EME vs PRIM vs ACM Stock Comparison

Emcor, Primoris Services and Aecom Prices as of Oct 26, 2026 Peers: Industry group
EME EMCOR Group, Inc.
$665.73 -12.7% 1M -11.0% 1Y
Market cap
$29.67B
P/E
20.6x
Revenue (TTM)
$18.60B
Div. yield
0.00%
Engineering and Construction Industrials
7 wins
PRIM Primoris Services Corp
$66.45 -8.5% 1M -53.3% 1Y
Market cap
$3.72B
P/E
26.7x
Revenue (TTM)
$7.28B
Div. yield
0.00%
Utility Construction Industrials
2 wins
ACM Aecom
$60.73 -0.3% 1M -54.3% 1Y
Market cap
$7.91B
P/E
27.5x
Revenue (TTM)
$15.39B
Div. yield
–
Engineering and Construction Industrials
3 wins

Head to Head

12 decided of 12

Emcor leads on 7 of the 12 questions below (Emcor 7, Aecom 3, Primoris Services 2). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionEMEPRIMACMLeader
Larger companyMarket capitalisation $29.67B $3.72B $7.91B EME
Cheaper on earningsLower P/E, profitable companies only 20.6x 26.7x 27.5x EME
Cheaper on forward earningsLower price / next fiscal year consensus EPS 19.2x 29.4x 14.5x ACM
Faster revenue growthRevenue growth, trailing twelve months +18.9% +5.1% -4.2% EME
More profitableNet margin, trailing twelve months 7.7% 1.9% 1.9% EME
Better return on capitalReturn on invested capital — 7.0% 9.9% ACM
Less leveragedLower net debt / EBITDA — 1.8x 2.4x PRIM
Higher dividend yieldTrailing dividend yield 0.00% 0.00% 0.00% PRIM
Better 1-year returnPrice return, last 12 months -11.0% -53.3% -54.3% EME
Better 5-year returnAnnualised price return, 5 years +41.7%/yr +20.4%/yr -1.9%/yr EME
Less volatileAnnualised volatility, 1 year 45.5% 94.5% 38.4% ACM
Higher overall scoreMean of the five percentile scores vs peers 64/100 38/100 47/100 EME

Percentile Scorecard

EMEPRIMACM

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

AxisEMEPRIMACM
Valuation 57 #23 of 52 61 #21 of 52 63 #20 of 52
Growth 56 #17 of 37 17 #31 of 37 11 #33 of 37
Profitability 86 #6 of 37 42 #22 of 37 44 #21 of 37
Financial Health 70 #18 of 57 45 #32 of 57 25 #43 of 57
Shareholder Returns 54 #13 of 27 27 #20 of 27 92 #3 of 27
Overall 64 38 47
  • EME ranked among 57 companies in Construction Services
  • PRIM ranked among 57 companies in Construction Services
  • ACM ranked among 57 companies in Construction Services

Price Performance

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

Returns

PeriodEMEPRIMACMSPY
1 month -12.7%-8.5%-0.3% -0.8%
3 months -10.4%-22.3%-14.4% +3.5%
6 months -24.8%-61.6%-25.9% +7.0%
Year to date +8.8%-46.5%-36.3% +12.2%
1 year -11.0%-53.3%-54.3% +13.0%
3 years +224.2%+127.9%-18.8% +86.3%
3 years, per year +48.0%+31.6%-6.7% +23.1%
5 years +471.3%+153.3%-9.3% +68.6%
5 years, per year +41.7%+20.4%-1.9% +11.0%
10 years +1,083.3%+239.0%+120.8% +258.0%
10 years, per year +28.0%+13.0%+8.2% +13.6%

Risk

MeasureEMEPRIMACMSPY
Volatility, 1Y 45.5%94.5%38.4% 12.7%
Downside volatility, 1Y 48.2%120.4%47.1% 12.7%
Beta vs S&P 500, 1Y 1.931.860.86 1.00
Return / volatility, 1Y -0.24-0.56-1.42 1.02
Max drawdown, 5Y -36.2%-68.0%-56.8% -25.4%
From 52-week high -29.5%-67.3%-54.8% -1.8%
52-week high $943.75$202.92$134.35 $779.14
52-week low $581.58$64.99$58.00 $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.

