20-quarter listed-company comparison

Aluminum Stocks

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

01 · the industry itself · before any single company

How has Aluminum moved against S&P 500?

The line below covers up to 5.2 years and opens on the 5Y view; the buttons cut it shorter. Over the most recent two of them this industry is 107% ahead of S&P 500. Earnings across its companies grew 73% on average over the last four reported quarters.

ASLEEP · 1y +88.8%✓Price and the fundamentals both up0 of 4 companies ahead of S&P 500 by 5% or more over three months

RS — · 2/4 >200d (+0) · 0/4 lead (+0) · EPS 4/4↑

Aluminum, equal-weighted, based at 200 S&P 500, same base, same start trailing 12-month earnings per share rising falling

Both lines start at 200 in the same week, so the distance between them is the whole story: the industry line is an equal-weighted index of its 4 companies. The bars underneath are trailing 12-month earnings per share, one bar per reported quarter, each member rebased to 100 at the start and the industry taking the median — so a price line pulling away from flat bars is a re-rating, not earnings. A bar turns red when that figure is lower than the quarter before. Rules are fixed and applied identically everywhere on this site: ahead by 5% or more over three months, or behind by 20% or more over a year while earnings grew 20% or more. Hover any point to read both values and the gap. This is a description of what the numbers did, not advice.

02 · sector relative strength, before individual stocks

Is Aluminum outperforming S&P 500?

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%.

-18.7%Sector vs S&P 500 · 13 weeks

+73.4%Sector vs S&P 500 · 52 weeks

2/4Stocks leading S&P 500

2/4Stocks leading sector

Sector metric: — as of latest available · unclassified · direction unavailable.

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

Start with scale. Then earnings trajectory. Then business quality. Only after those three agree should price leadership carry much weight.

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.

Companies

complete canonical membership

Combined market value

$23.9B

Alcoa Corporation

Revenue growing

1/1

positive TTM year-on-year growth

Beating S&P 500

2/4

positive Mansfield relative strength

Comparing 1 of 4

03 · research priority, made explicit

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.

Growth & earnings · 35%Capital efficiency · 25%Valuation · 20%Relative strength · 20%

Constellium SE has the strongest current balance of earnings trajectory, business quality, valuation and price confirmation, with 54.8% evidence confidence.

How this score is built, and what the marks mean

Missing observations are not scored as bad. Their missing weight lowers confidence and pulls the final score toward neutral. PEG is not shown when the ratio cannot mean anything: the company must be making a profit, its price-to-earnings must be positive, and its three-year earnings growth must fall between 5% and 60%. Dividing a price multiple by a loss, or by growth measured off a tiny base, produces a number that looks precise and tells you nothing. Under relative strength, one mark per week shows the last 12 weeks: a mark is filled where the company led S&P 500 by 5% or more over the 13 weeks ending that week, which is the same test used everywhere on this site. Price stage places the company on the same six-step curve the sector itself is placed on — basing, turning, breaking out, leader, fading, asleep — read from how many weeks running it has led S&P 500 and whether that lead is widening or shrinking. It describes where the PRICE stands, not the earnings trajectory and not a recommendation, and it is left blank for a company whose weekly history is too short or too stale to read.

