ECL vs NSSC vs BLGO Stock Comparison

Ecolab, Napco Security Technologies and Biolargo Prices as of Oct 29, 2026 Peers: Industry group
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ECL Ecolab Inc.
$300.86 +8.3% 1M +16.9% 1Y
Market cap
$84.51B
P/E
40.6x
Revenue (TTM)
$17.37B
Div. yield
0.01%
Water Treatment Industrials
3 wins
BLGO Biolargo, Inc.
$0.06 -25.0% 1M -64.7% 1Y
Market cap
$19.90M
P/E
–
Revenue (TTM)
$4.08M
Div. yield
–
Water Treatment Industrials
1 win

Head to Head

10 decided of 12

Napco Security Technologies leads on 6 of the 12 questions below (Napco Security Technologies 6, Ecolab 3, Biolargo 1). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionECLNSSCBLGOLeader
Larger companyMarket capitalisation $84.51B $1.41B $19.90M ECL
Cheaper on earningsLower P/E, profitable companies only 40.6x 32.7x -1.4x NSSC
Cheaper on forward earningsLower price / next fiscal year consensus EPS 38.1x 24.8x — NSSC
Faster revenue growthRevenue growth, trailing twelve months +9.3% +11.4% -70.9% NSSC
More profitableNet margin, trailing twelve months 12.0% 21.3% -354.8% NSSC
Better return on capitalReturn on invested capital 10.0% — — –
Less leveragedLower net debt / EBITDA 3.1x — -0.2x BLGO
Higher dividend yieldTrailing dividend yield 0.01% 0.00% 0.00% –
Better 1-year returnPrice return, last 12 months +16.9% -8.6% -64.7% ECL
Better 5-year returnAnnualised price return, 5 years +6.3%/yr +10.8%/yr -19.7%/yr NSSC
Less volatileAnnualised volatility, 1 year 21.2% 40.9% 92.9% ECL
Higher overall scoreMean of the five percentile scores vs peers 64/100 64/100 12/100 NSSC

Percentile Scorecard

ECLNSSCBLGO

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

AxisECLNSSCBLGO
Valuation 50 #11 of 21 30 #80 of 113 10 #19 of 21
Growth 83 #4 of 19 80 #20 of 96 0 #19 of 19
Profitability 93 #2 of 16 100 #1 of 91 7 #15 of 16
Financial Health 25 #16 of 21 96 #6 of 122 10 #19 of 21
Shareholder Returns 67 #4 of 10 15 #56 of 66 33 #7 of 10
Overall 64 64 12
  • ECL ranked among 22 companies in Environmental Equipment
  • NSSC ranked among 130 companies in Business Services
  • BLGO ranked among 22 companies in Environmental Equipment

Price Performance

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

Returns

PeriodECLNSSCBLGOSPY
1 month +8.3%+12.4%-25.0% +0.7%
3 months +7.7%+9.9%-45.5% +3.7%
6 months +15.4%-14.5%-60.0% +7.1%
Year to date +14.6%-4.1%-66.7% +12.8%
1 year +16.9%-8.6%-64.7% +11.9%
3 years +89.0%+117.3%-64.7% +85.2%
3 years, per year +23.7%+29.5%-29.3% +22.8%
5 years +35.4%+66.7%-66.7% +67.6%
5 years, per year +6.3%+10.8%-19.7% +10.9%
10 years +161.4%+1,042.3%-91.8% +262.0%
10 years, per year +10.1%+27.6%-22.1% +13.7%

Risk

MeasureECLNSSCBLGOSPY
Volatility, 1Y 21.2%40.9%92.9% 12.7%
Downside volatility, 1Y 20.4%43.6%138.6% 12.6%
Beta vs S&P 500, 1Y 0.481.210.20 1.00
Return / volatility, 1Y 0.79-0.21-0.70 0.94
Max drawdown, 5Y -44.3%-65.8%-85.0% -25.4%
From 52-week high -2.4%-15.4%-70.0% -1.2%
52-week high $308.35$47.23$0.20 $779.14
52-week low $245.73$34.96$0.06 $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.

