Antofagasta stock gains backing as Berenberg lifts rating on copper outlook
Published on 09/20/2026 at 20:58 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWS
Antofagasta plc stock (ISIN GB0000456144) is trading around GBX 3,657 on the London Stock Exchange as of September 19, 2026, with investors focusing on a recent Berenberg upgrade to Buy that comes alongside solid first-half 2026 earnings figures. As Sharecast reported with reference to Berenberg’s note dated September 15, 2026, the bank kept its price target unchanged at 4,400 pence, implying around 16 percent upside from recent levels after a sharp pullback in copper prices created what it sees as an attractive entry point.
Berenberg upgrade anchors Antofagasta stock
According to Sharecast on September 15, 2026, Berenberg upgraded Antofagasta from Hold to Buy while reaffirming its 4,400 pence price target, arguing that last week’s sharp copper price pullback offers roughly 16 percent upside from the current share price. The report highlights that the rating change is driven by the view that copper demand remains structurally supported while supply has lagged, positioning Antofagasta to benefit as prices normalize.
Further detail from the same Berenberg-themed coverage cited on MarketBeat shows that the Antofagasta share price stood at GBX 3,657, down 45 pence or 1.22 percent intraday as of September 18, 2026, which leaves the stock trading below the 4,400 pence target and defines the upside case in numeric terms. MarketBeat’s overview notes that since an earlier reference point the ANTO stock price has increased by 11.5 percent to reach GBX 3,657, underlining that the shares have already recovered a double-digit percentage yet still sit roughly 16 percent below the bank’s valuation benchmark.
Half-year 2026 earnings show strong margin
In its most recent half-year report for the period ended June 30, 2026, Antofagasta delivered revenue of USD 2.68 billion and operating profit of USD 571.1 million, according to an earnings summary echoed in a corporate news overview that draws on the company’s interim figures. As summarized by a corporate news article referencing Antofagasta’s half-year results to June 30, 2026, these numbers translate into an operating margin of about 21.3 percent for the first half of 2026, illustrating the profitability of the group’s copper-focused portfolio in a volatile commodity environment.
The same corporate summary indicates that Antofagasta’s market capitalization amounted to GBP 27.9 billion as of September 19, 2026, showing the miner’s scale among UK-listed resources groups. With a share price around GBX 3,657 and a market cap near GBP 27.9 billion, the valuation suggests investors are paying roughly GBP 10.4 million of equity value per USD 1 million of first-half 2026 operating profit, using the reported operating profit of USD 571.1 million as a reference point, which is a useful yardstick for comparing Antofagasta with other diversified metals and mining peers.
Analyst stance and copper risk context
According to MarketBeat on September 19, 2026, Antofagasta has recently seen its stock rating upgraded by Berenberg Bank, with MarketBeat relaying a series of headlines including that Berenberg raised Antofagasta to Buy with a 4,400 pence price target and that other houses such as Bernstein have maintained Hold ratings. This mix of views underscores that while Berenberg sees roughly 16 percent upside, some analysts remain more cautious, reflecting uncertainties around copper price volatility, cost inflation and project execution.
As the MarketBeat data and related news flow make clear, Antofagasta’s share performance has benefited from a rebound of about 11.5 percent since a prior reference level, yet the price remains below the reiterated 4,400 pence target, leaving room for further gains if copper prices and earnings stay supportive. For investors, the combination of a reported 21.3 percent operating margin in the first half of 2026 and a double-digit percentage upside to a named analyst target is central to the current equity story, while the main risk factor is that another downswing in copper prices could compress margins and challenge the Buy thesis.
Stock price and trading metrics
Antofagasta stock is quoted primarily on the London Stock Exchange under the ticker ANTO, with a recent share price of GBX 3,657 and an intraday decline of 1.22 percent as of September 18, 2026, based on MarketBeat’s trading snapshot. As of September 19, 2026, the company’s market capitalization stood at about GBP 27.9 billion, placing it among the larger UK basic materials constituents and reflecting the market’s view of its copper and mining assets. For investors watching Antofagasta stock, the current price around GBX 3,657 relative to the 4,400 pence Berenberg target and the first-half 2026 operating margin of roughly 21.3 percent frame both the opportunity and the sensitivity to future copper price moves.
Antofagasta stock key data
- Company: Antofagasta plc
- ISIN: GB0000456144
- Ticker: ANTO
- Trading venue: London Stock Exchange
- Price (as of September 19, 2026): 3,657 GBX
- Market capitalization: 27.9 billion GBP (as of September 19, 2026)
- Sector / Industry: Basic materials / Diversified metals and mining
- Index membership: FTSE 100