Company	Score	Price stage	Growth & earnings/35	Capital efficiency/25	Valuation/20	Relative strength/20
1Constellium SECSTM	61.7/100Thin evidence · provisional55% evidence	ASLEEP	24.9/35 Revenue — · PAT — · OPM change 7.7 pp 45% evidence	7.8/25 ROCE 6.7% · OPM 12.2% 76% evidence	10.0/20 P/E 8.2× · PEG — 0% evidence	19.0/20 RS sector 8.8% · RS bench 15.5% · 1Y 120.2%6 of 12 weeks ahead 100% evidence
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.
2Kaiser Aluminum CorporationKALU	61.1/100Thin evidence · provisional55% evidence	ASLEEP	24.6/35 Revenue — · PAT — · OPM change 3.5 pp 45% evidence	6.5/25 ROCE 6.1% · OPM 8.8% 76% evidence	10.0/20 P/E 14.5× · PEG — 0% evidence	20.0/20 RS sector 17.2% · RS bench 24.8% · 1Y 136.2%7 of 12 weeks ahead 100% evidence
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.
3Century Aluminum CompanyCENX	56.8/100Mixed-positive evidence68% evidence	ASLEEP	26.8/35 Revenue 7.5% · PAT 100% · OPM change 50.8 pp 83% evidence	18.6/25 ROCE 20.7% · OPM 57.6% 76% evidence	10.0/20 P/E 17.5× · PEG — 0% evidence	1.4/20 RS sector -7.1% · RS bench -2.2% · 1Y 104.8%2 of 12 weeks ahead 100% evidence
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.
4Alcoa CorporationAA	37.0/100Thin evidence · provisional55% evidence	ASLEEP	19.0/35 Revenue — · PAT — · OPM change -7.8 pp 45% evidence	8.0/25 ROCE 5.8% · OPM 12.8% 76% evidence	10.0/20 P/E 10.8× · PEG — 0% evidence	0.0/20 RS sector -23.3% · RS bench -18% · 1Y 55.2%3 of 12 weeks ahead 100% evidence
Exact sum: 19 + 8 + 10 + 0 = 37 · Decision use: Fill the missing evidence before acting; the ranking is deliberately pulled toward neutral.

04 · what price has already done

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.

Price and relative strength

Every company, the sector's own index and S&P 500 all start level on the left edge of the window, so only the distance between the lines counts — the highest line has risen the most since then, and the chart at the top of this page is drawn the same way. It opens on one year; the buttons beside it stretch that to three or five.

05 · compare level, then change

Revenue Scale & Growth Durability

Century Aluminum Company has the highest Revenue among the 4 Aluminum companies compared here, at $2,543 million. The same company also holds the highest Revenue growth, at 7.5%. 1 of 4 companies report a comparable reading, the latest through Mar 2026. Its Revenue series carries 19 reported observations across the 20-quarter window.

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.

LeaderCentury Aluminum Company · $2,543 million

GapNot enough peers

Persistence6/8 recent comparable periods

Coverage1/4 companies · 76 observations

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.

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

Revenuelargest

1Century Aluminum Company CENX$2.5B

Revenue growthfastest growers

1Century Aluminum Company CENX7.5%

Revenue · company comparison

1/4 level · 1/4 change

On every company-comparison chart on this page: solid lines show level, dotted lines show change when “Both” is selected, and a missing report breaks the line rather than being invented.

All-company data · latest reported quarter

In every all-company table on this page, each figure is the company’s latest single reported quarter. The rankings above them use trailing-twelve-month or current-market values, so a company can legitimately show a different number in each.

Company	Revenue	Revenue growth	Reported
Alcoa Corporation AA	$3.2B	-5.2%	Jun 2026
Constellium SE CSTM	$2.5B	24%	Jun 2026
Kaiser Aluminum Corporation KALU	$1.1B	42%	Jun 2026
Century Aluminum Company CENX	$649M	2.4%	Mar 2026

