BLGO vs PNR vs XYL Stock Comparison

Biolargo, Pentair and Xylem Prices as of Oct 29, 2026 Peers: Industry group
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
PNR PENTAIR plc
$65.78 +23.0% 1M -38.9% 1Y
Market cap
$10.56B
P/E
17.3x
Revenue (TTM)
$3.97B
Div. yield
0.02%
Pumps and Valves Industrials
6 wins
XYL Xylem Inc.
$90.81 -10.0% 1M -40.6% 1Y
Market cap
$21.53B
P/E
19.9x
Revenue (TTM)
$9.06B
Div. yield
0.02%
Water Treatment Industrials
5 wins

Head to Head

12 decided of 12

Pentair leads on 6 of the 12 questions below (Pentair 6, Xylem 5, Biolargo 1). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionBLGOPNRXYLLeader
Larger companyMarket capitalisation $19.90M $10.56B $21.53B XYL
Cheaper on earningsLower P/E, profitable companies only -1.4x 17.3x 19.9x PNR
Cheaper on forward earningsLower price / next fiscal year consensus EPS — 14.5x 17.3x PNR
Faster revenue growthRevenue growth, trailing twelve months -70.9% -3.9% +1.9% XYL
More profitableNet margin, trailing twelve months -354.8% 15.4% 11.9% PNR
Better return on capitalReturn on invested capital — 12.5% 8.3% PNR
Less leveragedLower net debt / EBITDA -0.2x 1.6x 1.1x BLGO
Higher dividend yieldTrailing dividend yield 0.00% 0.02% 0.02% XYL
Better 1-year returnPrice return, last 12 months -64.7% -38.9% -40.6% PNR
Better 5-year returnAnnualised price return, 5 years -19.7%/yr -2.3%/yr -7.0%/yr PNR
Less volatileAnnualised volatility, 1 year 92.9% 36.3% 30.5% XYL
Higher overall scoreMean of the five percentile scores vs peers 12/100 62/100 79/100 XYL

Percentile Scorecard

BLGOPNRXYL

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

AxisBLGOPNRXYL
Valuation 10 #19 of 21 71 #59 of 203 90 #3 of 21
Growth 0 #19 of 19 32 #128 of 188 89 #3 of 19
Profitability 7 #15 of 16 82 #33 of 183 73 #5 of 16
Financial Health 10 #19 of 21 46 #118 of 216 55 #10 of 21
Shareholder Returns 33 #7 of 10 79 #33 of 152 89 #2 of 10
Overall 12 62 79
  • BLGO ranked among 22 companies in Environmental Equipment
  • PNR ranked among 222 companies in Machinery
  • XYL ranked among 22 companies in Environmental Equipment

Price Performance

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

Returns

PeriodBLGOPNRXYLSPY
1 month -25.0%+23.0%-10.0% +0.7%
3 months -45.5%-0.6%-22.3% +3.7%
6 months -60.0%-18.5%-23.1% +7.1%
Year to date -66.7%-36.8%-33.3% +12.8%
1 year -64.7%-38.9%-40.6% +11.9%
3 years -64.7%+12.0%+1.7% +85.2%
3 years, per year -29.3%+3.9%+0.6% +22.8%
5 years -66.7%-11.1%-30.5% +67.6%
5 years, per year -19.7%-2.3%-7.0% +10.9%
10 years -91.8%+19.3%+86.8% +262.0%
10 years, per year -22.1%+1.8%+6.4% +13.7%

Risk

MeasureBLGOPNRXYLSPY
Volatility, 1Y 92.9%36.3%30.5% 12.7%
Downside volatility, 1Y 138.6%40.4%36.3% 12.6%
Beta vs S&P 500, 1Y 0.200.940.66 1.00
Return / volatility, 1Y -0.70-1.07-1.33 0.94
Max drawdown, 5Y -85.0%-53.7%-45.4% -25.4%
From 52-week high -70.0%-39.5%-40.6% -1.2%
52-week high $0.20$108.69$152.95 $779.14
52-week low $0.06$52.11$88.24 $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.

