BLGO vs AIRJ vs ECL Stock Comparison

Biolargo, AirJoule Technologies and Ecolab Prices as of Oct 29, 2026 Peers: Industry group
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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
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
7 wins

Head to Head

8 decided of 12

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

QuestionBLGOAIRJECLLeader
Larger companyMarket capitalisation $19.90M $177.13M $84.51B ECL
Cheaper on earningsLower P/E, profitable companies only -1.4x -2.1x 40.6x –
Cheaper on forward earningsLower price / next fiscal year consensus EPS — — 38.1x –
Faster revenue growthRevenue growth, trailing twelve months -70.9% — +9.3% ECL
More profitableNet margin, trailing twelve months -354.8% — 12.0% ECL
Better return on capitalReturn on invested capital — — 10.0% –
Less leveragedLower net debt / EBITDA -0.2x — 3.1x BLGO
Higher dividend yieldTrailing dividend yield 0.00% 0.00% 0.01% –
Better 1-year returnPrice return, last 12 months -64.7% -46.9% +16.9% ECL
Better 5-year returnAnnualised price return, 5 years -19.7%/yr — +6.3%/yr ECL
Less volatileAnnualised volatility, 1 year 92.9% 85.3% 21.2% ECL
Higher overall scoreMean of the five percentile scores vs peers 12/100 41/100 64/100 ECL

Percentile Scorecard

BLGOAIRJECL

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

AxisBLGOAIRJECL
Valuation 10 #19 of 21 45 #12 of 21 50 #11 of 21
Growth 0 #19 of 19 6 #18 of 19 83 #4 of 19
Profitability 7 #15 of 16 47 #9 of 16 93 #2 of 16
Financial Health 10 #19 of 21 95 #2 of 21 25 #16 of 21
Shareholder Returns 33 #7 of 10 11 #9 of 10 67 #4 of 10
Overall 12 41 64
  • BLGO ranked among 22 companies in Environmental Equipment
  • AIRJ ranked among 22 companies in Environmental Equipment
  • ECL ranked among 22 companies in Environmental Equipment

Price Performance

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

Returns

PeriodBLGOAIRJECLSPY
1 month -25.0%-30.6%+8.3% +0.7%
3 months -45.5%-37.6%+7.7% +3.7%
6 months -60.0%-11.0%+15.4% +7.1%
Year to date -66.7%-30.5%+14.6% +12.8%
1 year -64.7%-46.9%+16.9% +11.9%
3 years -64.7%-74.3%+89.0% +85.2%
3 years, per year -29.3%-36.5%+23.7% +22.8%
5 years -66.7%—+35.4% +67.6%
5 years, per year -19.7%—+6.3% +10.9%
10 years -91.8%—+161.4% +262.0%
10 years, per year -22.1%—+10.1% +13.7%

Risk

MeasureBLGOAIRJECLSPY
Volatility, 1Y 92.9%85.3%21.2% 12.7%
Downside volatility, 1Y 138.6%75.6%20.4% 12.6%
Beta vs S&P 500, 1Y 0.202.590.48 1.00
Return / volatility, 1Y -0.70-0.550.79 0.94
Max drawdown, 5Y -85.0%-91.4%-44.3% -25.4%
From 52-week high -70.0%-57.2%-2.4% -1.2%
52-week high $0.20$6.40$308.35 $779.14
52-week low $0.06$2.51$245.73 $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.

MultipleBLGOAIRJECL
P/E now vs peer median -1.3xmedian 25.4x -2.3xmedian 25.4x 40.5xmedian 25.4x
P/S now vs peer median 4.8xmedian 2.5x —median 2.5x 4.9xmedian 2.5x
EV/EBITDA now vs peer median -1.3xmedian 17.9x -11.4xmedian 17.9x 24.3xmedian 17.9x
P/FCF now vs peer median -1.9xmedian 22.3x -27.7xmedian 22.3x 47.0xmedian 22.3x
P/B now vs peer median -7.2xmedian 1.8x 0.8xmedian 1.8x 8.1xmedian 1.8x
PEG now vs peer median —median 1.73 0.01median 1.73 2.04median 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 monthsBLGOAIRJECL
Revenue $4.08M – $17.37B
Gross profit $1.63M – $7.63B
Operating income -$18.12M -$13.96M $2.90B
Net income -$18.79M -$84.79M $2.10B
Free cash flow -$10.56M -$7.26M $1.80B
R&D $3.27M $607.33K –
EPS (diluted) – $-1.22 $7.38
Cash & equivalents $2.19M $41.42M $722.30M
Total debt $4.85M – $13.19B
Shares (diluted) – 69.74M 282.10M
Enterprise value $5.16M $56.75M $77.49B

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
MetricBLGOAIRJECL
P/E -1.3x -2.3x 40.5x
P/FCF -1.9x -27.7x 47.0x
P/Operating cash flow -1.9x -27.8x 27.9x
P/S 4.8x – 4.9x
P/B -7.2x 0.8x 8.1x
P/Tangible book -7.2x -0.8x 15.8x
EV/EBITDA -1.3x -11.4x 24.3x
EV/EBIT -1.2x -11.4x 33.4x
EV/Revenue 5.5x – 5.6x
EV/FCF -2.1x -22.0x 54.0x
EV/Operating cash flow -2.2x -22.1x 32.0x
PEG (3Y EPS CAGR) – 0.01 2.04

