BLGO vs ERII vs NWPX Stock Comparison

Biolargo, Energy Recovery and NWPX Infrastructure Prices as of Oct 29, 2026 Peers: Industry group
BLGO Biolargo, Inc.
$0.06 -25.0% 1M -64.7% 1Y
Market cap
$19.72M
P/E
–
Revenue (TTM)
$4.08M
Div. yield
–
Water Treatment Industrials
1 win
ERII Energy Recovery, Inc.
$7.12 +5.5% 1M -58.5% 1Y
Market cap
$364.36M
P/E
23.9x
Revenue (TTM)
$120.57M
Div. yield
–
Water Treatment Industrials
2 wins

Head to Head

9 decided of 12

NWPX Infrastructure leads on 6 of the 12 questions below (NWPX Infrastructure 6, Energy Recovery 2, Biolargo 1). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionBLGOERIINWPXLeader
Larger companyMarket capitalisation $19.72M $364.36M $943.80M NWPX
Cheaper on earningsLower P/E, profitable companies only -1.3x 23.9x 17.7x NWPX
Cheaper on forward earningsLower price / next fiscal year consensus EPS — — 18.9x –
Faster revenue growthRevenue growth, trailing twelve months -70.9% -15.0% +15.9% NWPX
More profitableNet margin, trailing twelve months -354.8% 12.7% 8.9% ERII
Better return on capitalReturn on invested capital — — 12.5% –
Less leveragedLower net debt / EBITDA -0.2x — 0.2x BLGO
Higher dividend yieldTrailing dividend yield — — — –
Better 1-year returnPrice return, last 12 months -64.7% -58.5% +76.0% NWPX
Better 5-year returnAnnualised price return, 5 years -19.7%/yr -18.9%/yr +32.8%/yr NWPX
Less volatileAnnualised volatility, 1 year 92.9% 63.8% 40.0% NWPX
Higher overall scoreMean of the five percentile scores vs peers 12/100 91/100 80/100 ERII

Percentile Scorecard

BLGOERIINWPX

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

AxisBLGOERIINWPX
Valuation 10 #19 of 21 95 #2 of 21 100 #1 of 21
Growth 0 #19 of 19 72 #6 of 19 94 #2 of 19
Profitability 7 #15 of 16 87 #3 of 16 80 #4 of 16
Financial Health 10 #19 of 21 100 #1 of 21 70 #7 of 21
Shareholder Returns 33 #7 of 10 100 #1 of 10 56 #5 of 10
Overall 12 91 80
  • BLGO ranked among 22 companies in Environmental Equipment
  • ERII ranked among 22 companies in Environmental Equipment
  • NWPX ranked among 22 companies in Environmental Equipment

Price Performance

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

Returns

PeriodBLGOERIINWPXSPY
1 month -25.0%+5.5%-4.3% +0.7%
3 months -45.5%-15.5%-22.8% +3.7%
6 months -60.0%-35.7%-0.3% +7.1%
Year to date -66.7%-47.2%+56.8% +12.8%
1 year -64.7%-58.5%+76.0% +11.9%
3 years -64.7%-49.7%+253.8% +85.2%
3 years, per year -29.3%-20.5%+52.4% +22.8%
5 years -66.7%-65.0%+312.5% +67.6%
5 years, per year -19.7%-18.9%+32.8% +10.9%
10 years -91.8%-43.1%+647.0% +262.0%
10 years, per year -22.1%-5.5%+22.3% +13.7%

Risk

MeasureBLGOERIINWPXSPY
Volatility, 1Y 92.9%63.8%40.0% 12.7%
Downside volatility, 1Y 138.6%82.6%34.4% 12.6%
Beta vs S&P 500, 1Y 0.201.701.30 1.00
Return / volatility, 1Y -0.70-0.921.90 0.94
Max drawdown, 5Y -85.0%-78.3%-35.8% -25.4%
From 52-week high -70.0%-58.7%-34.6% -1.2%
52-week high $0.20$17.26$149.94 $779.14
52-week low $0.06$6.64$53.85 $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.

