# Aluminum — company-by-company sector analysis

> Aluminum: Century Aluminum Company owns the largest revenue base AND the fastest current growth.

Sector Alpha — machine-written from the numbers. Data as of 2026-08-04. Not investment advice.

## Bottom line

Aluminum has outperformed S&P 500 by 73.4% over 52 weeks and 18.7% over 13 weeks. 2 of 4 covered companies beat the S&P 500 on Mansfield relative strength, while 2 of 4 beat the sector itself. Century Aluminum Company leads with revenue of $2,543 million, based on 1 of 4 comparable companies through Mar 2026.

## Sector relative strength

Aluminum has outperformed S&P 500 by 73.4% over the last 52 weeks. Over 13 weeks the gap is a shortfall of 18.7%. 2 of 4 covered companies currently beat the S&P 500 on Mansfield relative strength, so leadership inside the sector is selective. Kaiser Aluminum Corporation is the strongest against the sector itself at +17.2%.

13-week sector return versus NIFTY 500: -19%
52-week sector return versus NIFTY 500: 73%
Stocks leading NIFTY: 2/4
Stocks leading sector: 2/4

Central tension: The central tension: current leadership is concentrated, so durability matters more than rank.

Companies: 4
Combined market value: ₹23.9K Cr

## 4-Factor Sector Score

An additive sector-relative research score. The four displayed point contributions always equal the total: Growth & earnings (35), Capital efficiency (25), Valuation (20), and Relative strength (20). Missing or stale evidence is absorbed inside the affected factor, never applied as a hidden adjustment.

1. Constellium SE (CSTM): 62/100 — Thin evidence · provisional; evidence 55%
   - Growth & earnings 24.9/35 | Capital efficiency 7.8/25 | Valuation 10.0/20 | Relative strength 19.0/20
   - Price stage: ASLEEP — Neither ahead of the benchmark nor yet turning up against it.
   - Led NIFTY 500 by 5%+ over the prior 13 weeks in 6 of the last 12 weeks
   - Exact sum: 24.9 + 7.8 + 10 + 19 = 61.7
   - Decision use: Fill the missing evidence before acting; the ranking is deliberately pulled toward neutral.
2. Kaiser Aluminum Corporation (KALU): 61/100 — Thin evidence · provisional; evidence 55%
   - Growth & earnings 24.6/35 | Capital efficiency 6.5/25 | Valuation 10.0/20 | Relative strength 20.0/20
   - Price stage: ASLEEP — Neither ahead of the benchmark nor yet turning up against it.
   - Led NIFTY 500 by 5%+ over the prior 13 weeks in 7 of the last 12 weeks
   - Exact sum: 24.6 + 6.5 + 10 + 20 = 61.1
   - Decision use: Fill the missing evidence before acting; the ranking is deliberately pulled toward neutral.
3. Century Aluminum Company (CENX): 57/100 — Mixed-positive evidence; evidence 68%
   - Growth & earnings 26.8/35 | Capital efficiency 18.6/25 | Valuation 10.0/20 | Relative strength 1.4/20
   - Price stage: ASLEEP — Neither ahead of the benchmark nor yet turning up against it.
   - Led NIFTY 500 by 5%+ over the prior 13 weeks in 2 of the last 12 weeks
   - Exact sum: 26.8 + 18.6 + 10 + 1.4 = 56.8
   - Decision use: Acceleration candidate, not a confirmed leader: earnings are strong but sector-relative strength is -7.1% and the one-year return is 104.8%. Do not upgrade until sector-relative strength is above zero and another reported period confirms growth.
4. Alcoa Corporation (AA): 37/100 — Thin evidence · provisional; evidence 55%
   - Growth & earnings 19.0/35 | Capital efficiency 8.0/25 | Valuation 10.0/20 | Relative strength 0.0/20
   - Price stage: ASLEEP — Neither ahead of the benchmark nor yet turning up against it.
   - Led NIFTY 500 by 5%+ over the prior 13 weeks in 3 of the last 12 weeks
   - Exact sum: 19 + 8 + 10 + 0 = 37
   - Decision use: Fill the missing evidence before acting; the ranking is deliberately pulled toward neutral.

## Market action

Kaiser Aluminum Corporation has the strongest one-year price move in Aluminum at +136.2%. It also leads on Mansfield relative strength against the S&P 500 at +24.8%. 2 of 4 covered companies are above zero on that measure. Every line covers 314 weekly closes through 2026-08-04.

### Strongest one-year price performers
1. Kaiser Aluminum Corporation (KALU): 136%
2. Constellium SE (CSTM): 120%
3. Century Aluminum Company (CENX): 105%
4. Alcoa Corporation (AA): 55%

### Strongest relative strength versus NIFTY 500
1. Kaiser Aluminum Corporation (KALU): 25%
2. Constellium SE (CSTM): 16%
3. Century Aluminum Company (CENX): -2.2%
4. Alcoa Corporation (AA): -18%

## Revenue Scale & Growth Durability

What the numbers say: Century Aluminum Company is the scale leader at $2,543 million, Century Aluminum Company's growth is 7.5% from a $2,543 million base, with 19 reported observations in the 20-quarter window. Treat the growth leader as an acceleration candidate, not as equally proven scale.