Full 20-quarter history · every available company

Revenue · reported quarter history

Alcoa Corporation · AA

Sep 2021$1.3B

Dec 2021$8.5B

Mar 2022$3.3B

Jun 2022$1.4B

Sep 2022$1.4B

Dec 2022$8.3B

Mar 2023$1.6B

Jun 2023$2.7B

Sep 2023$1.7B

Dec 2023$5.6B

Mar 2024$1.8B

Jun 2024$2.9B

Sep 2024$1.8B

Dec 2024$6.4B

Mar 2025$3.4B

Jun 2025$3.0B

Sep 2025$2.1B

Dec 2025$6.7B

Mar 2026$3.2B

Jun 2026—

Century Aluminum Company · CENX

Sep 2021$581M

Dec 2021$659M

Mar 2022$754M

Jun 2022$857M

Sep 2022$637M

Dec 2022$530M

Mar 2023$552M

Jun 2023$576M

Sep 2023$545M

Dec 2023$512M

Mar 2024$490M

Jun 2024$561M

Sep 2024$539M

Dec 2024$631M

Mar 2025$634M

Jun 2025$628M

Sep 2025$632M

Dec 2025$634M

Mar 2026$649M

Jun 2026—

Constellium SE · CSTM

Sep 2021$1.8B

Dec 2021$1.9B

Mar 2022$2.2B

Jun 2022$2.4B

Sep 2022$2.0B

Dec 2022$2.0B

Mar 2023$2.1B

Jun 2023$2.1B

Sep 2023$1.8B

Dec 2023$1.8B

Mar 2024$1.9B

Jun 2024$1.9B

Sep 2024$1.8B

Dec 2024$1.7B

Mar 2025$2.0B

Jun 2025$2.1B

Sep 2025$2.2B

Dec 2025$2.2B

Mar 2026$2.5B

Jun 2026—

Kaiser Aluminum Corporation · KALU

Sep 2021$751M

Dec 2021$806M

Mar 2022$949M

Jun 2022$954M

Sep 2022$749M

Dec 2022$776M

Mar 2023$808M

Jun 2023$814M

Sep 2023$744M

Dec 2023$722M

Mar 2024$738M

Jun 2024$773M

Sep 2024$748M

Dec 2024$765M

Mar 2025$777M

Jun 2025$823M

Sep 2025$844M

Dec 2025$929M

Mar 2026$1.1B

Jun 2026—

Revenue growth · reported quarter history

Alcoa Corporation · AA

Sep 2021—

Dec 2021—

Mar 2022—

Jun 202217%

Sep 202212%

Dec 2022-1.9%

Mar 2023-51%

Jun 202393%

Sep 202316%

Dec 2023-32%

Mar 202414%

Jun 20248.3%

Sep 202411%

Dec 202413%

Mar 202585%

Jun 20253.9%

Sep 202514%

Dec 20256.2%

Mar 2026-5.2%

Jun 2026—

Century Aluminum Company · CENX

Sep 2021—

Dec 2021—

Mar 2022—

Jun 202262%

Sep 20229.6%

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 202423%

Mar 202529%

Jun 202512%

Sep 202517%

Dec 20250.5%

Mar 20262.4%

Jun 2026—

Constellium SE · CSTM

Sep 2021—

Dec 2021—

Mar 2022—

Jun 202232%

Sep 20228.0%

Dec 20222.0%

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 20255.3%

Jun 20258.9%

Sep 202520%

Dec 202528%

Mar 202624%

Jun 2026—

Kaiser Aluminum Corporation · KALU

Sep 2021—

Dec 2021—

Mar 2022—

Jun 202229%

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 20240.5%

Dec 20246.0%

Mar 20255.3%

Jun 20256.5%

Sep 202513%

Dec 202521%

Mar 202642%

Jun 2026—

06 · compare level, then change

Operating Economics & Margin Trend

Century Aluminum Company has the highest OPM among the 4 Aluminum companies compared here, at 57.6%. Alcoa Corporation is next at 12.8%. The same company also holds the highest Margin change, at +50.8 percentage points. 4 of 4 companies report a comparable reading, the latest through Mar 2026. Its OPM series carries 19 reported observations across the 20-quarter window.

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

LeaderCentury Aluminum Company · 57.6%

Gap350% versus #2 · Alcoa Corporation

Persistence6/8 recent comparable periods

Coverage4/4 companies · 76 observations

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.

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

OPMhighest

1Century Aluminum Company CENX58%

2Alcoa Corporation AA13%

3Constellium SE CSTM12%

4Kaiser Aluminum Corporation KALU8.8%

Margin changefastest expanders

1Century Aluminum Company CENX+50.8 pp

2Constellium SE CSTM+7.7 pp

3Kaiser Aluminum Corporation KALU+3.5 pp

4Alcoa Corporation AA−7.8 pp

Operating margin · company comparison

4/4 level · 4/4 change

All-company data · latest reported quarter

Company	OPM	Margin change	Reported
Century Aluminum Company CENX	58%	+50.8 pp	Mar 2026
Alcoa Corporation AA	13%	−7.8 pp	Jun 2026
Constellium SE CSTM	12%	+7.7 pp	Jun 2026
Kaiser Aluminum Corporation KALU	8.8%	+3.5 pp	Jun 2026

