MEC vs CSTM vs MLI Stock Comparison

Mayville Engineering Company, Constellium Se and Mueller Industries Prices as of Oct 28, 2026 Peers: Industry group
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CSTM Constellium Se
$24.44 -0.8% 1M +44.5% 1Y
Market cap
$3.24B
P/E
5.6x
Revenue (TTM)
$10.05B
Div. yield
–
Metal Fabrication Industrials
6 wins
MLI Mueller Industries Inc
$55.30 -9.3% 1M -47.0% 1Y
Market cap
$12.08B
P/E
14.0x
Revenue (TTM)
$5.00B
Div. yield
0.01%
Metal Fabrication Industrials
5 wins

Head to Head

11 decided of 12

Constellium Se leads on 6 of the 12 questions below (Constellium Se 6, Mueller Industries 5). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionMECCSTMMLILeader
Larger companyMarket capitalisation $343.80M $3.24B $12.08B MLI
Cheaper on earningsLower P/E, profitable companies only -19.9x 5.6x 14.0x CSTM
Cheaper on forward earningsLower price / next fiscal year consensus EPS 61.5x 5.8x 13.7x CSTM
Faster revenue growthRevenue growth, trailing twelve months +11.8% +26.1% +20.8% CSTM
More profitableNet margin, trailing twelve months -3.0% 5.7% 17.3% MLI
Better return on capitalReturn on invested capital -1.8% 26.9% 22.7% CSTM
Less leveragedLower net debt / EBITDA 3.9x 1.1x -1.3x MLI
Higher dividend yieldTrailing dividend yield 0.00% 0.00% 0.01% –
Better 1-year returnPrice return, last 12 months -11.5% +44.5% -47.0% CSTM
Better 5-year returnAnnualised price return, 5 years -3.6%/yr +5.8%/yr +16.0%/yr MLI
Less volatileAnnualised volatility, 1 year 55.2% 44.8% 131.8% CSTM
Higher overall scoreMean of the five percentile scores vs peers 28/100 75/100 86/100 MLI

Percentile Scorecard

MECCSTMMLI

Each axis is the mean percentile of its metrics against the company's industry group. 100 is the best in the group, 50 the middle.

Scores by Axis

AxisMECCSTMMLI
Valuation 47 #108 of 203 98 #6 of 203 83 #35 of 203
Growth 11 #167 of 188 100 #1 of 188 68 #61 of 188
Profitability 23 #142 of 184 66 #64 of 184 96 #8 of 184
Financial Health 32 #148 of 217 21 #172 of 217 97 #7 of 217
Shareholder Returns – 90 #16 of 153 84 #25 of 153
Overall 28 75 86
  • MEC ranked among 222 companies in Machinery
  • CSTM ranked among 222 companies in Machinery
  • MLI ranked among 222 companies in Machinery

Price Performance

Price return, split-adjusted, before dividends. Click a name to hide or show it.

Returns

PeriodMECCSTMMLISPY
1 month -12.2%-0.8%-9.3% +0.9%
3 months -41.7%-11.4%-15.4% +5.9%
6 months -32.3%-24.2%-58.4% +8.5%
Year to date -21.1%+29.7%-51.8% +13.3%
1 year -11.5%+44.5%-47.0% +12.4%
3 years +37.7%+59.5%+46.2% +88.1%
3 years, per year +11.2%+16.9%+13.5% +23.5%
5 years -16.8%+32.8%+110.1% +68.2%
5 years, per year -3.6%+5.8%+16.0% +11.0%
10 years —+365.5%+268.9% +263.4%
10 years, per year —+16.6%+13.9% +13.8%

Risk

MeasureMECCSTMMLISPY
Volatility, 1Y 55.2%44.8%131.8% 12.7%
Downside volatility, 1Y 53.1%42.0%165.1% 12.7%
Beta vs S&P 500, 1Y 1.581.930.70 1.00
Return / volatility, 1Y -0.210.99-0.36 0.98
Max drawdown, 5Y -66.7%-66.3%-61.6% -25.4%
From 52-week high -60.7%-32.4%-60.7% -0.9%
52-week high $37.54$36.15$140.83 $779.14
52-week low $12.73$14.75$54.11 $631.97

Valuation History

Weekly multiples on trailing twelve-month fundamentals. Negative or extreme readings (a loss year, a collapsed denominator) are left out so the chart stays readable.