Investor read: Century Aluminum Company is the scale benchmark; Century Aluminum Company is the acceleration watch. Promote the challenger only if growth persists and converts into margin and returns.

This conclusion weakens if: Century Aluminum Company's growth falls below Century Aluminum Company's for two consecutive comparable reports while operating margin also compresses.

Evidence: Century Aluminum Company · $2,543 million | Not enough peers | 6/8 recent comparable periods | 1/4 companies · 76 observations

Definition: Revenue is compared on a common reported-currency basis. Growth is year-on-year, so seasonality does not masquerade as progress.

### Revenue — largest
1. Century Aluminum Company (CENX): ₹2.5K Cr

### Revenue growth — fastest growers
1. Century Aluminum Company (CENX): 7.5%

### 20-quarter Revenue history
- AA: Sep 2021 ₹1.3K Cr | Dec 2021 ₹8.5K Cr | Mar 2022 ₹3.3K Cr | Jun 2022 ₹1.4K Cr | Sep 2022 ₹1.4K Cr | Dec 2022 ₹8.3K Cr | Mar 2023 ₹1.6K Cr | Jun 2023 ₹2.7K Cr | Sep 2023 ₹1.7K Cr | Dec 2023 ₹5.6K Cr | Mar 2024 ₹1.8K Cr | Jun 2024 ₹2.9K Cr | Sep 2024 ₹1.8K Cr | Dec 2024 ₹6.4K Cr | Mar 2025 ₹3.4K Cr | Jun 2025 ₹3.0K Cr | Sep 2025 ₹2.1K Cr | Dec 2025 ₹6.7K Cr | Mar 2026 ₹3.2K Cr | Jun 2026 —
- CENX: Sep 2021 ₹581 Cr | Dec 2021 ₹659 Cr | Mar 2022 ₹754 Cr | Jun 2022 ₹857 Cr | Sep 2022 ₹637 Cr | Dec 2022 ₹530 Cr | Mar 2023 ₹552 Cr | Jun 2023 ₹576 Cr | Sep 2023 ₹545 Cr | Dec 2023 ₹512 Cr | Mar 2024 ₹490 Cr | Jun 2024 ₹561 Cr | Sep 2024 ₹539 Cr | Dec 2024 ₹631 Cr | Mar 2025 ₹634 Cr | Jun 2025 ₹628 Cr | Sep 2025 ₹632 Cr | Dec 2025 ₹634 Cr | Mar 2026 ₹649 Cr | Jun 2026 —
- CSTM: Sep 2021 ₹1.8K Cr | Dec 2021 ₹1.9K Cr | Mar 2022 ₹2.2K Cr | Jun 2022 ₹2.4K Cr | Sep 2022 ₹2.0K Cr | Dec 2022 ₹2.0K Cr | Mar 2023 ₹2.1K Cr | Jun 2023 ₹2.1K Cr | Sep 2023 ₹1.8K Cr | Dec 2023 ₹1.8K Cr | Mar 2024 ₹1.9K Cr | Jun 2024 ₹1.9K Cr | Sep 2024 ₹1.8K Cr | Dec 2024 ₹1.7K Cr | Mar 2025 ₹2.0K Cr | Jun 2025 ₹2.1K Cr | Sep 2025 ₹2.2K Cr | Dec 2025 ₹2.2K Cr | Mar 2026 ₹2.5K Cr | Jun 2026 —
- KALU: Sep 2021 ₹751 Cr | Dec 2021 ₹806 Cr | Mar 2022 ₹949 Cr | Jun 2022 ₹954 Cr | Sep 2022 ₹749 Cr | Dec 2022 ₹776 Cr | Mar 2023 ₹808 Cr | Jun 2023 ₹814 Cr | Sep 2023 ₹744 Cr | Dec 2023 ₹722 Cr | Mar 2024 ₹738 Cr | Jun 2024 ₹773 Cr | Sep 2024 ₹748 Cr | Dec 2024 ₹765 Cr | Mar 2025 ₹777 Cr | Jun 2025 ₹823 Cr | Sep 2025 ₹844 Cr | Dec 2025 ₹929 Cr | Mar 2026 ₹1.1K Cr | Jun 2026 —

