Down almost 10%! Why are ASX copper shares tanking?

The market for the industrial metal has been shaken.

Copper shares are leading the falls on the ASX on Friday, after doubts were raised about the US imposing tariffs on the vital industrial metal.

Two workers working with a large copper coil in a factory.

Image source: Getty Images

Tariffs fears have been boosting prices

The copper price has been hitting record highs recently amid fears the US will impose tariffs in a bid to promote more home-grown mining and production.

Reports indicate that traders have been importing copper into the US and building up stockpiles ahead of the rumoured tariffs, helping push prices higher.

But a report from Reuters overnight suggested that the White House was still weighing up the higher costs tariffs could impose on the US' manufacturing sector against the benefits of encouraging more domestic mining.

Reuters quoted a White House official as saying all options remained on the table.

They said:

The administration continues to ​evaluate all options to reshore copper and other critical manufacturing back to the United States.

This has been interpreted by market watchers as suggesting tariffs may not be imposed, leading to sharp falls in the share prices of copper miners.

Among the Australian-listed producers, shares in Develop Global Ltd (ASX: DVP) fell 9.6%, Capstone Copper Corp (ASX: CSC) fell 7.8%, and Sandfire Resources Ltd (ASX: SFR) fell 6.7%.

Shares in BHP Group Ltd (ASX: BHP), which now derives more than half of its earnings from copper, fell 3.7%, while Rio Tinto Ltd (ASX: RIO) shares were off 2.7%.

"No tariff" decision could ease prices

Morgan Stanley said the Reuters report gave slightly more weight to a "no tariff" scenario.  

They added:

Today's article does not constitute a decision but it arguably has driven the market to give slightly more weight to the "no tariff" scenario than before. Copper prices are up around 15% YTD with both benchmarks hitting all time highs in recent days, with much of this year's strength arguably attributable to strong US import demand ahead of potential tariffs. We estimate US excess imports have now exceeded 450 kt YTD, or 2.5-3% of global refined copper demand when annualised. However, if those imports were to slow down, the copper market would feel substantially looser in our view.

Morgan Stanley said the proposed tariffs would be 15% on refined copper from the start of January 2027, potentially rising to 30% in 2028.

The Reuters article confirmed that an update report on the US copper market, due on June 30, had been given to the US President.

Copper demand is expected to remain strong in coming years as the electrification of the economy gains pace.

Motley Fool contributor Cameron England has no position in any of the stocks mentioned. The Motley Fool Australia's parent company Motley Fool Holdings Inc. has no position in any of the stocks mentioned. The Motley Fool Australia has recommended BHP Group. The Motley Fool has a disclosure policy. This article contains general investment advice only (under AFSL 400691). Authorised by Scott Phillips.

More on Resources Shares

Woman on her phone with a view of the Sydney Harbour Bridge in the background.
Resources Shares

Champion Iron posts $403.9 million Q2 FY2027 revenue in preliminary results

Champion Iron posted Q2 FY2027 revenue of $403.9 million and sold 4.5 million tonnes of iron ore concentrate.

Read more »

Three satisfied miners with their arms crossed looking at the camera proudly.
Resources Shares

Own ASX mining shares? Official forecasts show commodity prices peaking in FY27

Here are the annual average price predictions for iron ore, copper, gold, lithium, and others.

Read more »

Mining vehicle at a mine site.
Resources Shares

Global miner Glencore has just joined the ASX. So what's it worth?

Canaccord Genuity says this miner's shares could head north.

Read more »

Two people wearing hard hats talking with each other at a mine site, with two workers in the background.
Resources Shares

Are Rio Tinto shares a buy following its Q3 update?

I take a closer look at what the miner's latest operating progress means for investors.

Read more »

Cheerful businessman with a mining hat on the table sitting back with his arms behind his head while looking at his laptop's screen.
Resources Shares

Evolution Mining lifts cash flow and holds full year guidance in September quarter

Evolution Mining maintained full year guidance and delivered strong cash flow in the September 2026 quarter.

Read more »

Two miners laughing and having fun while using smart phone during their coffee break.
Resources Shares

Rio Tinto provides Q3 2026 production update

Rio Tinto announced robust Q3 2026 production led by copper and iron ore growth with stable outlook.

Read more »

Three business people stand on platforms in the desert and look out through telescopes.
Resources Shares

How much must I invest in Fortescue shares to earn a $1,000 passive income in 2027?

Can owning Fortescue shares unlock good dividend income?

Read more »

Gold nugget in a miner's hand amid black rocks.
Resources Shares

Evolution Mining vs Northern Star Resources: Which gold stock is better for a $1,000 investment?

Evolution Mining and Northern Star Resources go head-to-head — see which gold stock I’d back with $1,000 today.

Read more »