IRM vs ARMK vs UNF Stock Comparison

Iron Mountain, Aramark and Unifirst Prices as of Oct 27, 2026 Peers: Industry group
IRM Iron Mountain Inc
$115.26 +3.5% 1M +8.3% 1Y
Market cap
$34.37B
P/E
82.1x
Revenue (TTM)
$7.56B
Div. yield
0.03%
Facility Services Industrials
7 wins
ARMK Aramark
$55.52 +1.0% 1M +38.4% 1Y
Market cap
$14.58B
P/E
38.1x
Revenue (TTM)
$19.85B
Div. yield
0.01%
Facility Services Industrials
4 wins
UNF Unifirst Corp
$250.72 -3.3% 1M +58.9% 1Y
Market cap
$4.56B
P/E
44.0x
Revenue (TTM)
—
Div. yield
–
Facility Services Industrials
1 win

Head to Head

12 decided of 12

Iron Mountain leads on 7 of the 12 questions below (Iron Mountain 7, Aramark 4, Unifirst 1). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionIRMARMKUNFLeader
Larger companyMarket capitalisation $34.37B $14.58B $4.56B IRM
Cheaper on earningsLower P/E, profitable companies only 82.1x 38.1x 44.0x ARMK
Cheaper on forward earningsLower price / next fiscal year consensus EPS 49.7x 25.8x 31.8x ARMK
Faster revenue growthRevenue growth, trailing twelve months +17.4% +11.0% — IRM
More profitableNet margin, trailing twelve months 5.5% 1.9% — IRM
Better return on capitalReturn on invested capital 7.6% 6.8% — IRM
Less leveragedLower net debt / EBITDA 6.7x 4.1x — ARMK
Higher dividend yieldTrailing dividend yield 0.03% 0.01% 0.00% IRM
Better 1-year returnPrice return, last 12 months +8.3% +38.4% +58.9% UNF
Better 5-year returnAnnualised price return, 5 years +20.0%/yr +8.9%/yr +4.7%/yr IRM
Less volatileAnnualised volatility, 1 year 33.3% 26.6% 34.6% ARMK
Higher overall scoreMean of the five percentile scores vs peers 47/100 45/100 41/100 IRM

Percentile Scorecard

IRMARMKUNF

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

AxisIRMARMKUNF
Valuation 21 #89 of 112 45 #62 of 112 42 #65 of 112
Growth 90 #11 of 96 84 #16 of 96 20 #77 of 96
Profitability 64 #33 of 91 47 #49 of 91 –
Financial Health 8 #115 of 125 20 #100 of 125 91 #12 of 125
Shareholder Returns 50 #34 of 67 29 #48 of 67 11 #60 of 67
Overall 47 45 41
  • IRM ranked among 130 companies in Business Services
  • ARMK ranked among 130 companies in Business Services
  • UNF ranked among 130 companies in Business Services

Price Performance

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

Returns

PeriodIRMARMKUNFSPY
1 month +3.5%+1.0%-3.3% -0.2%
3 months -8.3%-3.3%-16.6% +3.9%
6 months +2.3%+22.2%-2.7% +8.2%
Year to date +39.0%+50.6%+30.0% +12.9%
1 year +8.3%+38.4%+58.9% +12.3%
3 years +98.0%+108.2%+56.4% +87.4%
3 years, per year +25.6%+27.7%+16.1% +23.3%
5 years +148.3%+53.1%+25.6% +67.9%
5 years, per year +20.0%+8.9%+4.7% +10.9%
10 years +251.8%+49.4%+109.6% +261.1%
10 years, per year +13.4%+4.1%+7.7% +13.7%

Risk

MeasureIRMARMKUNFSPY
Volatility, 1Y 33.3%26.6%34.6% 12.7%
Downside volatility, 1Y 34.4%23.4%25.8% 12.7%
Beta vs S&P 500, 1Y 1.170.630.21 1.00
Return / volatility, 1Y 0.251.441.70 0.97
Max drawdown, 5Y -40.0%-46.4%-34.9% -25.4%
From 52-week high -13.4%-11.0%-16.8% -1.2%
52-week high $133.06$62.39$301.48 $779.14
52-week low $78.86$36.04$150.02 $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.