### 20-quarter Revenue growth history
- AA: Sep 2021 — | Dec 2021 — | Mar 2022 — | Jun 2022 17% | Sep 2022 12% | Dec 2022 -1.9% | Mar 2023 -51% | Jun 2023 93% | Sep 2023 16% | Dec 2023 -32% | Mar 2024 14% | Jun 2024 8.3% | Sep 2024 11% | Dec 2024 13% | Mar 2025 85% | Jun 2025 3.9% | Sep 2025 14% | Dec 2025 6.2% | Mar 2026 -5.2% | Jun 2026 —
- CENX: Sep 2021 — | Dec 2021 — | Mar 2022 — | Jun 2022 62% | Sep 2022 9.6% | Dec 2022 -20% | Mar 2023 -27% | Jun 2023 -33% | Sep 2023 -14% | Dec 2023 -3.4% | Mar 2024 -11% | Jun 2024 -2.6% | Sep 2024 -1.1% | Dec 2024 23% | Mar 2025 29% | Jun 2025 12% | Sep 2025 17% | Dec 2025 0.5% | Mar 2026 2.4% | Jun 2026 —
- CSTM: Sep 2021 — | Dec 2021 — | Mar 2022 — | Jun 2022 32% | Sep 2022 8.0% | Dec 2022 2.0% | Mar 2023 -3.0% | Jun 2023 -11% | Sep 2023 -8.2% | Dec 2023 -9.9% | Mar 2024 -12% | Jun 2024 -9.3% | Sep 2024 -1.0% | Dec 2024 -3.5% | Mar 2025 5.3% | Jun 2025 8.9% | Sep 2025 20% | Dec 2025 28% | Mar 2026 24% | Jun 2026 —
- KALU: Sep 2021 — | Dec 2021 — | Mar 2022 — | Jun 2022 29% | Sep 2022 -0.3% | Dec 2022 -3.7% | Mar 2023 -15% | Jun 2023 -15% | Sep 2023 -0.7% | Dec 2023 -7.0% | Mar 2024 -8.7% | Jun 2024 -5.0% | Sep 2024 0.5% | Dec 2024 6.0% | Mar 2025 5.3% | Jun 2025 6.5% | Sep 2025 13% | Dec 2025 21% | Mar 2026 42% | Jun 2026 —

## Operating Economics & Margin Trend

What the numbers say: Century Aluminum Company leads both opm at 57.6% and margin change at +50.8 percentage points.

Investor read: Century Aluminum Company sets the level benchmark; use the change leader as an inflection watch only after another comparable report confirms it.

This conclusion weakens if: The next two comparable reports reverse the current margin change signal.

Evidence: Century Aluminum Company · 57.6% | 350% versus #2 · Alcoa Corporation | 6/8 recent comparable periods | 4/4 companies · 76 observations

Definition: Operating margin compares operating profit with revenue. Improvement is measured in percentage points, not percentage growth.

### OPM — highest
1. Century Aluminum Company (CENX): 58%
2. Alcoa Corporation (AA): 13%
3. Constellium SE (CSTM): 12%
4. Kaiser Aluminum Corporation (KALU): 8.8%

### Margin change — fastest expanders
1. Century Aluminum Company (CENX): +50.8 pp
2. Constellium SE (CSTM): +7.7 pp
3. Kaiser Aluminum Corporation (KALU): +3.5 pp
4. Alcoa Corporation (AA): −7.8 pp

### 20-quarter OPM history
- AA: Sep 2021 22% | Dec 2021 23% | Mar 2022 24% | Jun 2022 23% | Sep 2022 21% | Dec 2022 13% | Mar 2023 22% | Jun 2023 -2.5% | Sep 2023 23% | Dec 2023 -11% | Mar 2024 24% | Jun 2024 3.8% | Sep 2024 27% | Dec 2024 -1.8% | Mar 2025 21% | Jun 2025 3.5% | Sep 2025 29% | Dec 2025 1.3% | Mar 2026 13% | Jun 2026 —
- CENX: Sep 2021 6.9% | Dec 2021 7.7% | Mar 2022 11% | Jun 2022 -18% | Sep 2022 -8.1% | Dec 2022 -5.8% | Mar 2023 5.0% | Jun 2023 -0.1% | Sep 2023 -4.4% | Dec 2023 5.7% | Mar 2024 0.4% | Jun 2024 1.1% | Sep 2024 12% | Dec 2024 5.8% | Mar 2025 6.8% | Jun 2025 3.3% | Sep 2025 9.2% | Dec 2025 5.2% | Mar 2026 58% | Jun 2026 —
- CSTM: Sep 2021 9.6% | Dec 2021 2.9% | Mar 2022 13% | Jun 2022 -0.2% | Sep 2022 1.5% | Dec 2022 3.3% | Mar 2023 3.2% | Jun 2023 4.1% | Sep 2023 6.9% | Dec 2023 4.8% | Mar 2024 3.0% | Jun 2024 6.7% | Sep 2024 2.8% | Dec 2024 0.9% | Mar 2025 4.5% | Jun 2025 4.0% | Sep 2025 7.1% | Dec 2025 8.6% | Mar 2026 12% | Jun 2026 —
- KALU: Sep 2021 2.6% | Dec 2021 2.1% | Mar 2022 2.7% | Jun 2022 -0.2% | Sep 2022 0.4% | Dec 2022 -2.9% | Mar 2023 2.4% | Jun 2023 4.4% | Sep 2023 2.6% | Dec 2023 3.0% | Mar 2024 3.3% | Jun 2024 2.0% | Sep 2024 2.3% | Dec 2024 2.9% | Mar 2025 5.3% | Jun 2025 4.6% | Sep 2025 5.8% | Dec 2025 6.5% | Mar 2026 8.8% | Jun 2026 —

