HYSR vs PLUG vs WPRT Stock Comparison

Sunhydrogen, Plug Power and Aetherion Technologies Prices as of Oct 27, 2026 Peers: Industry group
HYSR Sunhydrogen, Inc.
$0.02 0.0% 1M -33.3% 1Y
Market cap
$94.62M
P/E
–
Revenue (TTM)
$1.25K
Div. yield
–
Fuel Cells Industrials
2 wins
PLUG Plug Power Inc
$1.40 -29.3% 1M -52.7% 1Y
Market cap
$1.97B
P/E
–
Revenue (TTM)
$744.09M
Div. yield
–
Hydrogen Energy
4 wins

Head to Head

9 decided of 12

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

QuestionHYSRPLUGWPRTLeader
Larger companyMarket capitalisation $94.62M $1.97B $37.53M PLUG
Cheaper on earningsLower P/E, profitable companies only -14.5x -1.2x -0.9x –
Cheaper on forward earningsLower price / next fiscal year consensus EPS — — — –
Faster revenue growthRevenue growth, trailing twelve months — +10.6% -73.4% PLUG
More profitableNet margin, trailing twelve months -522,521.9% -220.6% -493.2% PLUG
Better return on capitalReturn on invested capital — -188.4% -39.8% WPRT
Less leveragedLower net debt / EBITDA — 0.1x 1.0x PLUG
Higher dividend yieldTrailing dividend yield 0.00% 0.00% — –
Better 1-year returnPrice return, last 12 months -33.3% -52.7% +7.5% WPRT
Better 5-year returnAnnualised price return, 5 years -13.0%/yr -48.1%/yr -41.4%/yr HYSR
Less volatileAnnualised volatility, 1 year 141.6% 78.1% 53.3% WPRT
Higher overall scoreMean of the five percentile scores vs peers 45/100 23/100 25/100 HYSR

Percentile Scorecard

HYSRPLUGWPRT

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

AxisHYSRPLUGWPRT
Valuation 35 #40 of 61 0 #11 of 11 11 #181 of 203
Growth 21 #46 of 58 70 #4 of 11 29 #133 of 188
Profitability 6 #52 of 55 0 #9 of 9 4 #175 of 183
Financial Health 97 #3 of 71 20 #9 of 11 54 #100 of 217
Shareholder Returns 66 #11 of 30 – –
Overall 45 23 25
  • HYSR ranked among 71 companies in Clean Energy Equipment
  • PLUG ranked among 11 companies in Renewable Fuels
  • WPRT ranked among 222 companies in Machinery

Price Performance

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

Returns

PeriodHYSRPLUGWPRTSPY
1 month 0.0%-29.3%+6.4% -0.2%
3 months 0.0%-28.6%+22.7% +3.9%
6 months 0.0%-53.8%+9.6% +8.2%
Year to date -33.3%-28.9%+37.6% +12.9%
1 year -33.3%-52.7%+7.5% +12.3%
3 years +100.0%-76.3%-56.4% +87.4%
3 years, per year +26.0%-38.1%-24.2% +23.3%
5 years -50.0%-96.2%-93.1% +67.9%
5 years, per year -13.0%-48.1%-41.4% +10.9%
10 years 0.0%-10.3%-87.2% +261.1%
10 years, per year 0.0%-1.1%-18.6% +13.7%

Risk

MeasureHYSRPLUGWPRTSPY
Volatility, 1Y 141.6%78.1%53.3% 12.7%
Downside volatility, 1Y 620.4%70.0%47.3% 12.7%
Beta vs S&P 500, 1Y 1.522.250.65 1.00
Return / volatility, 1Y -0.24-0.670.14 0.97
Max drawdown, 5Y -88.9%-98.4%-96.1% -25.4%
From 52-week high -50.0%-66.2%-12.6% -1.2%
52-week high $0.04$4.14$2.47 $779.14
52-week low $0.02$1.37$1.54 $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.

MultipleHYSRPLUGWPRT
P/E now vs peer median -16.9xmedian 27.2x -1.2xmedian 10.6x -0.9xmedian 25.2x
P/S now vs peer median 91,987xmedian 2.4x 2.6xmedian 1.2x 4.4xmedian 1.9x
EV/EBITDA now vs peer median -11.0xmedian 18.4x -1.4xmedian 14.2x -0.6xmedian 14.0x
P/FCF now vs peer median -22.7xmedian 28.6x -3.5xmedian 14.1x -4.2xmedian 21.7x
P/B now vs peer median 3.6xmedian 1.7x 3.3xmedian 1.1x 0.7xmedian 2.3x
PEG now vs peer median 0.17median 0.79 -0.21median 0.19 -0.12median 1.32

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 monthsHYSRPLUGWPRT
Revenue $1.25K $744.09M $8.50M
Gross profit – -$138.00M $952.00K
Operating income -$7.52M -$1.29B -$23.52M
Net income -$6.53M -$1.71B -$41.91M
Free cash flow -$5.07M -$560.50M -$8.83M
R&D $4.33M $53.94M $5.35M
EPS (diluted) $0.00 $-1.18 $-2.42
Cash & equivalents $12.13M $161.90M $23.95M
Total debt – $314.00K $972.00K
Shares (diluted) 5.53B 1.39B 17.34M
Enterprise value -$40.00M $1.05B -$199.57M