Full 20-quarter history · every available company

OPM · reported quarter history

Alcoa Corporation · AA

Sep 202122%

Dec 202123%

Mar 202224%

Jun 202223%

Sep 202221%

Dec 202213%

Mar 202322%

Jun 2023-2.5%

Sep 202323%

Dec 2023-11%

Mar 202424%

Jun 20243.8%

Sep 202427%

Dec 2024-1.8%

Mar 202521%

Jun 20253.5%

Sep 202529%

Dec 20251.3%

Mar 202613%

Jun 2026—

Century Aluminum Company · CENX

Sep 20216.9%

Dec 20217.7%

Mar 202211%

Jun 2022-18%

Sep 2022-8.1%

Dec 2022-5.8%

Mar 20235.0%

Jun 2023-0.1%

Sep 2023-4.4%

Dec 20235.7%

Mar 20240.4%

Jun 20241.1%

Sep 202412%

Dec 20245.8%

Mar 20256.8%

Jun 20253.3%

Sep 20259.2%

Dec 20255.2%

Mar 202658%

Jun 2026—

Constellium SE · CSTM

Sep 20219.6%

Dec 20212.9%

Mar 202213%

Jun 2022-0.2%

Sep 20221.5%

Dec 20223.3%

Mar 20233.2%

Jun 20234.1%

Sep 20236.9%

Dec 20234.8%

Mar 20243.0%

Jun 20246.7%

Sep 20242.8%

Dec 20240.9%

Mar 20254.5%

Jun 20254.0%

Sep 20257.1%

Dec 20258.6%

Mar 202612%

Jun 2026—

Kaiser Aluminum Corporation · KALU

Sep 20212.6%

Dec 20212.1%

Mar 20222.7%

Jun 2022-0.2%

Sep 20220.4%

Dec 2022-2.9%

Mar 20232.4%

Jun 20234.4%

Sep 20232.6%

Dec 20233.0%

Mar 20243.3%

Jun 20242.0%

Sep 20242.3%

Dec 20242.9%

Mar 20255.3%

Jun 20254.6%

Sep 20255.8%

Dec 20256.5%

Mar 20268.8%

Jun 2026—

Margin change · reported quarter history

Alcoa Corporation · 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—

Century Aluminum Company · 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—

Constellium SE · 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—

Kaiser Aluminum Corporation · 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—

07 · compare level, then change

Profit Scale & Acceleration

Century Aluminum Company has the highest Net profit among the 4 Aluminum companies compared here, at $361 million. The same company also holds the highest Profit growth, at the 100% top of the scoring scale. 1 of 4 companies report a comparable reading, the latest through Mar 2026. Its Net profit series carries 19 reported observations across the 20-quarter window.

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.

LeaderCentury Aluminum Company · $361 million

GapNot enough peers

Persistence2/8 recent comparable periods

Coverage1/4 companies · 76 observations

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.

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 profitlargest

1Century Aluminum Company CENX$361M

Profit growthfastest growers

1Century Aluminum Company CENX100%

Net profit · company comparison

1/4 level · 1/4 change

All-company data · latest reported quarter

Company	Net profit	Profit growth	Reported
Alcoa Corporation AA	$417M	-24%	Jun 2026
Century Aluminum Company CENX	$327M	1,386%	Mar 2026
Constellium SE CSTM	$196M	416%	Jun 2026
Kaiser Aluminum Corporation KALU	$63M	186%	Jun 2026