MultipleBLGOERIINWPX
P/E now vs peer median -1.3xmedian 25.4x 23.9xmedian 25.4x 17.7xmedian 25.4x
P/S now vs peer median 4.8xmedian 2.5x 3.0xmedian 2.5x 1.6xmedian 2.5x
EV/EBITDA now vs peer median -1.3xmedian 17.9x 15.0xmedian 17.9x 10.3xmedian 17.9x
P/FCF now vs peer median -1.9xmedian 22.3x 9.4xmedian 22.3x 10.9xmedian 22.3x
P/B now vs peer median -7.2xmedian 1.8x 2.1xmedian 1.8x 2.2xmedian 1.8x
PEG now vs peer median —median 1.73 1.43median 1.73 0.54median 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 monthsBLGOERIINWPX
Revenue $4.08M $120.57M $602.76M
Gross profit $1.63M $77.18M $125.97M
Operating income -$18.12M $14.23M $71.15M
Net income -$18.79M $15.34M $53.48M
Free cash flow -$10.56M $38.60M $86.83M
R&D $3.27M $12.22M –
EPS (diluted) – $0.30 $5.45
Cash & equivalents $2.19M $61.44M $6.06M
Total debt $4.85M – $21.50M
Shares (diluted) – 51.46M 9.81M
Enterprise value $4.11M $39.53M $901.89M

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
MetricBLGOERIINWPX
P/E -1.3x 23.9x 17.7x
P/FCF -1.9x 9.4x 10.9x
P/Operating cash flow -1.9x 8.8x 8.8x
P/S 4.8x 3.0x 1.6x
P/B -7.2x 2.1x 2.2x
P/Tangible book -7.2x 2.1x 2.3x
EV/EBITDA -1.3x 15.0x 10.3x
EV/EBIT -1.2x 19.1x 13.5x
EV/Revenue 5.5x 2.3x 1.6x
EV/FCF -2.1x 7.0x 11.0x
EV/Operating cash flow -2.2x 6.6x 9.0x
PEG (3Y EPS CAGR) – 1.43 0.54

Growth

14 metrics
MetricBLGOERIINWPX
Revenue growth (1Y) -70.9% -15.0% 15.9%
Revenue CAGR (3Y) -22.5% 4.1% 11.0%
Gross profit growth (1Y) -74.4% -18.5% 26.8%
Gross profit CAGR (3Y) -27.8% 2.0% 16.2%
Operating income growth (1Y) -185.8% -34.1% 47.2%
Operating income CAGR (3Y) -60.3% 17.3% 25.2%
Net income growth (1Y) -184.9% -36.4% 46.0%
Net income CAGR (3Y) -62.6% 13.3% 31.4%
EPS growth (1Y) – -32.7% 46.1%
EPS CAGR (3Y) – 16.8% 32.7%
Operating cash flow growth (1Y) -37.9% 98.7% 58.5%
Operating cash flow CAGR (3Y) -62.1% 62.2% 43.1%
Free cash flow growth (1Y) -40.8% 91.3% 80.1%
Free cash flow CAGR (3Y) -57.1% 76.4% 92.6%

Profitability

14 metrics
MetricBLGOERIINWPX
Gross margin 40.0% 64.0% 20.9%
EBITDA margin -434.2% 15.0% 15.4%
Operating margin -443.9% 11.8% 11.8%
Pretax margin -458.1% 14.6% 11.4%
Net margin -354.8% 12.7% 8.9%
FCF margin -258.6% 32.0% 14.4%
Operating cash flow margin -252.8% 34.2% 17.7%
Return on equity – 8.6% 12.5%
Return on assets -246.7% 7.5% 7.9%
Return on invested capital – – 12.5%
Return on capital employed -635.4% 7.7% 12.9%
Asset turnover 0.5x 0.6x 0.9x
Cash conversion (OCF / net income) 0.5x 2.7x 2.0x
Stock comp / revenue 59.3% 5.9% 1.2%