MultipleIRMARMKUNF
P/E now vs peer median 82.0xmedian 21.2x 38.2xmedian 21.2x 44.0xmedian 21.2x
P/S now vs peer median 4.5xmedian 0.9x 0.7xmedian 0.9x 2.0xmedian 0.9x
EV/EBITDA now vs peer median 20.3xmedian 11.9x 14.6xmedian 11.9x —median 11.9x
P/FCF now vs peer median -69.9xmedian 13.7x 33.8xmedian 13.7x 57.8xmedian 13.7x
P/B now vs peer median -26.8xmedian 2.4x 4.3xmedian 2.4x 2.0xmedian 2.4x
PEG now vs peer median 31.37median 1.00 -3.26median 1.00 —median 1.00

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 monthsIRMARMKUNF
Revenue $7.56B $19.85B –
Gross profit $4.10B $1.69B –
Operating income $1.42B $870.70M –
Net income $434.46M $382.71M $109.49M
Free cash flow -$490.92M $432.81M –
EPS (diluted) $1.40 $1.43 –
Cash & equivalents $204.79M $499.43M $192.12M
Total debt $17.35B $6.13B –
Shares (diluted) 299.85M 268.54M 18.22M
Enterprise value $33.56B $12.53B $4.56B

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
MetricIRMARMKUNF
P/E 82.0x 38.2x 44.0x
P/FCF -69.9x 33.8x 57.8x
P/Operating cash flow 20.7x 16.1x 22.1x
P/S 4.5x 0.7x 2.0x
P/B -26.8x 4.3x 2.0x
P/Tangible book -13.6x 9.9x 2.0x
EV/EBITDA 20.3x 14.6x –
EV/EBIT 36.3x 23.3x –
EV/Revenue 6.8x 1.0x –
EV/FCF -104.8x 46.8x –
EV/Operating cash flow 31.1x 22.2x 22.1x
PEG (3Y EPS CAGR) 31.37 -3.26 –

Growth

14 metrics
MetricIRMARMKUNF
Revenue growth (1Y) 17.4% 11.0% –
Revenue CAGR (3Y) 13.0% 13.3% –
Gross profit growth (1Y) 13.5% 10.6% –
Gross profit CAGR (3Y) 11.1% 25.2% –
Operating income growth (1Y) 35.4% 9.8% –
Operating income CAGR (3Y) 12.8% 30.2% –
Net income growth (1Y) 867.3% 5.8% -26.2%
Net income CAGR (3Y) 4.1% -11.1% 1.8%
EPS growth (1Y) 897.5% 4.6% –
EPS CAGR (3Y) 2.6% -11.7% –
Operating cash flow growth (1Y) 31.7% 18.7% -30.9%
Operating cash flow CAGR (3Y) 17.2% 68.3% -1.6%
Free cash flow growth (1Y) 50.3% 54.2% –
Free cash flow CAGR (3Y) -60.8% 77.8% –

Profitability

14 metrics
MetricIRMARMKUNF
Gross margin 54.2% 8.5% –
EBITDA margin 33.6% 7.0% –
Operating margin 18.8% 4.4% –
Pretax margin 6.7% 2.6% –
Net margin 5.5% 1.9% –
FCF margin -6.5% 2.2% –
Operating cash flow margin 21.9% 4.6% –
Return on equity – 11.5% –
Return on assets 2.0% 2.8% –
Return on invested capital 7.6% 6.8% –
Return on capital employed 7.5% 8.0% –
Asset turnover 0.3x 1.4x –
Cash conversion (OCF / net income) 3.8x 2.4x 1.9x
Stock comp / revenue 1.8% 0.3% –