Full 20-quarter history · every available company

Net profit · reported quarter history

Alcoa Corporation · AA

Sep 2021$281M

Dec 2021$1.9B

Mar 2022$763M

Jun 2022$315M

Sep 2022$297M

Dec 2022$1.1B

Mar 2023$355M

Jun 2023$-121M

Sep 2023$379M

Dec 2023$-616M

Mar 2024$436M

Jun 2024$31M

Sep 2024$488M

Dec 2024$150M

Mar 2025$548M

Jun 2025$151M

Sep 2025$614M

Dec 2025$87M

Mar 2026$417M

Jun 2026—

Century Aluminum Company · CENX

Sep 2021$-52M

Dec 2021$34M

Mar 2022$18M

Jun 2022$37M

Sep 2022$44M

Dec 2022$-23M

Mar 2023$-39M

Jun 2023$7M

Sep 2023$-46M

Dec 2023$21M

Mar 2024$245M

Jun 2024$-7M

Sep 2024$42M

Dec 2024$21M

Mar 2025$22M

Jun 2025$-9M

Sep 2025$11M

Dec 2025$32M

Mar 2026$327M

Jun 2026—

Constellium SE · CSTM

Sep 2021$115M

Dec 2021$8M

Mar 2022$198M

Jun 2022$-34M

Sep 2022$128M

Dec 2022$32M

Mar 2023$24M

Jun 2023$35M

Sep 2023$68M

Dec 2023$12M

Mar 2024$22M

Jun 2024$77M

Sep 2024$8M

Dec 2024$-33M

Mar 2025$38M

Jun 2025$36M

Sep 2025$88M

Dec 2025$113M

Mar 2026$196M

Jun 2026—

Kaiser Aluminum Corporation · KALU

Sep 2021$-2M

Dec 2021$2M

Mar 2022$8M

Jun 2022$-14M

Sep 2022$3M

Dec 2022$-26M

Mar 2023$16M

Jun 2023$18M

Sep 2023$5M

Dec 2023$8M

Mar 2024$18M

Jun 2024$3M

Sep 2024$12M

Dec 2024$7M

Mar 2025$22M

Jun 2025$23M

Sep 2025$40M

Dec 2025$28M

Mar 2026$63M

Jun 2026—

Profit growth · reported quarter history

Alcoa Corporation · AA

Sep 2021—

Dec 2021—

Mar 2022—

Jun 202213%

Sep 20225.7%

Dec 2022-43%

Mar 2023-53%

Jun 2023-138%

Sep 202328%

Dec 2023-156%

Mar 202423%

Jun 2024—

Sep 202429%

Dec 2024—

Mar 202526%

Jun 2025387%

Sep 202526%

Dec 2025-42%

Mar 2026-24%

Jun 2026—

Century Aluminum Company · 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 20240.0%

Mar 2025-91%

Jun 2025—

Sep 2025-74%

Dec 202552%

Mar 20261,386%

Jun 2026—

Constellium SE · CSTM

Sep 2021—

Dec 2021—

Mar 2022—

Jun 2022-127%

Sep 202211%

Dec 2022300%

Mar 2023-88%

Jun 2023—

Sep 2023-47%

Dec 2023-63%

Mar 2024-8.3%

Jun 2024120%

Sep 2024-88%

Dec 2024-375%

Mar 202573%

Jun 2025-53%

Sep 20251,000%

Dec 2025—

Mar 2026416%

Jun 2026—

Kaiser Aluminum Corporation · KALU

Sep 2021—

Dec 2021—

Mar 2022—

Jun 2022—

Sep 2022—

Dec 2022-1,400%

Mar 2023100%

Jun 2023—

Sep 202367%

Dec 2023—

Mar 202413%

Jun 2024-83%

Sep 2024140%

Dec 2024-13%

Mar 202522%

Jun 2025667%

Sep 2025233%

Dec 2025300%

Mar 2026186%

Jun 2026—

08 · compare level, then change

Return On Capital Employed

Century Aluminum Company has the highest ROCE among the 4 Aluminum companies compared here, at 20.7%. Constellium SE is next at 6.7%. The same company also holds the highest ROCE change, at +17.7 percentage points. 4 of 4 companies report a comparable reading, the latest through Mar 2026. Its ROCE series carries 19 reported observations across the 20-quarter window.

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.

LeaderCentury Aluminum Company · 20.7%

Gap209% versus #2 · Constellium SE

Persistence6/8 recent comparable periods

Coverage4/4 companies · 79 observations

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.

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.

