ACM vs STN vs IBP Stock Comparison

Aecom, Stantec and Installed Building Products Prices as of Oct 23, 2026 Peers: Industry group
ACM Aecom
$60.48 -1.6% 1M -54.4% 1Y
Market cap
$7.80B
P/E
27.1x
Revenue (TTM)
$15.39B
Div. yield
–
Engineering and Construction Industrials
1 win
STN Stantec Inc
$71.13 +0.6% 1M -36.4% 1Y
Market cap
$8.10B
P/E
12.4x
Revenue (TTM)
$10.51B
Div. yield
–
Engineering and Construction Industrials
7 wins

Head to Head

11 decided of 12

Stantec leads on 7 of the 12 questions below (Stantec 7, Installed Building Products 3, Aecom 1). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionACMSTNIBPLeader
Larger companyMarket capitalisation $7.80B $8.10B $5.38B STN
Cheaper on earningsLower P/E, profitable companies only 27.1x 12.4x 21.5x STN
Cheaper on forward earningsLower price / next fiscal year consensus EPS 14.4x 15.6x 19.7x ACM
Faster revenue growthRevenue growth, trailing twelve months -4.2% +9.4% +0.3% STN
More profitableNet margin, trailing twelve months 1.9% 6.2% 8.5% IBP
Better return on capitalReturn on invested capital 9.9% 37.8% 16.0% STN
Less leveragedLower net debt / EBITDA 2.4x 0.0x 1.4x STN
Higher dividend yieldTrailing dividend yield 0.00% 0.00% 0.00% –
Better 1-year returnPrice return, last 12 months -54.4% -36.4% -25.4% IBP
Better 5-year returnAnnualised price return, 5 years -2.2%/yr +5.2%/yr +11.1%/yr IBP
Less volatileAnnualised volatility, 1 year 38.3% 30.3% 54.9% STN
Higher overall scoreMean of the five percentile scores vs peers 48/100 72/100 62/100 STN

Percentile Scorecard

ACMSTNIBP

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

AxisACMSTNIBP
Valuation 65 #19 of 52 92 #5 of 52 53 #25 of 52
Growth 11 #33 of 37 36 #24 of 37 19 #30 of 37
Profitability 44 #21 of 37 89 #5 of 37 94 #3 of 37
Financial Health 25 #43 of 57 79 #13 of 57 68 #19 of 57
Shareholder Returns 92 #3 of 27 65 #10 of 27 77 #7 of 27
Overall 48 72 62
  • ACM ranked among 57 companies in Construction Services
  • STN ranked among 57 companies in Construction Services
  • IBP ranked among 57 companies in Construction Services

Price Performance

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

Returns

PeriodACMSTNIBPSPY
1 month -1.6%+0.6%-1.7% -1.0%
3 months -14.3%+5.3%-12.4% +2.9%
6 months -24.7%-20.4%-34.1% +6.4%
Year to date -36.6%-24.6%-23.2% +11.4%
1 year -54.4%-36.4%-25.4% +13.1%
3 years -20.5%+15.3%+80.0% +79.4%
3 years, per year -7.4%+4.9%+21.7% +21.5%
5 years -10.7%+28.9%+69.0% +67.7%
5 years, per year -2.2%+5.2%+11.1% +10.9%
10 years +124.1%+214.6%+497.6% +255.2%
10 years, per year +8.4%+12.1%+19.6% +13.5%

Risk

MeasureACMSTNIBPSPY
Volatility, 1Y 38.3%30.3%54.9% 12.7%
Downside volatility, 1Y 46.9%34.7%60.7% 12.7%
Beta vs S&P 500, 1Y 0.850.761.38 1.00
Return / volatility, 1Y -1.42-1.20-0.46 1.03
Max drawdown, 5Y -56.8%-41.3%-49.2% -25.4%
From 52-week high -55.0%-37.4%-42.1% -2.5%
52-week high $134.35$113.70$344.19 $779.14
52-week low $58.00$66.69$180.32 $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.