Financial Health

11 metrics
MetricIRMARMKUNF
Debt / assets 79.0% 43.9% –
Debt / equity -13.5x 1.8x –
Net debt / EBITDA 6.7x 4.1x –
Debt / FCF -35.3x 14.2x –
Liabilities / assets 105.8% 75.7% 22.3%
Equity / assets -5.8% 24.3% 77.7%
Interest coverage – – –
Current ratio 0.7x 1.3x 3.1x
Quick ratio 0.6x 1.0x –
Cash ratio 0.1x 0.2x –
Altman Z-score 1.76 2.59 –

Shareholder Returns

7 metrics
MetricIRMARMKUNF
Dividend yield 3.0% 0.9% 0.6%
Net buyback yield – 0.3% –
Shareholder yield 3.0% 1.2% 0.6%
Payout ratio (earnings) 229.5% 32.0% –
Payout ratio (FCF) -203.1% 28.3% –
Dividend growth (1Y) 16.5% 12.9% –
Dividend CAGR (3Y) 11.1% 2.3% –

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.

ConsensusIRMARMKUNF
Forward P/E 49.7xFY2026 25.8xFY2026 31.8xFY2027
EPS, next fiscal year $2.32FY2026 $2.15FY2026 $7.88FY2027
EPS growth, next FY +9.4%FY2026 +16.8%FY2026 -2.7%FY2027
EPS growth, the year after +28.0% +21.9% +12.3%
Revenue, next fiscal year $8.36BFY2026 $21.42BFY2026 $2.79BFY2027
Revenue growth, next FY +21.1%FY2026 +15.7%FY2026 +10.8%FY2027
Revenue growth, the year after +2.2% -4.7% -9.0%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersIRMARMKUNF
Held by institutions 86.2% 98.9% 81.3%
Institutions holding 1,161 544 340
Change in shares held, QoQ +1.9% +0.0% -2.5%
Institutions buying 598 320 162
Institutions selling 377 157 121
Buyers to sellers 1.59 2.04 1.34

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.

IRMARMKUNF
IRM 1.00 0.19 0.02
ARMK 0.19 1.00 0.24
UNF 0.02 0.24 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, IRM, ARMK and UNF?

Iron Mountain (IRM) is the largest by market capitalisation: Iron Mountain (IRM) $34.37B, Aramark (ARMK) $14.58B, Unifirst (UNF) $4.56B.

Which stock is cheaper, IRM, ARMK and UNF?

Aramark (ARMK) trades on the lowest price-to-earnings ratio (Iron Mountain (IRM) 82.1x, Aramark (ARMK) 38.1x, Unifirst (UNF) 44.0x). On next year's consensus earnings, Aramark (ARMK) is cheapest (Iron Mountain (IRM) 49.7x, Aramark (ARMK) 25.8x, Unifirst (UNF) 31.8x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

Iron Mountain (IRM) grew revenue fastest over the trailing twelve months: Iron Mountain (IRM) +17.4%, Aramark (ARMK) +11.0%.

Which company is more profitable?

Iron Mountain (IRM) has the highest net margin (Iron Mountain (IRM) 5.5%, Aramark (ARMK) 1.9%). On return on invested capital, Iron Mountain (IRM) leads (Iron Mountain (IRM) 7.6%, Aramark (ARMK) 6.8%).

Which stock has performed better?

Over the past year Unifirst (UNF) returned the most: Iron Mountain (IRM) +8.3%, Aramark (ARMK) +38.4%, Unifirst (UNF) +58.9%. Over five years, Iron Mountain (IRM) compounded fastest (Iron Mountain (IRM) +20.0%/yr, Aramark (ARMK) +8.9%/yr, Unifirst (UNF) +4.7%/yr). Returns are price only, before dividends.

Which pays a higher dividend?

Iron Mountain (IRM) has the highest dividend yield: Iron Mountain (IRM) 0.03%, Aramark (ARMK) 0.01%, Unifirst (UNF) 0.00%. Unifirst (UNF) pays no regular dividend.

Which stock is riskier?

By one-year price volatility, Aramark (ARMK) has been the steadiest (Iron Mountain (IRM) 33.3%, Aramark (ARMK) 26.6%, Unifirst (UNF) 34.6%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, IRM, ARMK and UNF?

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