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
MetricHYSRPLUGWPRT
P/E -16.9x -1.2x -0.9x
P/FCF -22.7x -3.5x -4.2x
P/Operating cash flow -22.7x -4.1x -4.7x
P/S 91,987x 2.6x 4.4x
P/B 3.6x 3.3x 0.7x
P/Tangible book 3.6x 3.5x 0.7x
EV/EBITDA -11.0x -1.4x -0.6x
EV/EBIT -11.0x -1.4x -0.6x
EV/Revenue 66,339x 2.4x 1.7x
EV/FCF -16.4x -3.2x -1.6x
EV/Operating cash flow -16.4x -3.7x -1.8x
PEG (3Y EPS CAGR) 0.17 -0.21 -0.12

Growth

14 metrics
MetricHYSRPLUGWPRT
Revenue growth (1Y) – 10.6% -73.4%
Revenue CAGR (3Y) – -5.4% -70.1%
Gross profit growth (1Y) – 70.1% -72.0%
Gross profit CAGR (3Y) – 20.4% -72.0%
Operating income growth (1Y) -29.3% 31.3% -71.1%
Operating income CAGR (3Y) 6.7% -15.4% -35.5%
Net income growth (1Y) 20.6% 13.3% 21.9%
Net income CAGR (3Y) -105.7% -26.9% 7.3%
EPS growth (1Y) 23.7% 32.5% 18.0%
EPS CAGR (3Y) -98.1% 5.5% 7.7%
Operating cash flow growth (1Y) -38.9% 20.0% 55.5%
Operating cash flow CAGR (3Y) -5.9% 22.8% 10.8%
Free cash flow growth (1Y) -38.9% 31.6% 55.5%
Free cash flow CAGR (3Y) -5.6% 30.6% 27.8%

Profitability

14 metrics
MetricHYSRPLUGWPRT
Gross margin – -18.5% 11.2%
EBITDA margin -600,651% -168.2% -267.3%
Operating margin -601,652% -172.8% -276.7%
Pretax margin -502,370% -229.0% -423.1%
Net margin -522,522% -220.6% -493.2%
FCF margin -405,229% -75.3% -103.9%
Operating cash flow margin -405,229% -64.9% -93.2%
Return on equity -19.4% -251.3% -29.3%
Return on assets -18.8% -75.0% -19.9%
Return on invested capital – -188.4% -39.8%
Return on capital employed -23.1% -72.0% -42.2%
Asset turnover 0.0x 0.3x 0.1x
Cash conversion (OCF / net income) 0.8x 0.3x 0.2x
Stock comp / revenue 93,359% 7.2% 8.2%

Financial Health

11 metrics
MetricHYSRPLUGWPRT
Debt / assets – 0.0% 1.1%
Debt / equity – 0.0x 0.0x
Net debt / EBITDA – 0.1x 1.0x
Debt / FCF – 0.0x -0.1x
Liabilities / assets 3.6% 73.2% 38.5%
Equity / assets 96.4% 26.8% 61.5%
Interest coverage – -17.9x -100.9x
Current ratio 37.9x 2.3x 1.1x
Quick ratio 37.6x 0.8x 1.1x
Cash ratio 37.2x 0.3x 0.8x
Altman Z-score 54.19 -6.06 -19.42

Shareholder Returns

7 metrics
MetricHYSRPLUGWPRT
Dividend yield – – –
Net buyback yield -0.1% -2.5% 295.0%
Shareholder yield -0.1% -2.5% 295.0%
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.

ConsensusHYSRPLUGWPRT
EPS, next fiscal year – $-0.41FY2026 $-1.37FY2026
Revenue, next fiscal year – $799.33MFY2026 $10.34MFY2026
Revenue growth, next FY – +12.6%FY2026 -55.7%FY2026
Revenue growth, the year after – +28.0% +10.1%

Institutional Ownership

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

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.

HYSRPLUGWPRT
HYSR 1.00 -0.10 0.02
PLUG -0.10 1.00 0.20
WPRT 0.02 0.20 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, HYSR, PLUG and WPRT?

Plug Power (PLUG) is the largest by market capitalisation: Sunhydrogen (HYSR) $94.62M, Plug Power (PLUG) $1.97B, Aetherion Technologies (WPRT) $37.53M.

Which company is growing faster?

Plug Power (PLUG) grew revenue fastest over the trailing twelve months: Plug Power (PLUG) +10.6%, Aetherion Technologies (WPRT) -73.4%.

Which company is more profitable?

Plug Power (PLUG) has the highest net margin (Sunhydrogen (HYSR) -522,521.9%, Plug Power (PLUG) -220.6%, Aetherion Technologies (WPRT) -493.2%). On return on invested capital, Aetherion Technologies (WPRT) leads (Plug Power (PLUG) -188.4%, Aetherion Technologies (WPRT) -39.8%).

Which stock has performed better?

Over the past year Aetherion Technologies (WPRT) returned the most: Sunhydrogen (HYSR) -33.3%, Plug Power (PLUG) -52.7%, Aetherion Technologies (WPRT) +7.5%. Over five years, Sunhydrogen (HYSR) compounded fastest (Sunhydrogen (HYSR) -13.0%/yr, Plug Power (PLUG) -48.1%/yr, Aetherion Technologies (WPRT) -41.4%/yr). Returns are price only, before dividends.

Which stock is riskier?

By one-year price volatility, Aetherion Technologies (WPRT) has been the steadiest (Sunhydrogen (HYSR) 141.6%, Plug Power (PLUG) 78.1%, Aetherion Technologies (WPRT) 53.3%). Volatility measures how widely the price swings, not the risk of the business.

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

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