### 20-quarter Margin change history
- AA: Sep 2021 — | Dec 2021 — | Mar 2022 — | Jun 2022 −0.8 pp | Sep 2022 −1.2 pp | Dec 2022 −9.4 pp | Mar 2023 −1.4 pp | Jun 2023 −25.0 pp | Sep 2023 +2.2 pp | Dec 2023 −24.1 pp | Mar 2024 +1.8 pp | Jun 2024 +6.3 pp | Sep 2024 +3.7 pp | Dec 2024 +9.1 pp | Mar 2025 −3.3 pp | Jun 2025 −0.3 pp | Sep 2025 +2.8 pp | Dec 2025 +3.1 pp | Mar 2026 −7.8 pp | Jun 2026 —
- CENX: Sep 2021 — | Dec 2021 — | Mar 2022 — | Jun 2022 −19.8 pp | Sep 2022 −15.0 pp | Dec 2022 −13.5 pp | Mar 2023 −5.8 pp | Jun 2023 +17.4 pp | Sep 2023 +3.7 pp | Dec 2023 +11.5 pp | Mar 2024 −4.6 pp | Jun 2024 +1.2 pp | Sep 2024 +16.2 pp | Dec 2024 +0.1 pp | Mar 2025 +6.4 pp | Jun 2025 +2.2 pp | Sep 2025 −2.6 pp | Dec 2025 −0.6 pp | Mar 2026 +50.8 pp | Jun 2026 —
- CSTM: Sep 2021 — | Dec 2021 — | Mar 2022 — | Jun 2022 −11.2 pp | Sep 2022 −8.1 pp | Dec 2022 +0.4 pp | Mar 2023 −9.3 pp | Jun 2023 +4.3 pp | Sep 2023 +5.4 pp | Dec 2023 +1.5 pp | Mar 2024 −0.2 pp | Jun 2024 +2.6 pp | Sep 2024 −4.1 pp | Dec 2024 −3.9 pp | Mar 2025 +1.5 pp | Jun 2025 −2.7 pp | Sep 2025 +4.3 pp | Dec 2025 +7.7 pp | Mar 2026 +7.7 pp | Jun 2026 —
- KALU: Sep 2021 — | Dec 2021 — | Mar 2022 — | Jun 2022 −1.7 pp | Sep 2022 −2.2 pp | Dec 2022 −5.0 pp | Mar 2023 −0.3 pp | Jun 2023 +4.6 pp | Sep 2023 +2.2 pp | Dec 2023 +5.9 pp | Mar 2024 +0.9 pp | Jun 2024 −2.4 pp | Sep 2024 −0.3 pp | Dec 2024 −0.1 pp | Mar 2025 +2.0 pp | Jun 2025 +2.6 pp | Sep 2025 +3.5 pp | Dec 2025 +3.6 pp | Mar 2026 +3.5 pp | Jun 2026 —

## Profit Scale & Acceleration

What the numbers say: Century Aluminum Company leads with $361 million of TTM profit, Century Aluminum Company shows ≥100% on the scoring scale (362.8% uncapped) growth from a $361 million profit base. Compare the size of the base and persistence before ranking acceleration above profit scale.

Investor read: Century Aluminum Company sets the level benchmark; use the change leader as an inflection watch only after another comparable report confirms it.

This conclusion weakens if: The next two comparable reports reverse the current profit growth signal.

Evidence: Century Aluminum Company · $361 million | Not enough peers | 2/8 recent comparable periods | 1/4 companies · 76 observations

Definition: Net profit is the residual after operating costs, interest and tax. Growth off a loss or near-zero base is excluded from the fastest-grower rank.

### Net profit — largest
1. Century Aluminum Company (CENX): ₹361 Cr

### Profit growth — fastest growers
1. Century Aluminum Company (CENX): 100%

### 20-quarter Net profit history
- AA: Sep 2021 ₹281 Cr | Dec 2021 ₹1.9K Cr | Mar 2022 ₹763 Cr | Jun 2022 ₹315 Cr | Sep 2022 ₹297 Cr | Dec 2022 ₹1.1K Cr | Mar 2023 ₹355 Cr | Jun 2023 ₹-121 Cr | Sep 2023 ₹379 Cr | Dec 2023 ₹-616 Cr | Mar 2024 ₹436 Cr | Jun 2024 ₹31 Cr | Sep 2024 ₹488 Cr | Dec 2024 ₹150 Cr | Mar 2025 ₹548 Cr | Jun 2025 ₹151 Cr | Sep 2025 ₹614 Cr | Dec 2025 ₹87 Cr | Mar 2026 ₹417 Cr | Jun 2026 —
- CENX: Sep 2021 ₹-52 Cr | Dec 2021 ₹34 Cr | Mar 2022 ₹18 Cr | Jun 2022 ₹37 Cr | Sep 2022 ₹44 Cr | Dec 2022 ₹-23 Cr | Mar 2023 ₹-39 Cr | Jun 2023 ₹7 Cr | Sep 2023 ₹-46 Cr | Dec 2023 ₹21 Cr | Mar 2024 ₹245 Cr | Jun 2024 ₹-7 Cr | Sep 2024 ₹42 Cr | Dec 2024 ₹21 Cr | Mar 2025 ₹22 Cr | Jun 2025 ₹-9 Cr | Sep 2025 ₹11 Cr | Dec 2025 ₹32 Cr | Mar 2026 ₹327 Cr | Jun 2026 —
- CSTM: Sep 2021 ₹115 Cr | Dec 2021 ₹8 Cr | Mar 2022 ₹198 Cr | Jun 2022 ₹-34 Cr | Sep 2022 ₹128 Cr | Dec 2022 ₹32 Cr | Mar 2023 ₹24 Cr | Jun 2023 ₹35 Cr | Sep 2023 ₹68 Cr | Dec 2023 ₹12 Cr | Mar 2024 ₹22 Cr | Jun 2024 ₹77 Cr | Sep 2024 ₹8 Cr | Dec 2024 ₹-33 Cr | Mar 2025 ₹38 Cr | Jun 2025 ₹36 Cr | Sep 2025 ₹88 Cr | Dec 2025 ₹113 Cr | Mar 2026 ₹196 Cr | Jun 2026 —
- KALU: Sep 2021 ₹-2 Cr | Dec 2021 ₹2 Cr | Mar 2022 ₹8 Cr | Jun 2022 ₹-14 Cr | Sep 2022 ₹3 Cr | Dec 2022 ₹-26 Cr | Mar 2023 ₹16 Cr | Jun 2023 ₹18 Cr | Sep 2023 ₹5 Cr | Dec 2023 ₹8 Cr | Mar 2024 ₹18 Cr | Jun 2024 ₹3 Cr | Sep 2024 ₹12 Cr | Dec 2024 ₹7 Cr | Mar 2025 ₹22 Cr | Jun 2025 ₹23 Cr | Sep 2025 ₹40 Cr | Dec 2025 ₹28 Cr | Mar 2026 ₹63 Cr | Jun 2026 —

