, a loss of nearly $90 per metric ton. This marks the steepest contraction in the backwardation structure since the outbreak of the Middle East conflict.

In May, the global aluminum market continued the core pattern of LME outperforming SHFE with divergent trends. The most-traded SHFE aluminum contract moved sideways in the doldrums, while LME aluminum maintained strength supported by low inventory and geopolitical premiums, with both seeing slight corrections at month-end. This month's market-driving logic revolved around Middle East ceasefire negotiations, rising expectations for US Fed interest rate hikes, divergence in inventory in and outside China, and accelerating export transmission, further highlighting the divergence between domestic and overseas aluminum price trends. The SHFE/LME aluminum price ratio declined further from the April average of 7.03 to the May average of 6.66, with the inverted price spread between domestic and overseas markets widening, as the trend of overseas aluminum prices outperforming SHFE aluminum continued to deepen. May Aluminum Price Review: Similar Pace but Intensifying Divergence in Strength China · The Most-Traded SHFE Aluminum Contract The contract opened low at around 24,800 yuan/mt at the beginning of the month. After the holiday, it pulled back rapidly due to high domestic inventory and weaker-than-expected downstream demand, hitting the monthly low of 24,075 yuan/mt on May 7. In mid-month, it rebounded to 24,620 yuan/mt driven by positive signals from the China-US meeting. In the latter part of the month, it pulled back to 24,375 yuan/mt as ceasefire expectations heated up combined with off-season drag. Ex-China · LME Aluminum The contract opened at $3,480/mt at the beginning of the month. In mid-month, it rallied to $3,680/mt (the monthly high and a four-year high) supported by supply disruptions and continued destocking. At month-end, it corrected to $3,628/mt, impacted by news that a US-Iran ceasefire agreement was 95% reached. In terms of price-driving factors, geopolitics remained the core common variable for aluminum prices in and outside China this month. Production cuts in the Middle East and shipping disruptions through the Strait of Hormuz continued to provide a shortage premium for LME aluminum. The price divergence stemmed from dual differences in macro policy and fundamentals—slow destocking from high inventory levels in China constrained SHFE aluminum's rebound space, while historically low inventory and a high premium structure outside China provided strong support for LME aluminum prices. Core Inventory Indicators: Extreme Divergence Between Domestic and Overseas Inventory with Contrasting Destocking Pace China · Gradual Decline from High Levels, Pressure Persists Social inventory began to pull back from the high of 1.456 million mt at the beginning of May, reaching approximately 1.401 million mt by month-end, with only about 55,000 mt destocked over the entire month. The destocking pace was slow, with inventory remaining at a near six-year high for the same period. SHFE warrants recorded 485,500 mt on May 29, still showing inventory buildup on a weekly basis, confirming ample spot supply in China. Ex-China · 20-Year Low, Structural Deficit Becomes Evident LME total inventory declined from approximately 363,000 mt at the beginning of the month to 338,000 mt at month-end, a decrease of approximately 25,000 mt over the month, with inventory levels at historically extreme lows. LME aluminum Cash-3M premiums closed at $92.53/mt at month-end, widening significantly from approximately $29/mt at the beginning of the month. Japan's Q3 spot premiums rose, premiums in Europe and the US continued to climb, and the rigid supply gap outside China provided sustained and strong support for LME aluminum. Macro and Fundamentals Intertwined: Geopolitical Dynamics and Rate Hike Expectations Dominating Sentiment Geopolitical Variables: Repeated Ceasefire Negotiations At the beginning of the month, the US military launched airstrikes on southern Iran, with military frictions between the two sides recurring. Shipping through the Strait of Hormuz remained disrupted, and geopolitical risk premiums climbed. At month-end, a US-Iran framework agreement was reportedly 95% complete, and a 60-day temporary ceasefire draft emerged. Expectations for the resumption of strait navigation warmed, and geopolitical premiums converged significantly. On the morning of May 28, both SHFE aluminum and LME aluminum plunged. US Fed Expectations: Hawkish Pressure US April CPI came in at 3.4% YoY, with core PCE reaching 2.8%. Inflation stickiness, compounded by Middle East conflicts pushing oil prices above $90/barrel, led hawkish US Fed officials to release signals of "raising rates at any time." Market expectations for a 25bp rate hike within the year surged abruptly, and a stronger US