Financial Health

11 metrics
MetricBLGOERIINWPX
Debt / assets 72.8% – 3.1%
Debt / equity -1.8x – 0.0x
Net debt / EBITDA -0.2x – 0.2x
Debt / FCF -0.5x – 0.2x
Liabilities / assets 140.9% 12.8% 37.0%
Equity / assets -40.9% 87.2% 63.0%
Interest coverage -22.5x – 48.6x
Current ratio 0.7x 8.1x 2.6x
Quick ratio 0.6x 5.8x 1.8x
Cash ratio 0.5x 5.0x 0.0x
Altman Z-score -42.24 11.10 4.40

Shareholder Returns

7 metrics
MetricBLGOERIINWPX
Dividend yield – – –
Net buyback yield -2.9% 9.4% 0.7%
Shareholder yield -2.9% 9.4% 0.7%
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.

ConsensusBLGOERIINWPX
Forward P/E – – 18.9xFY2026
EPS, next fiscal year $-0.05FY2026 $-0.20FY2026 $5.19FY2026
EPS growth, next FY – -147.6%FY2026 +45.8%FY2026
EPS growth, the year after – – -7.5%
Revenue, next fiscal year $5.48MFY2026 $69.90MFY2026 $573.90MFY2026
Revenue growth, next FY -29.4%FY2026 -48.2%FY2026 +9.1%FY2026
Revenue growth, the year after +180.2% +45.2% +3.8%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersBLGOERIINWPX
Held by institutions – 85.0% 89.5%
Institutions holding – 197 225
Change in shares held, QoQ – -1.1% +4.6%
Institutions buying – 120 125
Institutions selling – 45 65
Buyers to sellers – 2.67 1.92

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.

BLGOERIINWPX
BLGO 1.00 -0.03 0.02
ERII -0.03 1.00 0.10
NWPX 0.02 0.10 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, BLGO, ERII and NWPX?

NWPX Infrastructure (NWPX) is the largest by market capitalisation: Biolargo (BLGO) $19.72M, Energy Recovery (ERII) $364.36M, NWPX Infrastructure (NWPX) $943.80M.

Which stock is cheaper, BLGO, ERII and NWPX?

NWPX Infrastructure (NWPX) trades on the lowest price-to-earnings ratio (Biolargo (BLGO) -1.3x, Energy Recovery (ERII) 23.9x, NWPX Infrastructure (NWPX) 17.7x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

NWPX Infrastructure (NWPX) grew revenue fastest over the trailing twelve months: Biolargo (BLGO) -70.9%, Energy Recovery (ERII) -15.0%, NWPX Infrastructure (NWPX) +15.9%.

Which company is more profitable?

Energy Recovery (ERII) has the highest net margin (Biolargo (BLGO) -354.8%, Energy Recovery (ERII) 12.7%, NWPX Infrastructure (NWPX) 8.9%).

Which stock has performed better?

Over the past year NWPX Infrastructure (NWPX) returned the most: Biolargo (BLGO) -64.7%, Energy Recovery (ERII) -58.5%, NWPX Infrastructure (NWPX) +76.0%. Over five years, NWPX Infrastructure (NWPX) compounded fastest (Biolargo (BLGO) -19.7%/yr, Energy Recovery (ERII) -18.9%/yr, NWPX Infrastructure (NWPX) +32.8%/yr). Returns are price only, before dividends.

Which stock is riskier?

By one-year price volatility, NWPX Infrastructure (NWPX) has been the steadiest (Biolargo (BLGO) 92.9%, Energy Recovery (ERII) 63.8%, NWPX Infrastructure (NWPX) 40.0%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, BLGO, ERII and NWPX?

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