### 20-quarter Profit growth history
- AA: Sep 2021 — | Dec 2021 — | Mar 2022 — | Jun 2022 13% | Sep 2022 5.7% | Dec 2022 -43% | Mar 2023 -53% | Jun 2023 -138% | Sep 2023 28% | Dec 2023 -156% | Mar 2024 23% | Jun 2024 — | Sep 2024 29% | Dec 2024 — | Mar 2025 26% | Jun 2025 387% | Sep 2025 26% | Dec 2025 -42% | Mar 2026 -24% | Jun 2026 —
- CENX: Sep 2021 — | Dec 2021 — | Mar 2022 — | Jun 2022 — | Sep 2022 — | Dec 2022 -168% | Mar 2023 -317% | Jun 2023 -81% | Sep 2023 -205% | Dec 2023 — | Mar 2024 — | Jun 2024 -200% | Sep 2024 — | Dec 2024 0.0% | Mar 2025 -91% | Jun 2025 — | Sep 2025 -74% | Dec 2025 52% | Mar 2026 1,386% | Jun 2026 —
- CSTM: Sep 2021 — | Dec 2021 — | Mar 2022 — | Jun 2022 -127% | Sep 2022 11% | Dec 2022 300% | Mar 2023 -88% | Jun 2023 — | Sep 2023 -47% | Dec 2023 -63% | Mar 2024 -8.3% | Jun 2024 120% | Sep 2024 -88% | Dec 2024 -375% | Mar 2025 73% | Jun 2025 -53% | Sep 2025 1,000% | Dec 2025 — | Mar 2026 416% | Jun 2026 —
- KALU: Sep 2021 — | Dec 2021 — | Mar 2022 — | Jun 2022 — | Sep 2022 — | Dec 2022 -1,400% | Mar 2023 100% | Jun 2023 — | Sep 2023 67% | Dec 2023 — | Mar 2024 13% | Jun 2024 -83% | Sep 2024 140% | Dec 2024 -13% | Mar 2025 22% | Jun 2025 667% | Sep 2025 233% | Dec 2025 300% | Mar 2026 186% | Jun 2026 —

## Return On Capital Employed

What the numbers say: Century Aluminum Company leads ROCE at 20.7%, 14 percentage points above Constellium SE. Century Aluminum Company has the strongest latest improvement at +17.7 percentage points. Read the leader beside the density of its reported history: a sparse high return is a candidate; a repeated high return is evidence of durability.

Investor read: Century Aluminum Company sets the level benchmark; use the change leader as an inflection watch only after another comparable report confirms it.

This conclusion weakens if: The next two comparable reports reverse the current roce change signal.

Evidence: Century Aluminum Company · 20.7% | 209% versus #2 · Constellium SE | 6/8 recent comparable periods | 4/4 companies · 79 observations

Definition: ROCE asks how much operating return the business earns on the capital employed. Direction matters, but a single exceptional year should not be mistaken for durability.

### ROCE — highest
1. Century Aluminum Company (CENX): 21%
2. Constellium SE (CSTM): 6.7%
3. Kaiser Aluminum Corporation (KALU): 6.1%
4. Alcoa Corporation (AA): 5.8%

### ROCE change — fastest improvers
1. Century Aluminum Company (CENX): +17.7 pp
2. Alcoa Corporation (AA): +4.9 pp
3. Constellium SE (CSTM): +4.3 pp
4. Kaiser Aluminum Corporation (KALU): +4.2 pp