MultipleMECCSTMMLI
P/E now vs peer median -19.4xmedian 25.4x 5.7xmedian 25.4x 13.9xmedian 25.4x
P/S now vs peer median 0.6xmedian 1.9x 0.3xmedian 1.9x 2.4xmedian 1.9x
EV/EBITDA now vs peer median 15.8xmedian 14.3x 3.2xmedian 14.3x 9.4xmedian 14.3x
P/FCF now vs peer median -82.4xmedian 21.8x 10.3xmedian 21.8x 17.5xmedian 21.8x
P/B now vs peer median 1.2xmedian 2.2x 2.5xmedian 2.2x 3.4xmedian 2.2x
PEG now vs peer median 0.41median 1.41 —median 1.41 1.09median 1.41

Financial History

Reported figures by fiscal period, placed on the calendar year (or quarter) each period ended in, so companies with different fiscal years line up.

Trailing twelve monthsMECCSTMMLI
Revenue $586.34M $10.05B $5.00B
Gross profit $53.52M $1.61B $1.36B
Operating income -$12.80M $1.20B $1.08B
Net income -$17.30M $576.00M $871.57M
Free cash flow -$4.57M $319.00M $689.59M
R&D – $53.00M –
EPS (diluted) $-0.76 $4.13 $3.92
Cash & equivalents $2.20M $158.00M $1.45B
Total debt $752.49M $1.82B $5.24M
Shares (diluted) 22.77M 138.99M 220.12M
Enterprise value $336.81M $2.65B $6.39B

All Metrics

58 metrics · best in bold

Bold marks the best reading: the lowest positive value for multiples, leverage and payout, the highest for everything else. The bar under each value is its percentile against that company's own peers. Hover a value for its rank and the peer median.

Valuation

12 metrics
MetricMECCSTMMLI
P/E -19.4x 5.7x 13.9x
P/FCF -82.4x 10.3x 17.5x
P/Operating cash flow 27.0x 5.2x 15.7x
P/S 0.6x 0.3x 2.4x
P/B 1.2x 2.5x 3.4x
P/Tangible book 1.7x 2.6x 3.8x
EV/EBITDA 15.8x 3.2x 9.4x
EV/EBIT -39.1x 4.1x 9.8x
EV/Revenue 0.9x 0.5x 2.1x
EV/FCF -109.4x 15.5x 15.3x
EV/Operating cash flow 35.9x 7.8x 13.7x
PEG (3Y EPS CAGR) 0.41 – 1.09

Growth

14 metrics
MetricMECCSTMMLI
Revenue growth (1Y) 11.8% 26.1% 20.8%
Revenue CAGR (3Y) 2.4% – 11.9%
Gross profit growth (1Y) -5.8% 54.0% 11.7%
Gross profit CAGR (3Y) -4.2% – 9.2%
Operating income growth (1Y) -142.1% 82.1% 12.4%
Operating income CAGR (3Y) -37.8% – 9.9%
Net income growth (1Y) -196.8% 400.9% 14.9%
Net income CAGR (3Y) -49.1% – 11.4%
EPS growth (1Y) -188.0% 413.6% 16.2%
EPS CAGR (3Y) -47.4% – 12.8%
Operating cash flow growth (1Y) -82.4% 92.2% 2.1%
Operating cash flow CAGR (3Y) -23.3% – 3.0%
Free cash flow growth (1Y) -106.7% 897.5% 1.9%
Free cash flow CAGR (3Y) 16.0% – 1.6%

Profitability

14 metrics
MetricMECCSTMMLI
Gross margin 9.1% 16.1% 27.3%
EBITDA margin 5.4% 15.3% 22.5%
Operating margin -2.2% 11.9% 21.5%
Pretax margin -4.7% 8.1% 22.8%
Net margin -3.0% 5.7% 17.3%
FCF margin -0.8% 3.2% 13.8%
Operating cash flow margin 2.4% 6.3% 15.4%
Return on equity -6.2% 44.4% 24.5%
Return on assets -3.0% 9.7% 20.4%
Return on invested capital -1.8% 26.9% 22.7%
Return on capital employed -2.6% 31.0% 29.7%
Asset turnover 1.0x 1.7x 1.2x
Cash conversion (OCF / net income) -0.8x 1.1x 0.9x
Stock comp / revenue 0.6% – 0.6%

Financial Health

11 metrics
MetricMECCSTMMLI
Debt / assets 21.4% 31.0% 0.1%
Debt / equity 0.4x 1.4x 0.0x
Net debt / EBITDA 3.9x 1.1x -1.3x
Debt / FCF -27.5x 5.7x 0.0x
Liabilities / assets 44.7% 77.1% 17.6%
Equity / assets 55.3% 22.9% 82.4%
Interest coverage -0.9x 11.0x 3,260x
Current ratio 1.7x 1.5x 4.4x
Quick ratio 0.9x 0.6x 3.4x
Cash ratio 0.0x 0.1x 2.3x
Altman Z-score 2.02 3.22 13.61

Shareholder Returns

7 metrics
MetricMECCSTMMLI
Dividend yield – – 0.8%
Net buyback yield – 3.6% 2.3%
Shareholder yield – 3.6% 3.1%
Payout ratio (earnings) – – 16.2%
Payout ratio (FCF) – – 20.5%
Dividend growth (1Y) – – 35.7%
Dividend CAGR (3Y) – – 30.2%

Analyst Estimates

Solid lines are reported fiscal-year results; dashed lines are the consensus for the years ahead. Hover a year for the analysts' high and low, and how each result compared with its estimate.

