Antofagasta plc, the FTSE 100 copper miner with all of its producing assets in Chile, is trading close to record highs as investors lean into the global copper story – electrification, AI data centres and grid upgrades – while watching costs, capex and Chilean risk very closely.

This article pulls together the latest price moves, company results, broker forecasts and copper market outlooks available up to 2 December 2025, to give a structured view of where Antofagasta stock stands now and what could drive it into 2026.

Disclaimer: This article is for information and general commentary only. It is not investment advice or a recommendation to buy or sell any security.

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Where the Antofagasta share price stands on 2 December 2025

On the morning of 2 December 2025, Antofagasta’s own investor website showed the share price fluctuating around 2,805–2,820p, with a modest intraday decline of around 0.5% at 10:22 UK time after a strong run the previous day. ^[1]

Key near-term context:

• On Monday 1 December, the share was among the top FTSE 100 risers, trading around 2,833p, up roughly 2.5% intraday as copper prices moved higher and the broader index drifted lower. ^[2]
• Over the last 12 months the stock has traded between roughly 1,278p and 2,877p, meaning it currently sits well over 100% above its 52‑week low and close to its record high zone. ^[3]

Short‑term technical commentary from trading site StockInvest notes:

• Close on 1 December 2025 at 2,820p, up 2.25% on the day.
• 52‑week range 1,278–2,877p and a 30‑day range of 2,496–2,838p, underscoring elevated volatility near the top of the range.
• Their model currently flags the stock as short‑term “sell” on overbought technicals, with an expectation of a possible pullback from these levels. ^[4]

From a valuation angle, a recent analyst consensus snapshot compiled by DirectorsTalk at the end of November showed:

• Average 12‑month target price: ~2,631.6p
• Share price at that time: ~2,577p
• Implied upside: just over 2% then – but now the stock is trading above that average target. ^[5]

The same data set pointed to:

• Trailing P/E: ~23x
• Forward P/E: ~16.5x
• Dividend yield: ~1.2%, with a payout ratio of about 29%. ^[6]

In other words: Antofagasta is being valued as a high‑quality growth copper producer rather than a deep‑value cyclical.

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Earnings momentum: H1 2025 results were exceptionally strong

Antofagasta’s 2025 Half Year Results, published on 14 August 2025, marked one of its strongest interim performances in years. ^[7]

Headline numbers for the six months to 30 June 2025:

• Revenue: rose 29% year‑on‑year to $3.80bn (from $2.96bn).
• EBITDA: jumped 60% to $2.23bn (from $1.39bn).
• EBITDA margin: expanded from 47.2% to 58.8%, putting Antofagasta at the upper end of global pure‑play copper producers by margin. ^[8]
• Profit before tax: up 63% to $1.16bn. ^[9]
• Underlying EPS: more than doubled to 47.4 cents (from 22.4 cents). ^[10]
• Operating cash flow: up 22% to $1.81bn. ^[11]
• Interim dividend:16.6 cents per share, up 110% versus 2024’s 7.9 cents, keeping payout consistent with their capital allocation framework. ^[12]

Operational drivers:

• H1 2025 copper production reached 314,900 tonnes, up 11% year‑on‑year, mainly from higher output at the big concentrators (Los Pelambres and Centinela Concentrates). ^[13]
• Cash costs before by‑product credits fell 12% to $2.32/lb, while net cash costs dropped 32% to $1.32/lb, thanks to higher volumes and stronger by‑product contributions. ^[14]

Reuters summarised the half‑year as a roughly 60% surge in core earnings, highlighting the company’s outperformance versus other FTSE 100 miners that were reporting weaker results. Analysts at RBC called the numbers unusually “clean”, and the interim dividend more than doubled year‑on‑year. ^[15]

Management reiterated that Antofagasta is on track to deliver over 30% growth in copper output in the medium term, driven primarily by:

• The Centinela Second Concentrator project.
• Growth‑enabling projects at Los Pelambres (pipeline replacement and desalination expansion). ^[16]

