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(Repeats Thursday column without change. The opinions expressed here are those of the author, a columnist for Reuters)
By Andy Home
LONDON, Oct 6 (Reuters) - Japanese aluminium buyers will pay a premium of $75 per tonne over the London Metal Exchange (LME) cash price for their shipments in the fourth quarter of this year.
The settlement with producers, which will serve as the benchmark for Asian physical aluminium markets, marks a near 20-percent decline from the previous quarterly premium of $90-93 per tonne and is the lowest level since the third quarter of 2009.
This is the continuing unwind of the premium bubble that grew out of the load-out queues at LME warehouses in Detroit and the Dutch port of Vlissingen.
Japanese users were paying $425 per tonne in the first quarter of 2015, a period which marked the worst of the fracturing of the aluminium price between LME paper and physical premium markets.
We are now in the post-queue world and premiums are returning to their previous function of delineating regional supply and demand dynamics.
Quite evidently, there remains significant oversupply in the aluminium market. Physical premiums everywhere else are also at or near historical lows.
But the tail winds from the queues are still discernible, determining where that oversupply appears.
Graphic on quarterly Japanese aluminium premiums:
Japanese buyers have successfully pushed through such a significant drop in quarterly premiums by arguing that the spot market is even weaker, recently trading as low as $70 per tonne.
There are multiple factors at work in suppressing the Japanese premium right now.
Japanese stocks of aluminium have been trending lower but at 304,200 tonnes at the end of August are still high by historical standards.
Local demand is running at subdued levels, output of rolled products, for example, falling one percent from year-earlier levels in July and August, according to the Japan Aluminium Association.
Freight rates, a key component of physical market premiums, are bombed out.
And both Japan and the wider Asian region are battling against the continued export flow of semi-manufactured products out of China.
Exports may be down around five percent year-on-year but China is still pumping out around 350,000 tonnes per month of products, most of it into other Asian countries, displacing primary metal demand.
Interacting with these drivers is leakage of metal from off-market financing deals, a trade predicated on the structure of the LME forward curve.
A profitable financing trade needs a sufficiently wide contango on the LME to cover the costs of storage.
As of the close of business Wednesday the cash-to-three-months period CMAL0-3 was valued at $8.25 contango.
This time last month it was $19 per tonne and the spread has since flirted with backwardation, a structure that makes it unviable to hold metal, even in the cheapest storage options.
And rewind a year or so and that spread was consistently trading as wide as $40, manna from heaven for aluminium financiers.
Moreover, "tom-next" CMALT-0, the price of rolling a position one day forwards, is experiencing persistent tension. The shortest-dated spread in the LME system flared out to $10 backwardation at times in September and even this morning traded briefly into small backwardation.
The trend is towards tighter LME spreads and when the curve undergoes one of its ever more frequent contractions, finance deals aren't renewed, releasing more metal into both physical and LME markets.
The tail winds from the load-out queues are both acting to tighten those spreads and determine where metal appears back in the LME system.
Graphic on LME stocks by region:
There is still a load-out queue at Vlissingen sheds operated by Access World, the logistics arm of Glencore.
Its direct impact on physical premiums has been broken by the LME's concerted attack on the queue model, a mixture of enforced faster load-out rates and rent relief for those awaiting their delivery slot.
Vlissingen has been for many months the driver of falling headline LME stocks and the accompanying decline in free-float aluminium in the system, the stuff that can be used for physical settlement of positions.
The lower the level of free-float stocks, the greater the potential for spread contractions, particularly in aluminium where the LME's futures banding report shows super-large positions liberally distributed across the next three main prompt dates. <0#LME-FBR>
Every time the spreads contract, there is a reaction in terms of metal being warranted into the LME system.
But this is where the queues also cast a long shadow.
While the Vlissingen queue ruled supreme, metal coming out of finance deals gravitated towards the Dutch port.
But the queue model is no longer profitable and warehouse operators such as Access are wary of taking in more metal for fear of the potential penalties of renewed queue building.
So what has spilled into LME sheds from no-longer-profitable finance deals has washed up elsewhere, particularly in Asia, where it acts to undermine local premiums.
Headline LME stocks have fallen by 755,000 tonnes this year, largely reflecting the 708,475 tonnes outflow from Vlissingen.
Stocks at LME sheds in the U.S. have also fallen to the tune of 168,075 tonnes through the end of September with Metro, the "owner" of the original load-out queue in Detroit, effectively out of the aluminium game.
But those in Asia have risen by 250,700 tonnes with inflows largely concentrated on Singapore and South Korea.
There are no queues in Asia and warehouse operators have even been offering incentives for deliveries.
In many ways the latest lurch lower in the Japanese aluminium premium represents a normalisation of the market after the trials and tribulations of the queue years.
Premiums in Japan and everywhere else are returning to historical norms.
Regional differences are more discernible. The benchmark Asian premium is reflecting particular oversupply in the market which is closest to China, which is to be expected.
But adding to such natural downwards pressure is the adjustment of the market to the LME's post-queue reality, one of diminishing stocks, tightening spreads and the release of more financed metal, particularly into LME warehouses in South Korea and Singapore.
The great premium unwind, in other words, may not be over just yet.
Editing by William Hardy