### 20-quarter ROCE history
- AA: Sep 2021 3.0% | Dec 2021 16% | Mar 2022 7.1% | Jun 2022 3.5% | Sep 2022 3.4% | Dec 2022 9.3% | Mar 2023 2.9% | Jun 2023 -0.8% | Sep 2023 4.4% | Dec 2023 -5.4% | Mar 2024 4.3% | Jun 2024 1.1% | Sep 2024 5.5% | Dec 2024 1.0% | Mar 2025 7.7% | Jun 2025 0.9% | Sep 2025 6.6% | Dec 2025 0.8% | Mar 2026 3.7% | Jun 2026 5.8%
- CENX: Sep 2021 3.7% | Dec 2021 4.6% | Mar 2022 7.7% | Jun 2022 -14% | Sep 2022 -4.8% | Dec 2022 -2.9% | Mar 2023 2.6% | Jun 2023 -0.1% | Sep 2023 -2.1% | Dec 2023 2.7% | Mar 2024 0.2% | Jun 2024 0.5% | Sep 2024 5.0% | Dec 2024 3.6% | Mar 2025 3.0% | Jun 2025 1.4% | Sep 2025 3.9% | Dec 2025 1.9% | Mar 2026 21% | Jun 2026 —
- CSTM: Sep 2021 5.0% | Dec 2021 1.6% | Mar 2022 7.9% | Jun 2022 -0.1% | Sep 2022 0.9% | Dec 2022 1.9% | Mar 2023 2.0% | Jun 2023 2.5% | Sep 2023 3.6% | Dec 2023 2.5% | Mar 2024 1.6% | Jun 2024 3.6% | Sep 2024 1.4% | Dec 2024 0.5% | Mar 2025 2.6% | Jun 2025 2.4% | Sep 2025 4.3% | Dec 2025 5.6% | Mar 2026 8.5% | Jun 2026 6.7%
- KALU: Sep 2021 1.1% | Dec 2021 0.9% | Mar 2022 1.3% | Jun 2022 -0.1% | Sep 2022 0.2% | Dec 2022 -1.2% | Mar 2023 1.0% | Jun 2023 1.9% | Sep 2023 1.0% | Dec 2023 1.2% | Mar 2024 1.3% | Jun 2024 0.8% | Sep 2024 0.9% | Dec 2024 1.1% | Mar 2025 2.1% | Jun 2025 1.9% | Sep 2025 2.4% | Dec 2025 2.9% | Mar 2026 4.6% | Jun 2026 6.1%

### 20-quarter ROCE change history
- AA: Sep 2021 — | Dec 2021 — | Mar 2022 — | Jun 2022 — | Sep 2022 +0.4 pp | Dec 2022 −6.7 pp | Mar 2023 −4.2 pp | Jun 2023 −4.3 pp | Sep 2023 +1.0 pp | Dec 2023 −14.7 pp | Mar 2024 +1.4 pp | Jun 2024 +1.9 pp | Sep 2024 +1.1 pp | Dec 2024 +6.4 pp | Mar 2025 +3.4 pp | Jun 2025 −0.2 pp | Sep 2025 +1.1 pp | Dec 2025 −0.2 pp | Mar 2026 −4.0 pp | Jun 2026 +4.9 pp
- CENX: Sep 2021 — | Dec 2021 — | Mar 2022 — | Jun 2022 — | Sep 2022 −8.5 pp | Dec 2022 −7.5 pp | Mar 2023 −5.1 pp | Jun 2023 +13.8 pp | Sep 2023 +2.7 pp | Dec 2023 +5.6 pp | Mar 2024 −2.4 pp | Jun 2024 +0.6 pp | Sep 2024 +7.1 pp | Dec 2024 +0.9 pp | Mar 2025 +2.8 pp | Jun 2025 +0.9 pp | Sep 2025 −1.1 pp | Dec 2025 −1.7 pp | Mar 2026 +17.7 pp | Jun 2026 —
- CSTM: Sep 2021 — | Dec 2021 — | Mar 2022 — | Jun 2022 — | Sep 2022 −4.1 pp | Dec 2022 +0.3 pp | Mar 2023 −5.9 pp | Jun 2023 +2.6 pp | Sep 2023 +2.7 pp | Dec 2023 +0.6 pp | Mar 2024 −0.4 pp | Jun 2024 +1.1 pp | Sep 2024 −2.2 pp | Dec 2024 −2.0 pp | Mar 2025 +1.0 pp | Jun 2025 −1.2 pp | Sep 2025 +2.9 pp | Dec 2025 +5.1 pp | Mar 2026 +5.9 pp | Jun 2026 +4.3 pp
- KALU: Sep 2021 — | Dec 2021 — | Mar 2022 — | Jun 2022 — | Sep 2022 −0.9 pp | Dec 2022 −2.1 pp | Mar 2023 −0.3 pp | Jun 2023 +2.0 pp | Sep 2023 +0.8 pp | Dec 2023 +2.4 pp | Mar 2024 +0.3 pp | Jun 2024 −1.1 pp | Sep 2024 −0.1 pp | Dec 2024 −0.1 pp | Mar 2025 +0.8 pp | Jun 2025 +1.1 pp | Sep 2025 +1.5 pp | Dec 2025 +1.8 pp | Mar 2026 +2.5 pp | Jun 2026 +4.2 pp

## Valuation Against Growth & Quality

What the numbers say: There is not enough comparable evidence to name a reliable peg leader.

Investor read: Treat valuation as permission to investigate, never as a standalone reason to buy.

This conclusion weakens if: The next two comparable reports reverse the current p/e signal.