MultipleBLGOPNRXYL
P/E now vs peer median -1.3xmedian 25.4x 17.1xmedian 25.8x 19.5xmedian 25.4x
P/S now vs peer median 4.8xmedian 2.5x 2.6xmedian 1.9x 2.3xmedian 2.5x
EV/EBITDA now vs peer median -1.3xmedian 17.9x 13.2xmedian 14.6x 11.9xmedian 17.9x
P/FCF now vs peer median -1.9xmedian 22.3x 16.2xmedian 22.2x 22.6xmedian 22.3x
P/B now vs peer median -7.2xmedian 1.8x 2.7xmedian 2.2x 2.0xmedian 1.8x
PEG now vs peer median —median 1.73 2.23median 1.45 0.62median 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 monthsBLGOPNRXYL
Revenue $4.08M $3.97B $9.06B
Gross profit $1.63M $1.64B $3.61B
Operating income -$18.12M $777.40M $1.37B
Net income -$18.79M $612.20M $1.08B
Free cash flow -$10.56M $646.60M $921.00M
R&D $3.27M $94.10M $231.00M
EPS (diluted) – $3.82 $4.64
Cash & equivalents $2.19M $74.00M $708.00M
Total debt $4.85M $1.48B $2.90B
Shares (diluted) – 160.30M 233.04M
Enterprise value $5.16M $10.23B $17.26B

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
MetricBLGOPNRXYL
P/E -1.3x 17.1x 19.5x
P/FCF -1.9x 16.2x 22.6x
P/Operating cash flow -1.9x 14.5x 16.4x
P/S 4.8x 2.6x 2.3x
P/B -7.2x 2.7x 2.0x
P/Tangible book -7.2x 3.7x 2.6x
EV/EBITDA -1.3x 13.2x 11.9x
EV/EBIT -1.2x 15.3x 16.8x
EV/Revenue 5.5x 3.0x 2.5x
EV/FCF -2.1x 18.4x 25.0x
EV/Operating cash flow -2.2x 16.4x 18.1x
PEG (3Y EPS CAGR) – 2.23 0.62

Growth

14 metrics
MetricBLGOPNRXYL
Revenue growth (1Y) -70.9% -3.9% 1.9%
Revenue CAGR (3Y) -22.5% -1.3% 10.3%
Gross profit growth (1Y) -74.4% -1.2% 6.0%
Gross profit CAGR (3Y) -27.8% 3.4% 12.5%
Operating income growth (1Y) -185.8% -8.3% 20.7%
Operating income CAGR (3Y) -60.3% 4.4% 29.1%
Net income growth (1Y) -184.9% -6.4% 14.1%
Net income CAGR (3Y) -62.6% 6.3% 30.0%
EPS growth (1Y) – -3.6% 19.6%
EPS CAGR (3Y) – 7.7% 31.7%
Operating cash flow growth (1Y) -37.9% -14.8% -0.1%
Operating cash flow CAGR (3Y) -62.1% 6.8% 19.6%
Free cash flow growth (1Y) -40.8% -17.4% -0.4%
Free cash flow CAGR (3Y) -57.1% 7.7% 21.9%

Profitability

14 metrics
MetricBLGOPNRXYL
Gross margin 40.0% 41.2% 39.8%
EBITDA margin -434.2% 22.7% 21.3%
Operating margin -443.9% 19.6% 15.1%
Pretax margin -458.1% 17.5% 14.8%
Net margin -354.8% 15.4% 11.9%
FCF margin -258.6% 16.3% 10.2%
Operating cash flow margin -252.8% 18.3% 14.0%
Return on equity – 16.1% 10.3%
Return on assets -246.7% 9.2% 6.2%
Return on invested capital – 12.5% 8.3%
Return on capital employed -635.4% 13.5% 9.5%
Asset turnover 0.5x 0.6x 0.5x
Cash conversion (OCF / net income) 0.5x 1.2x 1.2x
Stock comp / revenue 59.3% 0.8% 0.6%