Growth

14 metrics
MetricBLGOAIRJECL
Revenue growth (1Y) -70.9% – 9.3%
Revenue CAGR (3Y) -22.5% – 4.9%
Gross profit growth (1Y) -74.4% – 8.4%
Gross profit CAGR (3Y) -27.8% – 8.8%
Operating income growth (1Y) -185.8% -11.3% 11.3%
Operating income CAGR (3Y) -60.3% -46.4% 17.2%
Net income growth (1Y) -184.9% -322.5% 4.7%
Net income CAGR (3Y) -62.6% -288.6% 18.8%
EPS growth (1Y) – -292.0% 6.2%
EPS CAGR (3Y) – -176.6% 19.8%
Operating cash flow growth (1Y) -37.9% 18.3% 15.2%
Operating cash flow CAGR (3Y) -62.1% -47.2% 7.8%
Free cash flow growth (1Y) -40.8% 18.2% 15.6%
Free cash flow CAGR (3Y) -57.1% -47.4% 1.8%

Profitability

14 metrics
MetricBLGOAIRJECL
Gross margin 40.0% – 43.9%
EBITDA margin -434.2% – 22.9%
Operating margin -443.9% – 16.7%
Pretax margin -458.1% – 15.0%
Net margin -354.8% – 12.0%
FCF margin -258.6% – 10.3%
Operating cash flow margin -252.8% – 17.4%
Return on equity – -34.6% 20.4%
Return on assets -246.7% -28.1% 6.9%
Return on invested capital – – 10.0%
Return on capital employed -635.4% -4.7% 12.0%
Asset turnover 0.5x – 0.6x
Cash conversion (OCF / net income) 0.5x 0.1x 1.4x
Stock comp / revenue 59.3% – 0.8%

Financial Health

11 metrics
MetricBLGOAIRJECL
Debt / assets 72.8% – 42.4%
Debt / equity -1.8x – 1.3x
Net debt / EBITDA -0.2x – 3.1x
Debt / FCF -0.5x – 7.3x
Liabilities / assets 140.9% 19.0% 66.4%
Equity / assets -40.9% 81.0% 33.6%
Interest coverage -22.5x – 8.0x
Current ratio 0.7x 19.7x 1.1x
Quick ratio 0.6x 18.9x 0.7x
Cash ratio 0.5x 18.9x 0.1x
Altman Z-score -42.24 – 3.96

Shareholder Returns

7 metrics
MetricBLGOAIRJECL
Dividend yield – – 1.0%
Net buyback yield -2.9% -18.1% 1.1%
Shareholder yield -2.9% -18.1% 2.1%
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.

ConsensusBLGOAIRJECL
Forward P/E – – 38.1xFY2026
EPS, next fiscal year $-0.05FY2026 $-1.05FY2026 $7.90FY2026
EPS growth, next FY – – +4.9%FY2026
EPS growth, the year after – – +23.2%
Revenue, next fiscal year $5.48MFY2026 $168.27KFY2026 $17.26BFY2026
Revenue growth, next FY -29.4%FY2026 +205.9%FY2026 +7.3%FY2026
Revenue growth, the year after +180.2% +3,073.8% +5.4%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersBLGOAIRJECL
Held by institutions – 24.6% 80.0%
Institutions holding – 119 1,712
Change in shares held, QoQ – +8.4% +1.4%
Institutions buying – 84 764
Institutions selling – 19 679
Buyers to sellers – 4.42 1.13

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.

BLGOAIRJECL
BLGO 1.00 -0.06 0.03
AIRJ -0.06 1.00 0.10
ECL 0.03 0.10 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, BLGO, AIRJ and ECL?

Ecolab (ECL) is the largest by market capitalisation: Biolargo (BLGO) $19.90M, AirJoule Technologies (AIRJ) $177.13M, Ecolab (ECL) $84.51B.

Which company is growing faster?

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

Which company is more profitable?

Ecolab (ECL) has the highest net margin (Biolargo (BLGO) -354.8%, Ecolab (ECL) 12.0%).

Which stock has performed better?

Over the past year Ecolab (ECL) returned the most: Biolargo (BLGO) -64.7%, AirJoule Technologies (AIRJ) -46.9%, Ecolab (ECL) +16.9%. Over five years, Ecolab (ECL) compounded fastest (Biolargo (BLGO) -19.7%/yr, Ecolab (ECL) +6.3%/yr). Returns are price only, before dividends.

Which pays a higher dividend?

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

Which stock is riskier?

By one-year price volatility, Ecolab (ECL) has been the steadiest (Biolargo (BLGO) 92.9%, AirJoule Technologies (AIRJ) 85.3%, Ecolab (ECL) 21.2%). Volatility measures how widely the price swings, not the risk of the business.

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

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