BLDP vs WPRT vs PLUG Stock Comparison

Ballard Power Systems, Westport Fuel Systems and Plug Power Prices as of Oct 26, 2026 Peers: Industry group
PLUG Plug Power Inc
$1.37 -30.8% 1M -53.6% 1Y
Market cap
$1.95B
P/E
–
Revenue (TTM)
$744.09M
Div. yield
–
Hydrogen Energy
2 wins

Head to Head

9 decided of 12

Ballard Power Systems leads on 4 of the 12 questions below (Ballard Power Systems 4, Westport Fuel Systems 3, Plug Power 2). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionBLDPWPRTPLUGLeader
Larger companyMarket capitalisation $466.74M $38.57M $1.95B PLUG
Cheaper on earningsLower P/E, profitable companies only -5.8x -0.9x -1.2x –
Cheaper on forward earningsLower price / next fiscal year consensus EPS — — — –
Faster revenue growthRevenue growth, trailing twelve months +46.4% -73.4% +10.6% BLDP
More profitableNet margin, trailing twelve months -75.7% -493.2% -220.6% BLDP
Better return on capitalReturn on invested capital — -39.8% -188.4% WPRT
Less leveragedLower net debt / EBITDA — 1.0x 0.1x PLUG
Higher dividend yieldTrailing dividend yield 0.00% — 0.00% –
Better 1-year returnPrice return, last 12 months -58.4% +11.0% -53.6% WPRT
Better 5-year returnAnnualised price return, 5 years -38.4%/yr -41.8%/yr -47.5%/yr BLDP
Less volatileAnnualised volatility, 1 year 73.1% 53.2% 78.2% WPRT
Higher overall scoreMean of the five percentile scores vs peers 67/100 25/100 23/100 BLDP

Percentile Scorecard

BLDPWPRTPLUG

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

AxisBLDPWPRTPLUG
Valuation 58 #26 of 61 10 #182 of 203 0 #11 of 11
Growth 81 #12 of 58 30 #132 of 187 70 #4 of 11
Profitability 48 #29 of 55 5 #176 of 185 0 #9 of 9
Financial Health 80 #15 of 71 54 #102 of 219 20 #9 of 11
Shareholder Returns – – –
Overall 67 25 23
  • BLDP ranked among 71 companies in Clean Energy Equipment
  • WPRT ranked among 222 companies in Machinery
  • PLUG ranked among 11 companies in Renewable Fuels

Price Performance

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

Returns

PeriodBLDPWPRTPLUGSPY
1 month -32.9%+12.1%-30.8% -0.8%
3 months -50.2%+15.6%-33.5% +3.5%
6 months -56.0%+12.1%-55.5% +7.0%
Year to date -43.7%+41.4%-30.5% +12.2%
1 year -58.4%+11.0%-53.6% +13.0%
3 years -54.7%-58.0%-76.8% +86.3%
3 years, per year -23.2%-25.1%-38.6% +23.1%
5 years -91.1%-93.3%-96.0% +68.6%
5 years, per year -38.4%-41.8%-47.5% +11.0%
10 years -35.3%-86.2%-13.3% +258.0%
10 years, per year -4.3%-18.0%-1.4% +13.6%

Risk

MeasureBLDPWPRTPLUGSPY
Volatility, 1Y 73.1%53.2%78.2% 12.7%
Downside volatility, 1Y 68.9%47.3%70.0% 12.7%
Beta vs S&P 500, 1Y 2.750.672.25 1.00
Return / volatility, 1Y -0.800.21-0.68 1.02
Max drawdown, 5Y -94.7%-96.1%-98.4% -25.4%
From 52-week high -77.6%-10.1%-66.9% -1.8%
52-week high $6.38$2.47$4.14 $779.14
52-week low $1.43$1.54$1.37 $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.

MultipleBLDPWPRTPLUG
P/E now vs peer median -5.3xmedian 25.4x -0.9xmedian 26.0x -1.2xmedian 10.9x
P/S now vs peer median 4.1xmedian 2.1x 4.5xmedian 1.9x 2.6xmedian 1.2x
EV/EBITDA now vs peer median 6.4xmedian 17.5x -0.7xmedian 14.0x -1.4xmedian 14.0x
P/FCF now vs peer median -8.2xmedian 27.3x -4.4xmedian 21.4x -3.4xmedian 14.0x
P/B now vs peer median 0.8xmedian 1.7x 0.7xmedian 2.2x 3.3xmedian 1.2x
PEG now vs peer median -0.33median 0.77 -0.12median 1.26 -0.21median 0.19

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 monthsBLDPWPRTPLUG
Revenue $106.16M $8.50M $744.09M
Gross profit $17.41M $952.00K -$138.00M
Operating income -$31.41M -$23.52M -$1.29B
Net income -$77.27M -$41.91M -$1.71B
Free cash flow -$52.66M -$8.83M -$560.50M
R&D $42.19M $5.35M $53.94M
EPS (diluted) $-0.52 $-2.42 $-1.18
Cash & equivalents $502.10M $23.95M $161.90M
Total debt – $972.00K $314.00K
Shares (diluted) 155.19M 17.34M 1.39B
Enterprise value -$1.62B -$198.53M $1.04B

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
MetricBLDPWPRTPLUG
P/E -5.3x -0.9x -1.2x
P/FCF -8.2x -4.4x -3.4x
P/Operating cash flow -10.9x -4.9x -4.0x
P/S 4.1x 4.5x 2.6x
P/B 0.8x 0.7x 3.3x
P/Tangible book 0.8x 0.7x 3.4x
EV/EBITDA 6.4x -0.7x -1.4x
EV/EBIT 2.4x -0.7x -1.4x
EV/Revenue -0.7x 1.8x 2.4x
EV/FCF 1.4x -1.8x -3.1x
EV/Operating cash flow 1.9x -2.0x -3.6x
PEG (3Y EPS CAGR) -0.33 -0.12 -0.21