MultipleEMEPRIMACM
P/E now vs peer median 20.5xmedian 25.7x 25.7xmedian 25.7x 27.1xmedian 25.7x
P/S now vs peer median 1.6xmedian 0.8x 0.5xmedian 0.8x 0.5xmedian 0.8x
EV/EBITDA now vs peer median 13.4xmedian 12.9x 13.2xmedian 12.9x 13.4xmedian 12.9x
P/FCF now vs peer median 25.1xmedian 22.5x 40.6xmedian 22.5x 38.4xmedian 22.5x
P/B now vs peer median 7.2xmedian 2.3x 2.2xmedian 2.3x 3.3xmedian 2.3x
PEG now vs peer median 0.44median 0.56 6.44median 0.56 0.85median 0.56

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 monthsEMEPRIMACM
Revenue $18.60B $7.28B $15.39B
Gross profit $3.61B $627.80M $874.05M
Operating income $1.93B $212.09M $631.20M
Net income $1.44B $139.54M $334.79M
Free cash flow $1.17B $88.00M $203.45M
EPS (diluted) $32.30 $2.59 $2.24
Cash & equivalents $924.41M $218.20M $1.01B
Total debt – $797.00M $2.75B
Shares (diluted) 44.55M 54.00M 128.60M
Enterprise value $26.06B $2.18B $3.03B

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
MetricEMEPRIMACM
P/E 20.5x 25.7x 27.1x
P/FCF 25.1x 40.6x 38.4x
P/Operating cash flow 22.8x 18.4x 21.4x
P/S 1.6x 0.5x 0.5x
P/B 7.2x 2.2x 3.3x
P/Tangible book 9.8x 2.9x 3.5x
EV/EBITDA 13.4x 13.2x 13.4x
EV/EBIT 14.8x 19.6x 15.1x
EV/Revenue 1.5x 0.6x 0.6x
EV/FCF 24.4x 47.2x 46.9x
EV/Operating cash flow 22.1x 21.4x 26.1x
PEG (3Y EPS CAGR) 0.44 6.44 0.85

Growth

14 metrics
MetricEMEPRIMACM
Revenue growth (1Y) 18.9% 5.1% -4.2%
Revenue CAGR (3Y) 16.7% 11.3% 3.3%
Gross profit growth (1Y) 18.5% -20.1% -25.9%
Gross profit CAGR (3Y) 26.3% 3.6% -1.4%
Operating income growth (1Y) 29.9% -44.8% -38.5%
Operating income CAGR (3Y) 41.7% -0.8% 13.8%
Net income growth (1Y) 30.2% -42.1% -50.9%
Net income CAGR (3Y) 43.8% 3.8% 24.6%
EPS growth (1Y) 31.5% -41.2% -51.4%
EPS CAGR (3Y) 47.0% 4.0% 31.9%
Operating cash flow growth (1Y) -0.6% -70.8% -60.5%
Operating cash flow CAGR (3Y) 20.8% 27.6% -20.5%
Free cash flow growth (1Y) -3.1% -82.4% -75.3%
Free cash flow CAGR (3Y) 20.3% 57.9% -29.3%

Profitability

14 metrics
MetricEMEPRIMACM
Gross margin 19.4% 8.6% 5.7%
EBITDA margin 11.5% 4.3% 4.6%
Operating margin 10.4% 2.9% 4.1%
Pretax margin 10.5% 2.6% 3.4%
Net margin 7.7% 1.9% 1.9%
FCF margin 6.3% 1.2% 1.3%
Operating cash flow margin 6.9% 2.7% 2.4%
Return on equity 36.2% 8.5% 13.9%
Return on assets 14.6% 3.2% 2.8%
Return on invested capital – 7.0% 9.9%
Return on capital employed 41.9% 8.2% 10.5%
Asset turnover 1.9x 1.6x 1.3x
Cash conversion (OCF / net income) 0.9x 1.4x 1.1x
Stock comp / revenue 0.1% 0.3% 0.3%