MultipleECLNSSCBLGO
P/E now vs peer median 40.5xmedian 25.4x 33.2xmedian 21.9x -1.3xmedian 25.4x
P/S now vs peer median 4.9xmedian 2.5x 7.1xmedian 0.9x 4.8xmedian 2.5x
EV/EBITDA now vs peer median 24.3xmedian 17.9x 27.0xmedian 11.9x -1.3xmedian 17.9x
P/FCF now vs peer median 47.0xmedian 22.3x 24.1xmedian 14.4x -1.9xmedian 22.3x
P/B now vs peer median 8.1xmedian 1.8x 7.5xmedian 2.4x -7.2xmedian 1.8x
PEG now vs peer median 2.04median 1.73 1.86median 0.97 —median 1.73

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 monthsECLNSSCBLGO
Revenue $17.37B $202.32M $4.08M
Gross profit $7.63B $119.79M $1.63M
Operating income $2.90B $45.64M -$18.12M
Net income $2.10B $43.03M -$18.79M
Free cash flow $1.80B $59.23M -$10.56M
R&D – $13.79M $3.27M
EPS (diluted) $7.38 $1.20 –
Cash & equivalents $722.30M $126.93M $2.19M
Total debt $13.19B – $4.85M
Shares (diluted) 282.10M 35.89M –
Enterprise value $77.49B $921.46M $5.16M

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
MetricECLNSSCBLGO
P/E 40.5x 33.2x -1.3x
P/FCF 47.0x 24.1x -1.9x
P/Operating cash flow 27.9x 23.4x -1.9x
P/S 4.9x 7.1x 4.8x
P/B 8.1x 7.5x -7.2x
P/Tangible book 15.8x 7.6x -7.2x
EV/EBITDA 24.3x 27.0x -1.3x
EV/EBIT 33.4x 28.3x -1.2x
EV/Revenue 5.6x 6.4x 5.5x
EV/FCF 54.0x 21.8x -2.1x
EV/Operating cash flow 32.0x 21.1x -2.2x
PEG (3Y EPS CAGR) 2.04 1.86 –

Growth

14 metrics
MetricECLNSSCBLGO
Revenue growth (1Y) 9.3% 11.4% -70.9%
Revenue CAGR (3Y) 4.9% 6.0% -22.5%
Gross profit growth (1Y) 8.4% 18.6% -74.4%
Gross profit CAGR (3Y) 8.8% 17.8% -27.8%
Operating income growth (1Y) 11.3% -1.3% -185.8%
Operating income CAGR (3Y) 17.2% 14.6% -60.3%
Net income growth (1Y) 4.7% -0.9% -184.9%
Net income CAGR (3Y) 18.8% 16.6% -62.6%
EPS growth (1Y) 6.2% 0.8% –
EPS CAGR (3Y) 19.8% 17.8% –
Operating cash flow growth (1Y) 15.2% 14.2% -37.9%
Operating cash flow CAGR (3Y) 7.8% 35.3% -62.1%
Free cash flow growth (1Y) 15.6% 15.2% -40.8%
Free cash flow CAGR (3Y) 1.8% 39.7% -57.1%

Profitability

14 metrics
MetricECLNSSCBLGO
Gross margin 43.9% 59.2% 40.0%
EBITDA margin 22.9% 23.6% -434.2%
Operating margin 16.7% 22.6% -443.9%
Pretax margin 15.0% 24.6% -458.1%
Net margin 12.0% 21.3% -354.8%
FCF margin 10.3% 29.3% -258.6%
Operating cash flow margin 17.4% 30.2% -252.8%
Return on equity 20.4% 23.3% –
Return on assets 6.9% 18.7% -246.7%
Return on invested capital 10.0% – –
Return on capital employed 12.0% 24.3% -635.4%
Asset turnover 0.6x 0.9x 0.5x
Cash conversion (OCF / net income) 1.4x 1.4x 0.5x
Stock comp / revenue 0.8% 0.5% 59.3%