ConsensusMECCSTMMLI
Forward P/E 61.5xFY2026 5.8xFY2026 13.7xFY2026
EPS, next fiscal year $0.24FY2026 $4.18FY2026 $4.03FY2026
EPS growth, next FY -22.6%FY2026 +237.1%FY2026 +17.5%FY2026
EPS growth, the year after +354.2% -32.3% +10.2%
Revenue, next fiscal year $666.72MFY2026 $10.71BFY2026 $5.04BFY2026
Revenue growth, next FY +22.0%FY2026 +26.8%FY2026 +20.5%FY2026
Revenue growth, the year after +4.5% +1.3% +10.9%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersMECCSTMMLI
Held by institutions 83.1% 88.6% 95.3%
Institutions holding 156 384 738
Change in shares held, QoQ +47.1% -4.5% +6.5%
Institutions buying 98 255 419
Institutions selling 40 108 226
Buyers to sellers 2.45 2.36 1.85

Return Correlation

Daily returns, last 12 months

1.00 means two stocks move in lockstep, 0 that they move independently. Pairs below about 0.5 diversify each other.

MECCSTMMLI
MEC 1.00 0.35 0.13
CSTM 0.35 1.00 0.22
MLI 0.13 0.22 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, MEC, CSTM and MLI?

Mueller Industries (MLI) is the largest by market capitalisation: Mayville Engineering Company (MEC) $343.80M, Constellium Se (CSTM) $3.24B, Mueller Industries (MLI) $12.08B.

Which stock is cheaper, MEC, CSTM and MLI?

Constellium Se (CSTM) trades on the lowest price-to-earnings ratio (Mayville Engineering Company (MEC) -19.9x, Constellium Se (CSTM) 5.6x, Mueller Industries (MLI) 14.0x). On next year's consensus earnings, Constellium Se (CSTM) is cheapest (Mayville Engineering Company (MEC) 61.5x, Constellium Se (CSTM) 5.8x, Mueller Industries (MLI) 13.7x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

Constellium Se (CSTM) grew revenue fastest over the trailing twelve months: Mayville Engineering Company (MEC) +11.8%, Constellium Se (CSTM) +26.1%, Mueller Industries (MLI) +20.8%.

Which company is more profitable?

Mueller Industries (MLI) has the highest net margin (Mayville Engineering Company (MEC) -3.0%, Constellium Se (CSTM) 5.7%, Mueller Industries (MLI) 17.3%). On return on invested capital, Constellium Se (CSTM) leads (Mayville Engineering Company (MEC) -1.8%, Constellium Se (CSTM) 26.9%, Mueller Industries (MLI) 22.7%).

Which stock has performed better?

Over the past year Constellium Se (CSTM) returned the most: Mayville Engineering Company (MEC) -11.5%, Constellium Se (CSTM) +44.5%, Mueller Industries (MLI) -47.0%. Over five years, Mueller Industries (MLI) compounded fastest (Mayville Engineering Company (MEC) -3.6%/yr, Constellium Se (CSTM) +5.8%/yr, Mueller Industries (MLI) +16.0%/yr). Returns are price only, before dividends.

Which pays a higher dividend?

Only one of these companies pays a dividend: Mayville Engineering Company (MEC) 0.00%, Constellium Se (CSTM) 0.00%, Mueller Industries (MLI) 0.01%. Mayville Engineering Company (MEC) and Constellium Se (CSTM) pays no regular dividend.

Which stock is riskier?

By one-year price volatility, Constellium Se (CSTM) has been the steadiest (Mayville Engineering Company (MEC) 55.2%, Constellium Se (CSTM) 44.8%, Mueller Industries (MLI) 131.8%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, MEC, CSTM and MLI?

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, Constellium Se (CSTM) leads on 6. Business Quant does not give investment advice; use the comparison as a starting point for your own research.

Data from SEC filings, exchange prices and consensus estimates, via Business Quant. Percentile scores compare each company with its own peer group, so two companies' scores are each relative to different peers unless you rank against the whole market. Price returns exclude dividends. Nothing on this page is investment advice.