MEC vs CSTM vs IIIN Stock Comparison

Mayville Engineering Company, Constellium Se and Insteel Industries Prices as of Oct 27, 2026 Peers: Industry group
CSTM Constellium Se
$24.54 -1.5% 1M +45.6% 1Y
Market cap
$3.27B
P/E
6.0x
Revenue (TTM)
$9.58B
Div. yield
–
Metal Fabrication Industrials
10 wins
IIIN Insteel Industries Inc
$28.36 -3.8% 1M -7.4% 1Y
Market cap
$542.71M
P/E
18.4x
Revenue (TTM)
$739.51M
Div. yield
–
Metal Fabrication Industrials
1 win

Head to Head

11 decided of 12

Constellium Se leads on 10 of the 12 questions below (Constellium Se 10, Insteel Industries 1). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionMECCSTMIIINLeader
Larger companyMarket capitalisation $331.16M $3.27B $542.71M CSTM
Cheaper on earningsLower P/E, profitable companies only -19.1x 6.0x 18.4x CSTM
Cheaper on forward earningsLower price / next fiscal year consensus EPS 57.5x 5.9x 13.8x CSTM
Faster revenue growthRevenue growth, trailing twelve months +11.8% +25.9% +14.2% CSTM
More profitableNet margin, trailing twelve months -3.0% 5.7% — CSTM
Better return on capitalReturn on invested capital -1.8% 25.6% — CSTM
Less leveragedLower net debt / EBITDA 3.9x 1.2x — CSTM
Higher dividend yieldTrailing dividend yield 0.00% 0.00% 0.00% –
Better 1-year returnPrice return, last 12 months -16.4% +45.6% -7.4% CSTM
Better 5-year returnAnnualised price return, 5 years -5.1%/yr +5.2%/yr -6.9%/yr CSTM
Less volatileAnnualised volatility, 1 year 54.8% 44.8% 41.4% IIIN
Higher overall scoreMean of the five percentile scores vs peers 28/100 74/100 68/100 CSTM

Percentile Scorecard

MECCSTMIIIN

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

AxisMECCSTMIIIN
Valuation 48 #107 of 203 97 #8 of 203 84 #34 of 203
Growth 11 #168 of 188 97 #6 of 188 32 #129 of 188
Profitability 23 #141 of 183 65 #64 of 183 63 #68 of 183
Financial Health 31 #150 of 217 19 #176 of 217 –
Shareholder Returns – 90 #16 of 153 95 #9 of 153
Overall 28 74 68
  • MEC ranked among 222 companies in Machinery
  • CSTM ranked among 222 companies in Machinery
  • IIIN ranked among 222 companies in Machinery

Price Performance

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

Returns

PeriodMECCSTMIIINSPY
1 month -19.7%-1.5%-3.8% -0.2%
3 months -50.3%-15.6%-13.0% +3.9%
6 months -37.0%-21.0%+12.1% +8.2%
Year to date -26.3%+30.2%-10.5% +12.9%
1 year -16.4%+45.6%-7.4% +12.3%
3 years +28.6%+60.2%+5.1% +87.4%
3 years, per year +8.8%+17.0%+1.7% +23.3%
5 years -23.2%+28.8%-29.9% +67.9%
5 years, per year -5.1%+5.2%-6.9% +10.9%
10 years —+371.9%+8.6% +261.1%
10 years, per year —+16.8%+0.8% +13.7%

Risk

MeasureMECCSTMIIINSPY
Volatility, 1Y 54.8%44.8%41.4% 12.7%
Downside volatility, 1Y 53.1%42.1%51.3% 12.7%
Beta vs S&P 500, 1Y 1.571.940.98 1.00
Return / volatility, 1Y -0.301.02-0.18 0.97
Max drawdown, 5Y -66.7%-66.3%-49.9% -25.4%
From 52-week high -63.2%-32.1%-25.6% -1.2%
52-week high $37.54$36.15$38.11 $779.14
52-week low $12.73$14.75$24.48 $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.