MultipleACMSTNIBP
P/E now vs peer median 27.0xmedian 25.6x 12.4xmedian 25.6x 21.2xmedian 25.6x
P/S now vs peer median 0.5xmedian 0.8x 0.8xmedian 0.8x 1.8xmedian 0.8x
EV/EBITDA now vs peer median 13.4xmedian 12.7x 5.1xmedian 12.7x 12.4xmedian 12.7x
P/FCF now vs peer median 38.3xmedian 22.4x 15.3xmedian 22.4x 18.2xmedian 22.4x
P/B now vs peer median 3.2xmedian 2.3x 3.4xmedian 2.3x 8.3xmedian 2.3x
PEG now vs peer median 0.85median 0.57 0.60median 0.57 6.37median 0.57

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 monthsACMSTNIBP
Revenue $15.39B $10.51B $2.96B
Gross profit $874.05M $4.58B $996.90M
Operating income $631.20M $1.23B $367.80M
Net income $334.79M $536.90M $250.70M
Free cash flow $203.45M $528.58M $291.70M
EPS (diluted) $2.24 $5.72 $9.39
Cash & equivalents $1.01B $265.54M $394.50M
Total debt $2.75B $2.38B $1.06B
Shares (diluted) 128.60M 114.07M 26.71M
Enterprise value $2.92B $7.02B $3.86B

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
MetricACMSTNIBP
P/E 27.0x 12.4x 21.2x
P/FCF 38.3x 15.3x 18.2x
P/Operating cash flow 21.3x 17.4x 14.7x
P/S 0.5x 0.8x 1.8x
P/B 3.2x 3.4x 8.3x
P/Tangible book 3.5x 4.0x 14.3x
EV/EBITDA 13.4x 5.1x 12.4x
EV/EBIT 15.1x 6.6x 16.2x
EV/Revenue 0.6x 0.8x 2.0x
EV/FCF 46.8x 15.3x 20.4x
EV/Operating cash flow 26.0x 17.3x 16.6x
PEG (3Y EPS CAGR) 0.85 0.60 6.37

Growth

14 metrics
MetricACMSTNIBP
Revenue growth (1Y) -4.2% 9.4% 0.3%
Revenue CAGR (3Y) 3.3% 10.4% 2.4%
Gross profit growth (1Y) -25.9% 10.5% 0.5%
Gross profit CAGR (3Y) -1.4% 11.2% 4.2%
Operating income growth (1Y) -38.5% 20.5% -0.8%
Operating income CAGR (3Y) 13.8% 16.5% 0.2%
Net income growth (1Y) -50.9% 24.6% 0.3%
Net income CAGR (3Y) 24.6% 15.4% 1.4%
EPS growth (1Y) -51.4% 24.6% 2.9%
EPS CAGR (3Y) 31.9% 20.6% 3.3%
Operating cash flow growth (1Y) -60.5% -13.0% 0.4%
Operating cash flow CAGR (3Y) -20.5% 15.5% 4.4%
Free cash flow growth (1Y) -75.3% -10.2% 5.3%
Free cash flow CAGR (3Y) -29.3% 24.6% 3.0%

Profitability

14 metrics
MetricACMSTNIBP
Gross margin 5.7% 43.6% 33.6%
EBITDA margin 4.6% 14.9% 16.2%
Operating margin 4.1% 11.7% 12.4%
Pretax margin 3.4% 11.3% 11.3%
Net margin 1.9% 6.2% 8.5%
FCF margin 1.3% 5.0% 9.8%
Operating cash flow margin 2.4% 4.4% 12.1%
Return on equity 13.9% 36.3% 38.4%
Return on assets 2.8% 15.1% 11.2%
Return on invested capital 9.9% 37.8% 16.0%
Return on capital employed 10.5% 28.3% 19.8%
Asset turnover 1.3x 1.8x 1.3x
Cash conversion (OCF / net income) 1.1x 0.9x 1.4x
Stock comp / revenue 0.3% 0.3% 0.7%