dollar continued to weigh on the demand outlook for non-ferrous metals. IV. Current Core Market Trades and Arbitrage Strategies (Including Divergence in Capital Behavior) Based on the current SHFE and LME fundamentals, inventory pace, and LME curve structure, the aluminum market overall exhibits a cautious unidirectional and arbitrage-dominated trading pattern. In particular, SHFE-LME cross-market reverse arbitrage (selling SHFE and buying LME) has become the core market play. Capital behavior among market participants has shown clear divergence, mainly falling into three categories: 1. Early-positioning capital (light long positions in reverse arbitrage) Some trading capital has positioned reverse arbitrage ahead of time based on the logic that China's inventory inflection point has already appeared. The core expectation of such capital is that as China's inventory gradually enters a destocking channel, accelerated destocking is highly likely to follow, rapidly easing China's high inventory pressure. The weak SHFE aluminum pattern is expected to be corrected, and the depressed SHFE-LME ratio has clear room for recovery, warranting early light positioning to capture the ratio rebound. 2. Wait-and-see cautious capital (staying on the sidelines for now) The majority of market capital has maintained a wait-and-see stance, with two core concerns: First, China is currently only experiencing slow destocking, and its sustainability is questionable during the off-season, as inventory pressure has not been substantially cleared and SHFE aluminum lacks sufficient rebound momentum. Second, LME is currently in a deep backwardation structure, making roll and extension costs for LME aluminum bulls extremely high, with significant cost erosion and high open interest pressure for holding long-term reverse arbitrage positions. Combined with the entrenched short-term pattern of LME outperforming SHFE, the price spread still risks further widening. Therefore, this segment of capital has chosen to wait for confirmed signals of accelerated destocking in China before entering the market. 3. Previously trapped capital (open interest under pressure, caught in a dilemma) Some positions that were established earlier to set up SHFE-LME reverse arbitrage are currently slightly underwater. Recently, LME has been continuously driven higher by geopolitical risks while SHFE has been range-bound and weak, with the divergence between LME outperforms SHFE intensifying, causing the ratio to remain persistently low and unrealized losses to emerge. Meanwhile, LME contango fees have risen sharply, long positions carrying costs continue to increase, and the pressure of holding trapped positions has further intensified. In the short term, these positions are caught in a dilemma, highly dependent on the subsequent pace of China's inventory destocking to restore the spread. Overall, the sole core inflection variable for SHFE-LME reverse arbitrage is currently the pace of domestic inventory destocking. Once weekly inventory drawdowns continue to widen and accelerated destocking is confirmed, it will directly drive a reversal in three types of capital behavior: sidelined capital entering the market en masse, trapped positions getting unwound, and early-entry positions realizing profits, triggering a rapid recovery in the ratio. Looking ahead to June, the aluminum market's core focus centers on three dimensions: first, whether the US-Iran ceasefire agreement can be formally signed and the pace of resuming navigation through the Strait of Hormuz, which will directly determine the extent of geopolitical premium convergence — if the agreement materializes and Middle Eastern aluminum supply gradually recovers, the prior support logic for LME aluminum faces correction risk; second, whether domestic inventory destocking can accelerate — continued export growth and import suppression will keep driving destocking, and the magnitude of destocking will determine SHFE aluminum's upside elasticity. The US Fed's June FOMC meeting is highly likely to keep rates unchanged, but a hawkish tone and sticky inflation will continue to suppress interest rate cut expectations, with a stronger US dollar maintaining sustained pressure on non-ferrous metals. Overall, the aluminum market in June is expected to continue the pattern where LME outperforms SHFE, though the degree of divergence is likely to narrow. LME aluminum is expected to hover at highs amid the tug-of-war between geopolitical premium convergence and rigid ex-China supply deficits, with downside room constrained by low inventory and high premiums. [ Data source disclaimer: Data other than publicly available information is derived from public information, market communication, and SMM's internal database models, processed by SMM for reference only and does not constitute decision-making advice. ] Data source: SMM