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Q3 2025: production steady, costs lower, guidance fine‑tuned

The Q3 2025 Production Report (23 October 2025) confirms that the strong first half was not a fluke. ^[17]

Key Q3 and year‑to‑date figures:

• Q3 copper production:161,800 tonnes, up 1% quarter‑on‑quarter.
• 9M 2025 copper production:476,600 tonnes, 2.8–3% higher than the same period in 2024. ^[18]
• Gold production: 145,000 ounces year‑to‑date, up 22% year‑on‑year, with Q3 gold up 12% quarter‑on‑quarter. ^[19]
• Molybdenum production: 11,400 tonnes in 9M, up 44% year‑on‑year, although Q3 output dipped versus Q2 on lower grades. ^[20]

Costs and guidance:

• Cash costs before by‑product credits in 9M were about $2.35/lb, down around 7% vs 2024. ^[21]
• Net cash costs year‑to‑date:$1.24/lb; in Q3 alone, net cash costs were even lower at $1.07/lb, thanks largely to record by‑product credits of $1.35/lb (driven by higher gold output and favourable pricing). ^[22]

Guidance tweaks:

• 2025 copper production: management now expects to land at the lower end of the original 660,000–700,000 tonne range. ^[23]
• Net cash cost guidance for 2025 has been cut from $1.45–1.65/lb to $1.20–1.30/lb – a meaningful improvement, reflecting very strong by‑product markets and ongoing cost discipline. ^[24]
• 2025 capex guidance has been reduced from $3.9bn to $3.6bn, primarily due to the depreciation of the Chilean peso rather than project cancellations. Citi interprets the lower 2025 capex as partly a deferral into 2026 rather than a fundamental cut. ^[25]
• 2026 copper production guidance has been set at 650,000–700,000 tonnes, still implying robust levels of output despite a tight global copper concentrate market. ^[26]

Project pipeline and labour:

• Major growth projects at Centinela and Los Pelambres remain on track and on budget, including assembly of high‑pressure grinding rolls, progress on desalination facilities and replacement of the concentrate pipeline. ^[27]
• The group has concluded several key three‑year labour agreements at Los Pelambres, Antucoya and Zaldívar, with only one remaining negotiation scheduled in 2025 – reducing near‑term labour disruption risk. ^[28]

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Copper market squeeze: why the macro backdrop matters so much

Antofagasta is effectively a leveraged play on copper, so global copper fundamentals are crucial.

Several recent pieces of research and newsflow paint a consistent picture of a tightening copper market out to 2026:

Treatment charges collapsing, sign of a concentrate shortage

• In June 2025, Reuters reported that some Chinese smelters agreed to process Antofagasta’s copper concentrate at $0 per tonne and 0 cents per pound in treatment and refining charges (TC/RCs), a shocking benchmark that underscores how scarce concentrate has become. ^[29]
• That deal contrasts sharply with the 2025 annual benchmark TC/RCs of $21.25/t and 2.125c/lb that Antofagasta agreed with Jiangxi Copper, as highlighted later by Fastmarkets. ^[30]
• Fastmarkets notes that spot TC indices in Asia are deeply negative, and that 2026 negotiations are likely to be the “toughest year yet”, with traders bidding aggressively for concentrate and smelters relying heavily on by‑product revenues (notably gold and sulfuric acid) just to break even. ^[31]

Forecast concentrate deficits:

• Consultancy estimates cited by Reuters put the global copper concentrate deficit at around 1.1 million tonnes in 2025 and 2.6 million tonnes in 2026. ^[32]
• Fastmarkets panelists expect a 300,000–500,000 tonne deficit in 2026, with mine production not keeping pace with electrification and AI‑driven demand. ^[33]

Price forecasts out to 2026

• Deutsche Bank, in a late‑November outlook, raised its 2026 copper price forecast to $10,600 per tonne, with peak prices expected to exceed $11,000/t in the first half of that year. ^[34]
• The bank expects mine supply to fall in 2025 and increase only about 1% in 2026, reinforcing a market in sustained deficit. ^[35]
• Fastmarkets’ 2026 webinar recap suggests a base‑case range of $10,000–$11,000/t, with bear‑case scenarios around $8,000 and bull cases at $12,000 or higher if disruptions continue and policy shocks (like tariffs) tighten trade flows. ^[36]