Financial Health

11 metrics
MetricACMSTNIBP
Debt / assets 22.8% 3.9% 47.2%
Debt / equity 1.1x 0.1x 1.7x
Net debt / EBITDA 2.4x 0.0x 1.4x
Debt / FCF 13.5x 0.4x 3.6x
Liabilities / assets 80.0% 58.6% 71.6%
Equity / assets 20.0% 41.4% 28.4%
Interest coverage 3.1x 9.6x 10.2x
Current ratio 1.1x 1.5x 3.0x
Quick ratio 0.9x 1.0x 2.2x
Cash ratio 0.2x 0.2x 1.0x
Altman Z-score 1.79 – 4.91

Shareholder Returns

7 metrics
MetricACMSTNIBP
Dividend yield 2.1% 1.3% 1.5%
Net buyback yield 8.2% – 3.6%
Shareholder yield 10.3% 1.3% 5.1%
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.

ConsensusACMSTNIBP
Forward P/E 14.4xFY2026 15.6xFY2026 19.7xFY2026
EPS, next fiscal year $4.19FY2026 $4.55FY2026 $10.10FY2026
EPS growth, next FY -20.3%FY2026 +17.9%FY2026 -11.7%FY2026
EPS growth, the year after +55.4% +3.3% +3.2%
Revenue, next fiscal year $7.04BFY2026 $4.69BFY2026 $3.10BFY2026
Revenue growth, next FY -7.0%FY2026 -0.8%FY2026 +4.3%FY2026
Revenue growth, the year after +8.8% +7.5% -7.2%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersACMSTNIBP
Held by institutions 92.6% 62.0% 97.9%
Institutions holding 572 293 423
Change in shares held, QoQ +5.5% +2.8% +0.2%
Institutions buying 270 162 229
Institutions selling 232 87 146
Buyers to sellers 1.16 1.86 1.57

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.

ACMSTNIBP
ACM 1.00 0.52 0.28
STN 0.52 1.00 0.24
IBP 0.28 0.24 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, ACM, STN and IBP?

Stantec (STN) is the largest by market capitalisation: Aecom (ACM) $7.80B, Stantec (STN) $8.10B, Installed Building Products (IBP) $5.38B.

Which stock is cheaper, ACM, STN and IBP?

Stantec (STN) trades on the lowest price-to-earnings ratio (Aecom (ACM) 27.1x, Stantec (STN) 12.4x, Installed Building Products (IBP) 21.5x). On next year's consensus earnings, Aecom (ACM) is cheapest (Aecom (ACM) 14.4x, Stantec (STN) 15.6x, Installed Building Products (IBP) 19.7x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

Stantec (STN) grew revenue fastest over the trailing twelve months: Aecom (ACM) -4.2%, Stantec (STN) +9.4%, Installed Building Products (IBP) +0.3%.

Which company is more profitable?

Installed Building Products (IBP) has the highest net margin (Aecom (ACM) 1.9%, Stantec (STN) 6.2%, Installed Building Products (IBP) 8.5%). On return on invested capital, Stantec (STN) leads (Aecom (ACM) 9.9%, Stantec (STN) 37.8%, Installed Building Products (IBP) 16.0%).

Which stock has performed better?

Over the past year Installed Building Products (IBP) returned the most: Aecom (ACM) -54.4%, Stantec (STN) -36.4%, Installed Building Products (IBP) -25.4%. Over five years, Installed Building Products (IBP) compounded fastest (Aecom (ACM) -2.2%/yr, Stantec (STN) +5.2%/yr, Installed Building Products (IBP) +11.1%/yr). Returns are price only, before dividends.

Which stock is riskier?

By one-year price volatility, Stantec (STN) has been the steadiest (Aecom (ACM) 38.3%, Stantec (STN) 30.3%, Installed Building Products (IBP) 54.9%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, ACM, STN and IBP?

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, Stantec (STN) leads on 7. 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.