MultipleMECCSTMIIIN
P/E now vs peer median -18.2xmedian 25.2x 6.1xmedian 25.2x 18.7xmedian 25.2x
P/S now vs peer median 0.6xmedian 1.9x 0.3xmedian 1.9x 0.7xmedian 1.9x
EV/EBITDA now vs peer median 15.1xmedian 14.0x 3.4xmedian 14.0x —median 14.0x
P/FCF now vs peer median -77.0xmedian 21.7x 15.3xmedian 21.7x -58.5xmedian 21.7x
P/B now vs peer median 1.1xmedian 2.3x 2.7xmedian 2.3x 1.4xmedian 2.3x
PEG now vs peer median 0.38median 1.32 0.07median 1.32 -6.39median 1.32

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 monthsMECCSTMIIIN
Revenue $586.34M $9.58B $739.51M
Gross profit $53.52M $1.56B $75.68M
Operating income -$12.80M $1.14B –
Net income -$17.30M $545.00M $29.55M
Free cash flow -$4.57M $218.00M –
R&D – $53.00M –
EPS (diluted) $-0.76 $3.89 $1.52
Cash & equivalents $2.20M $163.00M $37.48M
Total debt $752.49M $1.92B –
Shares (diluted) 22.77M 140.15M 19.49M
Enterprise value $324.17M $2.72B $542.71M

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
MetricMECCSTMIIIN
P/E -18.2x 6.1x 18.7x
P/FCF -77.0x 15.3x -58.5x
P/Operating cash flow 25.3x 6.0x 15.1x
P/S 0.6x 0.3x 0.7x
P/B 1.1x 2.7x 1.4x
P/Tangible book 1.6x 2.8x 1.5x
EV/EBITDA 15.1x 3.4x –
EV/EBIT -37.1x 4.4x –
EV/Revenue 0.8x 0.5x 0.7x
EV/FCF -104.0x 23.3x –
EV/Operating cash flow 34.1x 9.2x 15.1x
PEG (3Y EPS CAGR) 0.38 0.07 -6.39

Growth

14 metrics
MetricMECCSTMIIIN
Revenue growth (1Y) 11.8% 25.9% 14.2%
Revenue CAGR (3Y) 2.4% 6.3% 4.4%
Gross profit growth (1Y) -5.8% 66.2% -19.0%
Gross profit CAGR (3Y) -4.2% 21.4% 5.0%
Operating income growth (1Y) -142.1% 101.1% –
Operating income CAGR (3Y) -37.8% 27.0% –
Net income growth (1Y) -196.8% 1,457% -28.0%
Net income CAGR (3Y) -49.1% 19.3% -3.0%
EPS growth (1Y) -188.0% 1,629% -27.7%
EPS CAGR (3Y) -47.4% 85.0% -2.9%
Operating cash flow growth (1Y) -82.4% 84.9% 33.5%
Operating cash flow CAGR (3Y) -23.3% – -36.6%
Free cash flow growth (1Y) -106.7% 311.7% –
Free cash flow CAGR (3Y) 16.0% – –

Profitability

14 metrics
MetricMECCSTMIIIN
Gross margin 9.1% 16.3% –
EBITDA margin 5.4% 15.5% –
Operating margin -2.2% 11.9% –
Pretax margin -4.7% 8.1% –
Net margin -3.0% 5.7% –
FCF margin -0.8% 2.3% –
Operating cash flow margin 2.4% 5.8% 4.9%
Return on equity -6.2% 45.7% 7.9%
Return on assets -3.0% 9.1% 6.2%
Return on invested capital -1.8% 25.6% –
Return on capital employed -2.6% 31.2% –
Asset turnover 1.0x 1.6x 1.5x
Cash conversion (OCF / net income) -0.8x 1.0x 1.2x
Stock comp / revenue 0.6% – 0.5%