Growth

14 metrics
MetricBLDPWPRTPLUG
Revenue growth (1Y) 46.4% -73.4% 10.6%
Revenue CAGR (3Y) 15.8% -70.1% -5.4%
Gross profit growth (1Y) 272.0% -72.0% 70.1%
Gross profit CAGR (3Y) 48.9% -72.0% 20.4%
Operating income growth (1Y) 81.6% -71.1% 31.3%
Operating income CAGR (3Y) 39.2% -35.5% -15.4%
Net income growth (1Y) 74.0% 21.9% 13.3%
Net income CAGR (3Y) 18.2% 7.3% -26.9%
EPS growth (1Y) 73.0% 18.0% 32.5%
EPS CAGR (3Y) 16.3% 7.7% 5.5%
Operating cash flow growth (1Y) -107.5% 55.5% 20.0%
Operating cash flow CAGR (3Y) 13.1% 10.8% 22.8%
Free cash flow growth (1Y) -110.5% 55.5% 31.6%
Free cash flow CAGR (3Y) 13.0% 27.8% 30.6%

Profitability

14 metrics
MetricBLDPWPRTPLUG
Gross margin 16.4% 11.2% -18.5%
EBITDA margin -11.0% -267.3% -168.2%
Operating margin -29.6% -276.7% -172.8%
Pretax margin -11.8% -423.1% -229.0%
Net margin -75.7% -493.2% -220.6%
FCF margin -49.6% -103.9% -75.3%
Operating cash flow margin -37.3% -93.2% -64.9%
Return on equity -14.0% -29.3% -251.3%
Return on assets -12.2% -19.9% -75.0%
Return on invested capital – -39.8% -188.4%
Return on capital employed -5.2% -42.2% -72.0%
Asset turnover 0.2x 0.1x 0.3x
Cash conversion (OCF / net income) 0.5x 0.2x 0.3x
Stock comp / revenue 18.7% 8.2% 7.2%

Financial Health

11 metrics
MetricBLDPWPRTPLUG
Debt / assets – 1.1% 0.0%
Debt / equity – 0.0x 0.0x
Net debt / EBITDA – 1.0x 0.1x
Debt / FCF – -0.1x 0.0x
Liabilities / assets 13.1% 38.5% 73.2%
Equity / assets 86.9% 61.5% 26.8%
Interest coverage -36.4x -100.9x -17.9x
Current ratio 11.2x 1.1x 2.3x
Quick ratio 10.3x 1.1x 0.8x
Cash ratio 9.9x 0.8x 0.3x
Altman Z-score -0.71 -19.40 -6.08

Shareholder Returns

7 metrics
MetricBLDPWPRTPLUG
Dividend yield – – –
Net buyback yield – 287.1% -2.5%
Shareholder yield – 287.1% -2.5%
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.

ConsensusBLDPWPRTPLUG
EPS, next fiscal year $-0.18FY2026 $-1.37FY2026 $-0.41FY2026
Revenue, next fiscal year $115.35MFY2026 $10.34MFY2026 $799.33MFY2026
Revenue growth, next FY +17.0%FY2026 -55.7%FY2026 +12.6%FY2026
Revenue growth, the year after +40.4% +10.1% +28.0%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersBLDPWPRTPLUG
Held by institutions 34.7% 21.0% 58.3%
Institutions holding 170 46 508
Change in shares held, QoQ +16.3% +70.5% +8.0%
Institutions buying 101 16 276
Institutions selling 40 13 105
Buyers to sellers 2.53 1.23 2.63

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.

BLDPWPRTPLUG
BLDP 1.00 0.17 0.55
WPRT 0.17 1.00 0.20
PLUG 0.55 0.20 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, BLDP, WPRT and PLUG?

Plug Power (PLUG) is the largest by market capitalisation: Ballard Power Systems (BLDP) $466.74M, Westport Fuel Systems (WPRT) $38.57M, Plug Power (PLUG) $1.95B.

Which company is growing faster?

Ballard Power Systems (BLDP) grew revenue fastest over the trailing twelve months: Ballard Power Systems (BLDP) +46.4%, Westport Fuel Systems (WPRT) -73.4%, Plug Power (PLUG) +10.6%.

Which company is more profitable?

Ballard Power Systems (BLDP) has the highest net margin (Ballard Power Systems (BLDP) -75.7%, Westport Fuel Systems (WPRT) -493.2%, Plug Power (PLUG) -220.6%). On return on invested capital, Westport Fuel Systems (WPRT) leads (Westport Fuel Systems (WPRT) -39.8%, Plug Power (PLUG) -188.4%).

Which stock has performed better?

Over the past year Westport Fuel Systems (WPRT) returned the most: Ballard Power Systems (BLDP) -58.4%, Westport Fuel Systems (WPRT) +11.0%, Plug Power (PLUG) -53.6%. Over five years, Ballard Power Systems (BLDP) compounded fastest (Ballard Power Systems (BLDP) -38.4%/yr, Westport Fuel Systems (WPRT) -41.8%/yr, Plug Power (PLUG) -47.5%/yr). Returns are price only, before dividends.

Which stock is riskier?

By one-year price volatility, Westport Fuel Systems (WPRT) has been the steadiest (Ballard Power Systems (BLDP) 73.1%, Westport Fuel Systems (WPRT) 53.2%, Plug Power (PLUG) 78.2%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, BLDP, WPRT and PLUG?

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, Ballard Power Systems (BLDP) leads on 4. 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.