Financial Health

11 metrics
MetricEMEPRIMACM
Debt / assets – 17.2% 22.8%
Debt / equity – 0.5x 1.1x
Net debt / EBITDA – 1.8x 2.4x
Debt / FCF – 9.1x 13.5x
Liabilities / assets 59.8% 65.4% 80.0%
Equity / assets 40.2% 34.6% 20.0%
Interest coverage – – 3.1x
Current ratio 1.3x 1.2x 1.1x
Quick ratio 1.2x 1.1x 0.9x
Cash ratio 0.2x 0.1x 0.2x
Altman Z-score 6.46 2.93 1.79

Shareholder Returns

7 metrics
MetricEMEPRIMACM
Dividend yield 0.2% 0.5% 2.0%
Net buyback yield 1.4% – 8.2%
Shareholder yield 1.7% 0.5% 10.3%
Payout ratio (earnings) 4.0% 12.5% –
Payout ratio (FCF) 4.9% 19.8% –
Dividend growth (1Y) 26.6% 15.4% –
Dividend CAGR (3Y) 25.6% 10.9% –

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.

ConsensusEMEPRIMACM
Forward P/E 19.2xFY2026 29.4xFY2026 14.5xFY2026
EPS, next fiscal year $34.73FY2026 $2.26FY2026 $4.19FY2026
EPS growth, next FY +34.2%FY2026 -59.8%FY2026 -20.3%FY2026
EPS growth, the year after +10.7% +117.7% +54.7%
Revenue, next fiscal year $19.07BFY2026 $6.78BFY2026 $7.04BFY2026
Revenue growth, next FY +12.2%FY2026 -10.4%FY2026 -7.0%FY2026
Revenue growth, the year after +13.1% +13.0% +8.8%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersEMEPRIMACM
Held by institutions 93.1% 100.0% 92.6%
Institutions holding 1,235 445 572
Change in shares held, QoQ -0.1% +1.5% +5.5%
Institutions buying 659 243 270
Institutions selling 419 159 232
Buyers to sellers 1.57 1.53 1.16

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.

EMEPRIMACM
EME 1.00 0.39 0.09
PRIM 0.39 1.00 0.04
ACM 0.09 0.04 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, EME, PRIM and ACM?

Emcor (EME) is the largest by market capitalisation: Emcor (EME) $29.67B, Primoris Services (PRIM) $3.72B, Aecom (ACM) $7.91B.

Which stock is cheaper, EME, PRIM and ACM?

Emcor (EME) trades on the lowest price-to-earnings ratio (Emcor (EME) 20.6x, Primoris Services (PRIM) 26.7x, Aecom (ACM) 27.5x). On next year's consensus earnings, Aecom (ACM) is cheapest (Emcor (EME) 19.2x, Primoris Services (PRIM) 29.4x, Aecom (ACM) 14.5x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

Emcor (EME) grew revenue fastest over the trailing twelve months: Emcor (EME) +18.9%, Primoris Services (PRIM) +5.1%, Aecom (ACM) -4.2%.

Which company is more profitable?

Emcor (EME) has the highest net margin (Emcor (EME) 7.7%, Primoris Services (PRIM) 1.9%, Aecom (ACM) 1.9%). On return on invested capital, Aecom (ACM) leads (Primoris Services (PRIM) 7.0%, Aecom (ACM) 9.9%).

Which stock has performed better?

Over the past year Emcor (EME) returned the most: Emcor (EME) -11.0%, Primoris Services (PRIM) -53.3%, Aecom (ACM) -54.3%. Over five years, Emcor (EME) compounded fastest (Emcor (EME) +41.7%/yr, Primoris Services (PRIM) +20.4%/yr, Aecom (ACM) -1.9%/yr). Returns are price only, before dividends.

Which pays a higher dividend?

Primoris Services (PRIM) has the highest dividend yield: Emcor (EME) 0.00%, Primoris Services (PRIM) 0.00%, Aecom (ACM) 0.00%. Aecom (ACM) pays no regular dividend.

Which stock is riskier?

By one-year price volatility, Aecom (ACM) has been the steadiest (Emcor (EME) 45.5%, Primoris Services (PRIM) 94.5%, Aecom (ACM) 38.4%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, EME, PRIM and ACM?

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