Evidence: No comparable leader | Not enough peers | Not enough history | 0/4 companies · 5 observations

Definition: PEG is shown only when earnings are positive and three-year EPS growth is between 5% and 60%. It is recomputed consistently as the trailing P/E divided by that growth rate — reported earnings, never an expected-earnings multiple. On Indian companies it is shown only where the two data feeds agreed. Where any of that fails the ratio is left out rather than printed: a P/E divided by a loss, or by growth measured off a tiny base, is a number that looks precise and means nothing.

### PEG — lowest PEG

### P/E — lowest P/E
1. Constellium SE (CSTM): 8.2
2. Alcoa Corporation (AA): 10.8
3. Kaiser Aluminum Corporation (KALU): 14.5
4. Century Aluminum Company (CENX): 17.5

### 20-quarter PEG history
- AA: Sep 2021 — | Dec 2021 — | Mar 2022 — | Jun 2022 — | Sep 2022 — | Dec 2022 — | Mar 2023 — | Jun 2023 — | Sep 2023 — | Dec 2023 — | Mar 2024 — | Jun 2024 — | Sep 2024 — | Dec 2024 — | Mar 2025 — | Jun 2025 — | Sep 2025 — | Dec 2025 — | Mar 2026 1.2 | Jun 2026 —
- CSTM: Sep 2021 — | Dec 2021 — | Mar 2022 — | Jun 2022 — | Sep 2022 — | Dec 2022 — | Mar 2023 — | Jun 2023 — | Sep 2023 — | Dec 2023 — | Mar 2024 — | Jun 2024 — | Sep 2024 — | Dec 2024 — | Mar 2025 — | Jun 2025 — | Sep 2025 1.9 | Dec 2025 — | Mar 2026 — | Jun 2026 —
- KALU: Sep 2021 — | Dec 2021 — | Mar 2022 — | Jun 2022 — | Sep 2022 — | Dec 2022 — | Mar 2023 — | Jun 2023 — | Sep 2023 — | Dec 2023 — | Mar 2024 — | Jun 2024 — | Sep 2024 — | Dec 2024 0.5 | Mar 2025 0.4 | Jun 2025 0.4 | Sep 2025 — | Dec 2025 — | Mar 2026 — | Jun 2026 —

### 20-quarter P/E history
- AA: Sep 2021 35.0 | Dec 2021 26.4 | Mar 2022 31.0 | Jun 2022 14.8 | Sep 2022 10.5 | Dec 2022 — | Mar 2023 37.0 | Jun 2023 147.5 | Sep 2023 59.3 | Dec 2023 — | Mar 2024 32.5 | Jun 2024 23.1 | Sep 2024 18.6 | Dec 2024 145.3 | Mar 2025 8.1 | Jun 2025 6.9 | Sep 2025 7.6 | Dec 2025 12.2 | Mar 2026 17.0 | Jun 2026 10.8
- CENX: Sep 2021 — | Dec 2021 — | Mar 2022 — | Jun 2022 13.4 | Sep 2022 3.4 | Dec 2022 — | Mar 2023 — | Jun 2023 — | Sep 2023 — | Dec 2023 — | Mar 2024 7.1 | Jun 2024 8.1 | Sep 2024 5.4 | Dec 2024 5.6 | Mar 2025 16.0 | Jun 2025 15.8 | Sep 2025 35.4 | Dec 2025 93.3 | Mar 2026 17.5 | Jun 2026 —
- CSTM: Sep 2021 8.5 | Dec 2021 9.0 | Mar 2022 6.0 | Jun 2022 7.0 | Sep 2022 5.1 | Dec 2022 5.6 | Mar 2023 15.8 | Jun 2023 11.9 | Sep 2023 17.3 | Dec 2023 19.4 | Mar 2024 26.0 | Jun 2024 16.7 | Sep 2024 22.6 | Dec 2024 27.0 | Mar 2025 21.0 | Jun 2025 60.5 | Sep 2025 18.8 | Dec 2025 9.8 | Mar 2026 8.0 | Jun 2026 8.2
- KALU: Sep 2021 — | Dec 2021 — | Mar 2022 — | Jun 2022 — | Sep 2022 — | Dec 2022 — | Mar 2023 — | Jun 2023 45.3 | Sep 2023 42.8 | Dec 2023 16.9 | Mar 2024 29.1 | Jun 2024 28.5 | Sep 2024 22.1 | Dec 2024 17.5 | Mar 2025 14.4 | Jun 2025 17.9 | Sep 2025 12.2 | Dec 2025 17.0 | Mar 2026 13.1 | Jun 2026 14.5


## What can make this comparison misleading?
- A high growth rate can be a low-base artefact. The page keeps level and change separate for that reason.
- A high ROCE can be temporary or flattered by a small capital base. Read it beside margin, cash conversion and reinvestment.
- The 4-Factor Sector Score ranks research priority, not portfolio action. Management quality, catalysts and risks need equally fresh evidence before capital is deployed.
- An “all companies” line chart preserves completeness, but rank changes should be checked against reporting dates before drawing a conclusion.
- Thin comparisons: Revenue, Net profit, Valuation have fewer than three usable current readings.

