(The opinions expressed here are those of the author, a

columnist for Reuters)

By Andy Home

LONDON, June 10 (Reuters) - Nickel's early-year rally is a

collective bet that Indonesia's multi-year production surge is

finally abating, allowing the market to rebalance after four

consecutive years of oversupply.

But a growing mountain of surplus metal accumulating in

London Metal Exchange (LME) and Shanghai Futures Exchange (ShFE)

warehouses is a reminder that this could be a slow-fuse process.

Combined exchange inventory stands at 468,600 metric tons,

the largest stock overhang since 2015 and equivalent to around

six weeks of global usage.

The rate of growth has slowed as LME-registered stocks

plateau out. But the rise in Shanghai inventory has been

simultaneously accelerating, suggesting the refined nickel

surplus is now migrating eastwards.

PRODUCTION HITS IN THE WEST

LME nickel stocks, including off-warrant inventory, rose for

nine straight months between June last year and March, when they

topped out just below the 400,000-metric-ton level.

They have since edged 20,000 tons lower. Although metal is

still arriving at LME warehouses in sizeable clips, warrant

cancellations and load-out rates have also picked up in recent

weeks, signalling a stronger draw on metal from the physical

market.

The Western supply chain, or what's left of it after

Indonesia's Chinese-backed supply tsunami, is absorbing two

unexpected hits to production.

The Ambatovy mine in Madagascar has been suspended since

February due to damage from a cyclone.

The mine, which is being taken over by a consortium led by

Jason Kluk, former head of nickel trading at Glencore ( GLCNF ),

produced 28,000 tons of finished nickel products in 2024.

Just as Ambatovy is due to return at the end of this month,

Sherritt International's ( SHERF ) Fort Saskatchewan refinery may

run out of feed.

The Canadian producer has suspended direct participation in

its Cuban mining joint venture after the latest salvo of U.S.

sanctions on the country.

The mines are integrated with Sherritt's ( SHERF ) nickel plant in

Alberta and the company warned last month it expected its raw

materials inventory to last only to the middle of June.

Sherritt ( SHERF ) expected to produce 26,000-28,000 tons of finished

nickel this year but the outlook is now highly uncertain. The

sanctions have upended Sherritt's ( SHERF ) nickel business and the

company has just signed a term sheet to sell a majority stake to

Gillon Capital.

SURPLUS MOVES TO CHINA

While the nickel stocks build in the West shows signs of

exhaustion, Chinese inventory is rapidly climbing.

Shanghai exchange stocks have almost doubled since the start

of the year and now total 87,671 tons, which is the highest

level since 2017. The rise has been relentless with no

discernible seasonal impact from the new year holiday period.

There may be a lot more sitting in government warehouses.

China's imports of refined metal surprised to the upside

last year and they have remained robust so far this year.

The country imported 231,000 tons of nickel in 2025, the

highest tally in four years, according to the World Bureau of

Metal Statistics, which collates official customs data.

Yet Chinese nickel producers also exported a record 171,000

tons of metal, mainly to LME warehouses in Asia.

The two-way flow makes little market sense unless imports

included purchases by government stockpile managers.

Macquarie analysts think governments absorbed around 150,000

tons of nickel last year as they look to build reserves of what

most deem to be a critical mineral. The bank expects more

strategic buying this year.

China isn't explicitly referenced but the country has long

been a strategic stockpiler of nickel and soaking up more metal

at a time of low prices is a tried-and-tested policy.

SLOW REBALANCING

China's import surge has rolled into this year. Inbound

volumes of refined nickel jumped by 56% year-on-year to 94,000

tons in the January to April period, while exports fell to just

9,400 tons.

Combined with China's own expanded smelter capacity, running

off Indonesian raw materials, it's little surprise that domestic

inventory is rising and Shanghai prices are underperforming

those in London.

The price gap should create a renewed incentive for exports

but so far that's not happening.

It's not as if the West needs more metal anyway despite the

disruption in Madagascar and Canada.

While Indonesian production may well fall this year due to a

combination of government mining restrictions and lack of sulfur

for processing, it's clearly going to take time before that

becomes manifest in the refined metal segment of the market.

Nickel's rebalancig act could be a long-drawn-out affair.

(The opinions expressed here are those of Andy Home, a

columnist for Reuters.)

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(Writing by Andy Home;

Editing by Marguerita Choy)