Oct 02 2026 09:51 PM EST

Alcoa Shares Slip as Aluminum Price Drop and Alumina Guidance Cut Weigh on Outlook

Alcoa Corporation (NYSE: AA) reported a record quarterly revenue of $3.966 billion for Q2 FY2026, but adjusted earnings per share fell to $2.12, missing the consensus of $2.31. The miss, coupled with a 16% slide in LME aluminum price, triggered a roughly 4.2% after‑hours decline and contributes to a 41.1% six‑month share‑price drop.

Revenue rose 24% sequentially to $3.966 bn, driven by a 31% jump in third‑party aluminum sales and an 18% rise in shipments. Adjusted EBITDA climbed 51% QoQ to $901 million, reflecting a record aluminum segment EBITDA margin of 32.3%. However, the alumina segment posted an adjusted EBITDA loss of $40 million after gas‑supply disruptions at the Pinjarra refinery caused by Cyclone Narelle.

Commodity price shock drives earnings miss

The LME aluminum cash‑settlement price fell from a four‑year high of $3,520/ton in early June to around $3,282/ton by late July, a decline of roughly 16%. Because aluminum accounts for the bulk of Alcoa’s earnings, the price weakness erased much of the margin benefit from the higher EBITDA margin, leading to the EPS shortfall.

Alumina guidance trimmed amid supply disruptions

Alcoa cut its 2026 alumina production guidance to 9.5‑9.6 million metric tons and shipments to 11.5‑11.6 million tons, down 0.2‑0.3 MMt and 0.3‑0.4 MMt respectively. The revision stems from the Pinjarra refinery instability and a forced‑major at the Jurutu port in Brazil, which limited bauxite intake. The alumina segment’s adjusted EBITDA turned negative, adding pressure to overall profitability.

Strategic acquisition and balance‑sheet impact

In Q2 Alcoa announced a $4.1 billion acquisition of South32’s bauxite, alumina and aluminum assets, financed with $2.6 billion senior notes (yields 6.625‑6.875%). Debt rose to $2.44 billion and the net‑debt‑to‑EBITDA ratio is projected to increase to roughly 1.5‑2.0× post‑deal. While the deal expands upstream control, the added leverage and integration risk are now baked into the valuation.

Macro backdrop and sector dynamics

Global aluminum demand is projected to grow at 3.29% CAGR through 2031, driven by EVs, construction and renewable‑energy infrastructure. However, short‑term demand remains sensitive to inventory levels and macro‑economic cycles. Energy costs, especially U.S. electricity rates of $30‑$40/MWh, continue to compress smelting margins, while Section 232 tariffs on Canadian imports remain in place, adding a roughly $10 million sequential cost reduction only in Q3 2026.

Risks and unanswered questions

Key risks include further volatility in LME aluminum prices, prolonged energy‑cost pressures, and the successful integration of the South32 assets. The Pinjarra refinery remains vulnerable to extreme weather, and the Jurutu port blockage could re‑emerge. Additionally, the company’s debt load, while still within its BB+ rating, may be tested if earnings remain muted. Investors will watch the Q3 FY2026 guidance, the trajectory of aluminum prices, and any progress on the South32 deal for clues on whether the recent share‑price decline will continue.