## Every company
- Alcoa Corporation (AA) — market value ₹12.4K Cr; latest fundamentals Jun 2026
- Century Aluminum Company (CENX) — market value ₹4.7K Cr; latest fundamentals Mar 2026
- Constellium SE (CSTM) — market value ₹4.0K Cr; latest fundamentals Jun 2026
- Kaiser Aluminum Corporation (KALU) — market value ₹2.8K Cr; latest fundamentals Jun 2026

## Methodology and freshness

Fundamentals through Jun 2026; prices through 2026-08-04.
Up to 20 quarters per company. Reported history is normalized to Indian rupees crore. Missing values are not interpolated. Derived metrics are calculated only when their inputs are comparable.

## Frequently asked questions

### Is the Aluminum sector outperforming S&P 500?

Aluminum has outperformed S&P 500 by 73.4% over 52 weeks and 18.7% over 13 weeks. 2 of 4 covered companies beat the S&P 500 on Mansfield relative strength, while 2 of 4 beat the sector itself.

### Which Aluminum company is largest by revenue?

Century Aluminum Company leads with revenue of $2,543 million, based on 1 of 4 comparable companies through Mar 2026.

### Which Aluminum company is growing fastest?

Century Aluminum Company has the fastest current revenue growth at 7.5%, across 1 of 4 comparable companies.

### Which Aluminum company has the strongest 4-Factor Sector Score?

Constellium SE ranks first at 61.7/100 with 54.8% evidence confidence. The score prioritizes research; it is not a buy recommendation.

### How much history does this Aluminum comparison include?

The page compares up to 20 reported quarters per company for fundamentals, returns and valuation, ending Jun 2026. Missing observations remain blank rather than being estimated.

### How is the 4-Factor Sector Score calculated?

The four visible contributions add directly: growth and earnings up to 35 points, capital efficiency up to 25, valuation up to 20, and relative strength up to 20. Missing or stale evidence moves only the affected contribution toward neutral.

### Which Aluminum company is the biggest?

Century Aluminum Company is the largest, with trailing-twelve-month revenue of $2,543 million. That covers 1 of 4 companies with comparable reporting through Mar 2026.

### Which Aluminum company has the best profit margins?

Century Aluminum Company has the highest operating margin at 57.6%, from 4 of 4 comparable companies. Century Aluminum Company shows the biggest recent improvement, at +50.8 percentage points. A high margin matters most when it is holding or rising, not when it is peaking.

### Which Aluminum company makes the most profit?

Century Aluminum Company earns the most, at $361 million of trailing-twelve-month net profit, from 1 of 4 comparable companies. Century Aluminum Company has the fastest profit growth at 100%, though growth off a small or recovering profit base overstates how much has actually changed.

### Which Aluminum company earns the highest return on capital?

Century Aluminum Company leads on return on capital employed at 20.7%, across 4 of 4 companies. Read it beside the length of its reported history: a high return that repeats for years is evidence of a durable business, while a single high reading can be a small capital base or one good year.

### Is the Aluminum sector beating the market?

Aluminum has outperformed S&P 500 by 73.4% over the last 52 weeks and 18.7% over 13 weeks, measured on an equal-weight index of its current members. Inside the sector, 2 of 4 covered companies are beating the market on their own. Sector strength does not transfer evenly to every stock in it.

### Which Aluminum stock has the strongest price momentum?

Kaiser Aluminum Corporation has the strongest relative strength against S&P 500. Relative strength answers last, after growth, quality and valuation: price can move well before the fundamentals confirm it, and sometimes without them confirming at all.

### Which Aluminum company scores highest for research priority?

Constellium SE scores 61.7 out of 100 with 54.8% evidence confidence, from 24.9 points on growth and earnings, 7.8 on capital efficiency, 10 on valuation and 19 on relative strength. This ranks what deserves work next. It is not a buy recommendation, and management quality, catalysts and risk still need separate research.

### How many Aluminum companies does this comparison cover, and over what period?

It compares 4 listed companies over up to 20 reported quarters of fundamentals, ending Jun 2026, plus weekly price and relative-strength history. Membership is the full sector list — nothing is dropped for having thin data.

### What is the total market cap of the Aluminum sector?

The 4 Aluminum companies on this page carry $23,873 million of combined market value. Alcoa Corporation is the largest at $12,359 million, about 52% of the sector's total on its own. Market value moves with price, so this reading is dated 2026-08-04.

### How is the Aluminum sector performing?

2 of the 4 covered Aluminum companies are beating S&P 500 on Mansfield relative strength. The sector itself is 73.4% ahead of S&P 500 over 52 weeks on an equal-weight index of its current members. Readings are as of 2026-08-04.

### How many Aluminum stocks are listed in the US?

This comparison covers 4 listed Aluminum companies in the US, each above the size floor the site applies. The full ranked list is on this page, with reported fundamentals through Jun 2026. Membership is the full industry list — nothing is dropped for having thin data.

### Why are some values on this page blank?

A blank means that company did not report a comparable figure for that period, so nothing is shown. Missing observations are never interpolated, carried forward, or replaced with a similar-looking accounting line, and a company with missing evidence has its research score pulled toward neutral rather than being scored as bad.

### Is this investment advice?

No. Every figure here is a deterministic calculation from reported company filings and market data, published for research. It contains no recommendation to buy or sell any security, does not account for your circumstances, and is not a substitute for advice from a licensed adviser.