Alcoa popped 4.9% to $44.97 on Thursday, alongside better revenue and wider reported margins. The catch: the firm’s per-share math is getting diluted at the same time the business is getting a little cleaner.
Here’s the arithmetic. Revenue climbed to $12.8B in 2025, up +7.9% year over year. Net margin finished the year at +9.0%, a swing of +8.5 percentage points versus the prior period. Those improved results were prominent in the filings and in reported results.
But the per-share picture is altered by a big change in the share count: diluted shares increased 22.0% in the latest annual period. That means a lot of the profit improvement has to cover more shares before it shows up for holders on a per-share basis.
Balance-sheet and valuation context: market cap is 11.7B, enterprise value 12.6B, net debt of 841.0M. The stock trades at a P/E of 10.1x and EV/sales of 1.0x, with an earnings yield of +9.9% and a cash-flow yield of +10.1% — figures consistent with a plain-value multiple on a cyclical industrial.
Management points to specific investments and inventory moves that explain part of the improvement. Here’s how they described the cash use that funded capital and strategic commitments.
"In the six-month period of 2025, the use of cash was primarily attributable to capital expenditures of $224 and cash contributions to the ELYSIS partnership of $29, partially offset by cash received of $11 for the sale of a non-core investment." (Alcoa / 10-Q 2026-07-30)
That is: Alcoa is spending on capacity and partnerships while trimming non-core bits. Those items lift the operating base but also consume cash and add fixed costs.
At the same time, management flagged operational tailwinds that helped margins — and a policy tailwind-headwind mix that could swing results around.
"For the second quarter of 2026 in comparison to the first quarter of 2026, the Aluminum segment expects to benefit from inventory repositioning actions taken in the first quarter of 2026, higher shipments and value add product sales, and lower production costs due to the completion of the San Ciprián smelter restart, partially offset by lower third-party energy sales and increased tariff costs on higher U.S. imports of aluminum from Canada." (Alcoa / 10-Q 2026-04-30)
inventory moves, a smelter restart and stronger value-added sales trimmed unit costs and boosted reported margins — but higher import-related tariffs and weaker third-party energy sales bite in other places. That combination makes quarter-to-quarter results noisy.
The company’s own scenario math shows why investors disagree about the stock’s upside. Revenue CAGRs in the firm’s scenarios range from +6.7% in the bull to +0.4% in the bear, and the swing between bullish and bearish valuations is driven mostly by the exit multiple the market assigns. In short: operational improvement helps, but how the market prices those profits matters most.
There’s evidence on both sides. Long-case proof: revenue growth and a big margin recovery in the latest year, plus repeated cost-reduction actions and some tariff benefits called out across filings. Short-case proof: the 22.0% rise in diluted shares and repeated warnings about input and raw-material costs.
So the short story is a tension: cleaner top-line and margins, but more shares and a policy/input-cost gauntlet that can undo per-share gains. The market’s 4.9% move this week occurred alongside those results — a contemporaneous reaction to improved reported metrics and the ongoing dilution and external risks that could affect future beats.
All figures and quotes from Alcoa filings (10-Q and 10-K) dated 2026-07-30, 2026-04-30 and 2026-02-26.