ROCEhighest

1Century Aluminum Company CENX21%

2Constellium SE CSTM6.7%

3Kaiser Aluminum Corporation KALU6.1%

4Alcoa Corporation AA5.8%

ROCE changefastest improvers

1Century Aluminum Company CENX+17.7 pp

2Alcoa Corporation AA+4.9 pp

3Constellium SE CSTM+4.3 pp

4Kaiser Aluminum Corporation KALU+4.2 pp

Return on capital · company comparison

4/4 level · 4/4 change

All-company data · latest reported quarter

Company	ROCE	ROCE change	Reported
Century Aluminum Company CENX	21%	+17.7 pp	Mar 2026
Constellium SE CSTM	6.7%	+4.3 pp	Jun 2026
Kaiser Aluminum Corporation KALU	6.1%	+4.2 pp	Jun 2026
Alcoa Corporation AA	5.8%	+4.9 pp	Jun 2026

Full 20-quarter history · every available company

ROCE · reported quarter history

Alcoa Corporation · AA

Sep 20213.0%

Dec 202116%

Mar 20227.1%

Jun 20223.5%

Sep 20223.4%

Dec 20229.3%

Mar 20232.9%

Jun 2023-0.8%

Sep 20234.4%

Dec 2023-5.4%

Mar 20244.3%

Jun 20241.1%

Sep 20245.5%

Dec 20241.0%

Mar 20257.7%

Jun 20250.9%

Sep 20256.6%

Dec 20250.8%

Mar 20263.7%

Jun 20265.8%

Century Aluminum Company · CENX

Sep 20213.7%

Dec 20214.6%

Mar 20227.7%

Jun 2022-14%

Sep 2022-4.8%

Dec 2022-2.9%

Mar 20232.6%

Jun 2023-0.1%

Sep 2023-2.1%

Dec 20232.7%

Mar 20240.2%

Jun 20240.5%

Sep 20245.0%

Dec 20243.6%

Mar 20253.0%

Jun 20251.4%

Sep 20253.9%

Dec 20251.9%

Mar 202621%

Jun 2026—

Constellium SE · CSTM

Sep 20215.0%

Dec 20211.6%

Mar 20227.9%

Jun 2022-0.1%

Sep 20220.9%

Dec 20221.9%

Mar 20232.0%

Jun 20232.5%

Sep 20233.6%

Dec 20232.5%

Mar 20241.6%

Jun 20243.6%

Sep 20241.4%

Dec 20240.5%

Mar 20252.6%

Jun 20252.4%

Sep 20254.3%

Dec 20255.6%

Mar 20268.5%

Jun 20266.7%

Kaiser Aluminum Corporation · KALU

Sep 20211.1%

Dec 20210.9%

Mar 20221.3%

Jun 2022-0.1%

Sep 20220.2%

Dec 2022-1.2%

Mar 20231.0%

Jun 20231.9%

Sep 20231.0%

Dec 20231.2%

Mar 20241.3%

Jun 20240.8%

Sep 20240.9%

Dec 20241.1%

Mar 20252.1%

Jun 20251.9%

Sep 20252.4%

Dec 20252.9%

Mar 20264.6%

Jun 20266.1%

ROCE change · reported quarter history

Alcoa Corporation · 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

Century Aluminum Company · 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—

Constellium SE · 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

Kaiser Aluminum Corporation · 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

09 · compare level, then change

Valuation Against Growth & Quality

No company in this Aluminum comparison reports a valuation figure this section can compare, so the PEG rank is empty. On P/E, Constellium SE is lowest at 8.21×, across 4 of 4 companies with a usable reading. PEG asks what price is being paid for growth; P/E keeps that answer anchored to the actual earnings multiple.

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

LeaderNo comparable leader

GapNot enough peers

PersistenceNot enough history

Coverage0/4 companies · 5 observations

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.

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.