Financial Health

11 metrics
MetricECLNSSCBLGO
Debt / assets 42.4% – 72.8%
Debt / equity 1.3x – -1.8x
Net debt / EBITDA 3.1x – -0.2x
Debt / FCF 7.3x – -0.5x
Liabilities / assets 66.4% 20.0% 140.9%
Equity / assets 33.6% 80.0% -40.9%
Interest coverage 8.0x – -22.5x
Current ratio 1.1x 4.9x 0.7x
Quick ratio 0.7x 4.1x 0.6x
Cash ratio 0.1x 3.2x 0.5x
Altman Z-score 3.96 21.61 -42.24

Shareholder Returns

7 metrics
MetricECLNSSCBLGO
Dividend yield 1.0% 1.5% –
Net buyback yield 1.1% 0.0% -2.9%
Shareholder yield 2.1% 1.5% -2.9%
Payout ratio (earnings) 39.0% – –
Payout ratio (FCF) 45.6% – –
Dividend growth (1Y) 12.7% – –
Dividend CAGR (3Y) 9.7% – –

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.

ConsensusECLNSSCBLGO
Forward P/E 38.1xFY2026 24.8xFY2027 –
EPS, next fiscal year $7.90FY2026 $1.61FY2027 $-0.05FY2026
EPS growth, next FY +4.9%FY2026 +0.6%FY2027 –
EPS growth, the year after +23.2% +19.3% –
Revenue, next fiscal year $17.26BFY2026 $208.17MFY2027 $5.48MFY2026
Revenue growth, next FY +7.3%FY2026 +2.9%FY2027 -29.4%FY2026
Revenue growth, the year after +5.4% +9.1% +180.2%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersECLNSSCBLGO
Held by institutions 80.0% 100.0% –
Institutions holding 1,712 260 –
Change in shares held, QoQ +1.4% +4.2% –
Institutions buying 764 137 –
Institutions selling 679 89 –
Buyers to sellers 1.13 1.54 –

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.

ECLNSSCBLGO
ECL 1.00 0.25 0.03
NSSC 0.25 1.00 0.01
BLGO 0.03 0.01 1.00

Add a Peer

Largest companies in the same industry

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Frequently Asked Questions

Which is bigger, ECL, NSSC and BLGO?

Ecolab (ECL) is the largest by market capitalisation: Ecolab (ECL) $84.51B, Napco Security Technologies (NSSC) $1.41B, Biolargo (BLGO) $19.90M.

Which stock is cheaper, ECL, NSSC and BLGO?

Napco Security Technologies (NSSC) trades on the lowest price-to-earnings ratio (Ecolab (ECL) 40.6x, Napco Security Technologies (NSSC) 32.7x, Biolargo (BLGO) -1.4x). On next year's consensus earnings, Napco Security Technologies (NSSC) is cheapest (Ecolab (ECL) 38.1x, Napco Security Technologies (NSSC) 24.8x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

Napco Security Technologies (NSSC) grew revenue fastest over the trailing twelve months: Ecolab (ECL) +9.3%, Napco Security Technologies (NSSC) +11.4%, Biolargo (BLGO) -70.9%.

Which company is more profitable?

Napco Security Technologies (NSSC) has the highest net margin (Ecolab (ECL) 12.0%, Napco Security Technologies (NSSC) 21.3%, Biolargo (BLGO) -354.8%).

Which stock has performed better?

Over the past year Ecolab (ECL) returned the most: Ecolab (ECL) +16.9%, Napco Security Technologies (NSSC) -8.6%, Biolargo (BLGO) -64.7%. Over five years, Napco Security Technologies (NSSC) compounded fastest (Ecolab (ECL) +6.3%/yr, Napco Security Technologies (NSSC) +10.8%/yr, Biolargo (BLGO) -19.7%/yr). Returns are price only, before dividends.

Which pays a higher dividend?

Only one of these companies pays a dividend: Ecolab (ECL) 0.01%, Napco Security Technologies (NSSC) 0.00%, Biolargo (BLGO) 0.00%. Napco Security Technologies (NSSC) and Biolargo (BLGO) pays no regular dividend.

Which stock is riskier?

By one-year price volatility, Ecolab (ECL) has been the steadiest (Ecolab (ECL) 21.2%, Napco Security Technologies (NSSC) 40.9%, Biolargo (BLGO) 92.9%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, ECL, NSSC and BLGO?

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