Financial Health

11 metrics
MetricMECCSTMIIIN
Debt / assets 21.4% 31.7% –
Debt / equity 0.4x 1.5x –
Net debt / EBITDA 3.9x 1.2x –
Debt / FCF -27.5x 8.8x –
Liabilities / assets 44.7% 79.3% –
Equity / assets 55.3% 20.7% 79.0%
Interest coverage -0.9x 10.5x –
Current ratio 1.7x 1.4x 3.7x
Quick ratio 0.9x 0.6x –
Cash ratio 0.0x 0.1x –
Altman Z-score 1.96 2.96 –

Shareholder Returns

7 metrics
MetricMECCSTMIIIN
Dividend yield – – 3.9%
Net buyback yield – 3.4% –
Shareholder yield – 3.4% 3.9%
Payout ratio (earnings) – – –
Payout ratio (FCF) – – –
Dividend growth (1Y) – – –
Dividend CAGR (3Y) – – –

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.

ConsensusMECCSTMIIIN
Forward P/E 57.5xFY2026 5.9xFY2026 13.8xFY2027
EPS, next fiscal year $0.24FY2026 $4.18FY2026 $2.05FY2027
EPS growth, next FY -22.6%FY2026 +237.1%FY2026 +35.8%FY2027
EPS growth, the year after +354.2% -32.3% +7.8%
Revenue, next fiscal year $666.72MFY2026 $10.71BFY2026 $759.46MFY2027
Revenue growth, next FY +22.0%FY2026 +26.8%FY2026 +2.7%FY2027
Revenue growth, the year after +4.5% +1.3% +4.4%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersMECCSTMIIIN
Held by institutions 83.1% 88.6% 82.1%
Institutions holding 156 384 187
Change in shares held, QoQ +47.1% -4.5% +0.9%
Institutions buying 98 255 122
Institutions selling 40 108 48
Buyers to sellers 2.45 2.36 2.54

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.

MECCSTMIIIN
MEC 1.00 0.36 0.25
CSTM 0.36 1.00 0.32
IIIN 0.25 0.32 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, MEC, CSTM and IIIN?

Constellium Se (CSTM) is the largest by market capitalisation: Mayville Engineering Company (MEC) $331.16M, Constellium Se (CSTM) $3.27B, Insteel Industries (IIIN) $542.71M.

Which stock is cheaper, MEC, CSTM and IIIN?

Constellium Se (CSTM) trades on the lowest price-to-earnings ratio (Mayville Engineering Company (MEC) -19.1x, Constellium Se (CSTM) 6.0x, Insteel Industries (IIIN) 18.4x). On next year's consensus earnings, Constellium Se (CSTM) is cheapest (Mayville Engineering Company (MEC) 57.5x, Constellium Se (CSTM) 5.9x, Insteel Industries (IIIN) 13.8x). 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) +25.9%, Insteel Industries (IIIN) +14.2%.

Which company is more profitable?

Constellium Se (CSTM) has the highest net margin (Mayville Engineering Company (MEC) -3.0%, Constellium Se (CSTM) 5.7%). On return on invested capital, Constellium Se (CSTM) leads (Mayville Engineering Company (MEC) -1.8%, Constellium Se (CSTM) 25.6%).

Which stock has performed better?

Over the past year Constellium Se (CSTM) returned the most: Mayville Engineering Company (MEC) -16.4%, Constellium Se (CSTM) +45.6%, Insteel Industries (IIIN) -7.4%. Over five years, Constellium Se (CSTM) compounded fastest (Mayville Engineering Company (MEC) -5.1%/yr, Constellium Se (CSTM) +5.2%/yr, Insteel Industries (IIIN) -6.9%/yr). Returns are price only, before dividends.

Which stock is riskier?

By one-year price volatility, Insteel Industries (IIIN) has been the steadiest (Mayville Engineering Company (MEC) 54.8%, Constellium Se (CSTM) 44.8%, Insteel Industries (IIIN) 41.4%). Volatility measures how widely the price swings, not the risk of the business.

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

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 10. 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.