Financial Health

11 metrics
MetricBLGOPNRXYL
Debt / assets 72.8% 22.3% 16.7%
Debt / equity -1.8x 0.4x 0.3x
Net debt / EBITDA -0.2x 1.6x 1.1x
Debt / FCF -0.5x 2.3x 3.1x
Liabilities / assets 140.9% 42.1% 40.7%
Equity / assets -40.9% 57.9% 59.3%
Interest coverage -22.5x – 36.1x
Current ratio 0.7x 1.5x 1.4x
Quick ratio 0.6x 0.7x 0.9x
Cash ratio 0.5x 0.1x 0.2x
Altman Z-score -42.24 3.96 2.97

Shareholder Returns

7 metrics
MetricBLGOPNRXYL
Dividend yield – 1.6% 1.9%
Net buyback yield -2.9% 3.8% 7.5%
Shareholder yield -2.9% 5.5% 9.4%
Payout ratio (earnings) – 28.1% 37.4%
Payout ratio (FCF) – 26.6% 44.0%
Dividend growth (1Y) – 6.5% 6.6%
Dividend CAGR (3Y) – 6.2% 14.1%

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.

ConsensusBLGOPNRXYL
Forward P/E – 14.5xFY2026 17.3xFY2026
EPS, next fiscal year $-0.05FY2026 $4.55FY2026 $5.26FY2026
EPS growth, next FY – -7.5%FY2026 +3.5%FY2026
EPS growth, the year after – +17.6% +13.7%
Revenue, next fiscal year $5.48MFY2026 $3.86BFY2026 $9.81BFY2026
Revenue growth, next FY -29.4%FY2026 -7.5%FY2026 +8.5%FY2026
Revenue growth, the year after +180.2% +10.5% +0.4%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersBLGOPNRXYL
Held by institutions – 95.0% 92.0%
Institutions holding – 720 1,093
Change in shares held, QoQ – -0.1% +0.2%
Institutions buying – 353 489
Institutions selling – 257 447
Buyers to sellers – 1.37 1.09

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.

BLGOPNRXYL
BLGO 1.00 0.01 0.07
PNR 0.01 1.00 0.19
XYL 0.07 0.19 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, BLGO, PNR and XYL?

Xylem (XYL) is the largest by market capitalisation: Biolargo (BLGO) $19.90M, Pentair (PNR) $10.56B, Xylem (XYL) $21.53B.

Which stock is cheaper, BLGO, PNR and XYL?

Pentair (PNR) trades on the lowest price-to-earnings ratio (Biolargo (BLGO) -1.4x, Pentair (PNR) 17.3x, Xylem (XYL) 19.9x). On next year's consensus earnings, Pentair (PNR) is cheapest (Pentair (PNR) 14.5x, Xylem (XYL) 17.3x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

Xylem (XYL) grew revenue fastest over the trailing twelve months: Biolargo (BLGO) -70.9%, Pentair (PNR) -3.9%, Xylem (XYL) +1.9%.

Which company is more profitable?

Pentair (PNR) has the highest net margin (Biolargo (BLGO) -354.8%, Pentair (PNR) 15.4%, Xylem (XYL) 11.9%). On return on invested capital, Pentair (PNR) leads (Pentair (PNR) 12.5%, Xylem (XYL) 8.3%).

Which stock has performed better?

Over the past year Pentair (PNR) returned the most: Biolargo (BLGO) -64.7%, Pentair (PNR) -38.9%, Xylem (XYL) -40.6%. Over five years, Pentair (PNR) compounded fastest (Biolargo (BLGO) -19.7%/yr, Pentair (PNR) -2.3%/yr, Xylem (XYL) -7.0%/yr). Returns are price only, before dividends.

Which pays a higher dividend?

Xylem (XYL) has the highest dividend yield: Biolargo (BLGO) 0.00%, Pentair (PNR) 0.02%, Xylem (XYL) 0.02%. Biolargo (BLGO) pays no regular dividend.

Which stock is riskier?

By one-year price volatility, Xylem (XYL) has been the steadiest (Biolargo (BLGO) 92.9%, Pentair (PNR) 36.3%, Xylem (XYL) 30.5%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, BLGO, PNR and XYL?

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