PEGlowest PEG

—Not enough comparable data—

P/Elowest P/E

1Constellium SE CSTM8.2

2Alcoa Corporation AA10.8

3Kaiser Aluminum Corporation KALU14.5

4Century Aluminum Company CENX17.5

Valuation · company comparison

0/4 level · 4/4 change

All-company data · latest reported quarter

Company	PEG	P/E	Reported
Constellium SE CSTM	1.9	8.2	Jun 2026
Alcoa Corporation AA	1.2	10.8	Jun 2026
Kaiser Aluminum Corporation KALU	0.4	14.5	Jun 2026
Century Aluminum Company CENX	—	17.5	Mar 2026

Full 20-quarter history · every available company

PEG · reported quarter history

Alcoa Corporation · 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 20261.2

Jun 2026—

Constellium SE · 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 20251.9

Dec 2025—

Mar 2026—

Jun 2026—

Kaiser Aluminum Corporation · 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 20240.5

Mar 20250.4

Jun 20250.4

Sep 2025—

Dec 2025—

Mar 2026—

Jun 2026—

P/E · reported quarter history

Alcoa Corporation · AA

Sep 202135.0

Dec 202126.4

Mar 202231.0

Jun 202214.8

Sep 202210.5

Dec 2022—

Mar 202337.0

Jun 2023147.5

Sep 202359.3

Dec 2023—

Mar 202432.5

Jun 202423.1

Sep 202418.6

Dec 2024145.3

Mar 20258.1

Jun 20256.9

Sep 20257.6

Dec 202512.2

Mar 202617.0

Jun 202610.8

Century Aluminum Company · CENX

Sep 2021—

Dec 2021—

Mar 2022—

Jun 202213.4

Sep 20223.4

Dec 2022—

Mar 2023—

Jun 2023—

Sep 2023—

Dec 2023—

Mar 20247.1

Jun 20248.1

Sep 20245.4

Dec 20245.6

Mar 202516.0

Jun 202515.8

Sep 202535.4

Dec 202593.3

Mar 202617.5

Jun 2026—

Constellium SE · CSTM

Sep 20218.5

Dec 20219.0

Mar 20226.0

Jun 20227.0

Sep 20225.1

Dec 20225.6

Mar 202315.8

Jun 202311.9

Sep 202317.3

Dec 202319.4

Mar 202426.0

Jun 202416.7

Sep 202422.6

Dec 202427.0

Mar 202521.0

Jun 202560.5

Sep 202518.8

Dec 20259.8

Mar 20268.0

Jun 20268.2

Kaiser Aluminum Corporation · KALU

Sep 2021—

Dec 2021—

Mar 2022—

Jun 2022—

Sep 2022—

Dec 2022—

Mar 2023—

Jun 202345.3

Sep 202342.8

Dec 202316.9

Mar 202429.1

Jun 202428.5

Sep 202422.1

Dec 202417.5

Mar 202514.4

Jun 202517.9

Sep 202512.2

Dec 202517.0

Mar 202613.1

Jun 202614.5

10 · before the conclusion, check the blind spots

What can make this comparison misleading?

This Aluminum comparison names 5 specific ways its own evidence can mislead, all listed below. All 4 companies here report on comparable dates, so no rank carries a stale marker. 3 of the 5 ranked sections have fewer than three usable current readings. A high growth rate can still be a low-base artefact.

Keep these limits visible

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.

11 · evidence and freshness

How was this comparison built?

This comparison is built from the reported filings of 4 Aluminum companies, normalized to a common $ scale and a shared quarter axis of up to 20 quarters each. Fundamentals run through Jun 2026 and market data through 2026-08-04. A second data feed fills gaps only after identity and scale reconciliation, and missing observations are never interpolated.

FundamentalsThrough Jun 2026 · up to 20 quarters per company

Market dataThrough 2026-08-04 · weekly price and relative-strength history

Derived metricsGrowth, changes and PEG are calculated only when their inputs are comparable.

Score confidenceMissing and stale evidence reduces confidence and pulls the 0–100 research-priority score toward neutral.

12 · questions investors ask, short speakable answers

Aluminum company comparison FAQs

These 19 answers restate the Aluminum comparison above in question form. Every one is computed from the same 4 companies and the same reported filings as the rankings and charts, current through Jun 2026. Price and relative-strength answers run through 2026-08-04. Nothing here is estimated, and none of it is a recommendation.

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.