Citi’s view, quoted in Reuters’ Q3 coverage, is that Antofagasta’s relatively conservative 2026 production guidance at one of the “best‑run” copper operations is another sign of a supply‑constrained global copper market. ^[37]

All of this matters for Antofagasta because:

• Its costs (especially net cash costs) are now solidly in the lowest third of the cost curve once by‑products are considered. ^[38]
• Its medium‑term growth (+30% output) is timing into a period when multiple analysts expect structural deficits and incentive‑level prices.

If copper holds anywhere near the $10k–$11k/t band, Antofagasta’s margins and cash generation could remain very strong. On the flip side, any macro shock that knocks copper down towards the $8k/t bear‑case would hit earnings hard.

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Broker ratings and valuation snapshot: what are analysts saying?

Recent broker and market‑data snippets provide a mixed but generally constructive picture.

Deutsche Bank

Deutsche Bank’s late‑November copper sector note:

• Maintains “Hold” on Antofagasta.
• Raises the target price from 2,300p to 2,400p. ^[39]

Given that the stock is now around 2,800p, the new DB target implies downside from current levels, signalling that the bank sees much of the copper bull case as already in the price.

Consensus and fundamentals

The DirectorsTalk aggregation shows:

• Consensus target: ~2,632p.
• Current trading: above that consensus, signalling limited short‑term upside in broker models at today’s price. ^[40]
• Forward P/E around 16–17x and EV/EBITDA around 9–10x, measured when the share price was lower than today, suggest the market is happy to pay a growth multiple for high‑margin copper exposure. ^[41]

Short‑term trading services:

• StockInvest currently classifies the stock as a short‑term sell based on overbought technical indicators near the top of its trading channel, even as the medium‑term trend remains positive. ^[42]
• MarketsMojo commentary in late November highlighted multiple intraday surges of 3–5% in the stock, and at least one piece of their templated analysis tagged Antofagasta as a “Strong Buy” within their style‑based framework, though the underlying metrics are paywalled. ^[43]

In summary:
Fundamental brokers seem to see Antofagasta as fully valued to slightly rich at current prices, while momentum‑oriented services still highlight strong trend strength but warn about short‑term overheating.

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ESG, growth projects and long‑term positioning

Antofagasta has been trying to position itself not just as a copper producer, but as a low‑carbon, infrastructure‑ready supplier to the energy transition.

Recent developments include:

• Hydrogen locomotive pilot: In late November, Antofagasta’s transport division FCAB launched Latin America’s first hydrogen‑powered freight locomotive, using hydrogen produced from renewable sources in a hybrid fuel‑cell and battery system. The locomotive delivers about 1,000 kW of power while being roughly 30 tonnes lighter than a comparable diesel unit. ^[44]
• The pilot forms part of a broader decarbonisation strategy, including:
  • A target to cut Scope 1 and 2 emissions by 50% by 2035;
  • A long‑term goal of carbon neutrality by 2050 across mining and transport operations. ^[45]

On the mining side, structural growth is anchored by:

• Centinela Second Concentrator – now in its second year of full construction, designed to materially increase sulphide processing capacity and by‑product output (notably gold and molybdenum). ^[46]
• Los Pelambres desalination plant expansion and new concentrate pipeline, both advancing through civil and installation works and aimed at improving water security and logistics resilience. ^[47]
• Zaldívar Environmental Impact Assessment (EIA) approval earlier in 2025, which allows the mine life to be extended to 2051, securing a significant portion of the group’s long‑term production base. ^[48]

These projects underpin management’s guidance of +30% medium‑term production growth and help support the company’s premium valuation relative to many diversified miners. ^[49]

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Recent market behaviour: miners riding copper and UK macro news

In the final week of November and into December, Antofagasta has tended to move in step with the broader mining complex and copper price:

• On 26 November, UK equities rallied after Finance Minister Rachel Reeves’ tax‑raising but market‑soothing budget.
  • The FTSE 100 closed up 0.9%.
  • Industrial miners gained about 1.5%.
  • Antofagasta rose around 2.1%, alongside Anglo American’s 3.2% gain, as copper prices strengthened. ^[50]
• On 1 December, London South East’s “FTSE 100 movers” column again listed Antofagasta among the top risers, with the stock up 2.5% intraday to 2,833p, in tandem with metals prices while defence names lagged. ^[51]

This pattern – outperforming on days when copper is strong and underperforming when macro sentiment sours – is classic high‑beta commodity behaviour and emphasises that the stock is tightly coupled to copper and risk sentiment, even more so now that it trades at elevated multiples.

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Key risks investors need to weigh

Even with strong fundamentals, Antofagasta is far from risk‑free. The main risk buckets look something like this:

1. Copper price volatility
   • Earnings and free cash flow are highly sensitive to copper prices. A move from a $10–11k/t scenario toward the $8k/t bear‑case discussed by Fastmarkets’ panel would significantly dent margins and returns, even with lower net cash costs. ^[52]
2. Project execution and capex creep
   • While management insists that Centinela and Los Pelambres projects are on budget and on schedule, large‑scale projects always face risks around cost inflation, delays and technical issues.
   • The shift in 2025 capex guidance from $3.9bn to $3.6bn is presented as FX‑driven deferral, but the true spend and timing will only become clear in 2026. ^[53]
3. Chile‑specific regulatory and political risk
   • All of Antofagasta’s operating mines are in Chile, concentrating exposure to that country’s tax, royalty and environmental regimes.
   • While recent years have seen more clarity on mining royalties, longer‑term political shifts could still affect profitability.
4. Water, climate and environmental constraints
   • Operations such as Los Pelambres are in areas where water management is structurally challenging. The desalination projects are designed to mitigate this, but also increase capital intensity and operating complexity. ^[54]
5. Labour and social licence to operate
   • Although multiple three‑year labour agreements were recently concluded, one negotiation remains for 2025, and future bargaining rounds always carry strike risk. ^[55]
   • The company’s long‑term success also depends on stable community relations and environmental compliance, particularly with more ambitious decarbonisation goals.

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Is Antofagasta stock a buy, hold or sell going into 2026?

Framed in general, not personal terms, the investment case as of 2 December 2025 looks like this:

Positives

• Exceptional recent financial performance, with EBITDA up 60% and margins near 60%, supported by higher production, lower costs and strong by‑product markets. ^[56]
• Improving cost profile, with net cash costs lowered to $1.24/lb year‑to‑date and guidance for the full year cut to $1.20–1.30/lb. ^[57]
• Medium‑term volume growth of ~30%, backed by fully funded projects already under construction and a mine‑life extension at Zaldívar. ^[58]
• Structural copper tailwinds, with major banks and market analysts expecting deficits and base‑case prices around $10,000–$11,000/t in 2026. ^[59]
• A strengthening ESG story, including pioneering hydrogen freight locomotives and robust decarbonisation commitments, which may support demand from ESG‑mandated investors. ^[60]

Cautions

• The share price is near its all‑time high, with the stock trading above both Deutsche Bank’s raised 2,400p target and the consensus target around 2,630p. ^[61]
• Valuation multiples (low‑ to mid‑20s trailing P/E, high‑teens forward P/E, EV/EBITDA around 9–10x) leave less margin of safety if copper prices wobble or projects slip. ^[62]
• Short‑term technical indicators flag overbought conditions and the possibility of a pullback after a strong run. ^[63]
• Single‑country concentration in Chile and a fully copper‑centric portfolio mean little diversification if sentiment turns against either copper or the Chilean mining regime.

For long‑term, high‑risk‑tolerant investors who are bullish on copper through the rest of the decade, Antofagasta currently represents a high‑quality but not obviously cheap way to gain leveraged exposure to that theme.

References

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