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Copper prices extended their downward momentum at the start of the trading week, pressured by persistent uncertainty surrounding potential U.S. tariffs on refined copper. The regulatory ambiguity has prompted market participants to scale back bullish bets following a historic rally that had propelled the industrial metal to all-time highs.

The retreat marked copper’s first weekly decline since June, following a steep drop of approximately 5% in a single session late last week. On the London Metal Exchange (LME), three-month benchmark copper closed at $14,238 per metric ton on Friday, ending the week down 1.2%.

The Policy Dilemma: Domestic Output vs. Input Costs

The sell-off underscores the global metals market's acute sensitivity to U.S. trade directives, as the administration of President Donald Trump deliberates whether to levy import duties on refined copper supplies. The administration faces a balance between two competing priorities:

Stimulating Domestic Mining: Tariffs aim to bolster domestic exploration, mining output, and refining capacity within the United States.

Inflating Manufacturing Overhead: Levies risk driving up procurement expenses for domestic industrial producers, directly squeezing margins across manufacturing and assembly operations.

Downstream Supply Chain Exposure

Because refined copper serves as a core electrical conductor across high-growth sectors, the economic impact of import levies extends well beyond metals trading desks:

Power Grids & Clean Energy: Crucial for nationwide grid expansion, high-voltage transmission, and renewable energy infrastructure.

Electric Mobility & AI Data Centers: Essential for electric vehicle (EV) powertrains, charging architecture, and the rapid buildout of power-intensive computing facilities supporting artificial intelligence.

Elevated tariffs threaten to elevate operational costs across downstream manufacturing supply chains that depend on copper as a non-substitutable raw material.