Plug Power Inc (PLUG) stock
Close on Nov 11, 2026Market cap $1.89BP/E –Yield –
Plug Power Inc grew revenue 13.5% to $767.63M over the twelve months to Sep 30, 2026. Free cash flow was -$485.54M. At the latest close the market valued the company at $1.89B.
Key statistics
Valuation at the latest close; fundamentals over the trailing twelve months, balances at Sep 30, 2026
Valuation
- Market cap
- $1.89B
- P/E ratio
- –
- Price to sales
- 2.47
- Price to book
- 2.68
- Dividend yield
- –
- Free cash flow yield
- -25.65%
Fundamentals
- Revenue
- $767.63M
- Net income
- -$1.18B
- EPS, diluted
- -$0.95
- Free cash flow
- -$485.54M
- Book value per share
- $0.46
- Diluted shares
- 1.54B
Trading
- Next earnings
- Mar 1, 2027 (estimated, after the close)
- Previous close
- $1.36
- Open
- $1.39
- Day's range
- $1.35 – $1.40
- Volume
- 25,613,170
- Average volume (20 days)
- 54,918,454
- Index membership
- Russell 2000 (since Sep 2024), Russell 3000
- Beta (5 years)
- 1.85
- 52-week range
- $1.30 – $4.33
- RSI (14 days)
- 39.2
- Volatility (1 year)
- 79.7%
- Relative volume
- 0.47×
- WACC
- 14.1%
On 1 of our idea list: Most shorted (a warning list)
Index membership is inferred from the holdings of funds that track each index (IWM, IWV), as reported to the SEC for Jun 30, 2026. Join dates come from quarterly fund reports since 2019, so they are accurate to the quarter.
Market cap history
Month-end market cap since 2012, using shares outstanding reported at the time
Total return vs. the S&P 500
Price change plus reinvested dividends, to the close on Nov 11, 2026. The S&P 500 is measured by the SPY fund.
| Period | PLUG | S&P 500 | Difference | PLUG per year | S&P 500 per year |
|---|---|---|---|---|---|
| 1 month | -19.3% | -2.4% | −16.9 pts | ||
| 3 months | -39.0% | -1.2% | −37.8 pts | ||
| Year to date | -31.2% | +12.3% | −43.5 pts | ||
| 1 year | -46.4% | +12.4% | −58.9 pts | ||
| 3 years | -61.6% | +78.8% | −140.4 pts | -27.3% | +21.4% |
| 5 years | -96.9% | +75.2% | −172.0 pts | -50.0% | +11.9% |
| 10 years | -7.8% | +311.1% | −318.9 pts | -0.8% | +15.2% |
Fifteen years at a glance
Fiscal years 2011 to 2025 and trailing twelve months, USD
Revenue
Gross profit
Operating income
Net income
EPS, diluted
Free cash flow
Press releases
Releases Plug Power filed with the SEC as exhibits to Form 8-K or 6-K
- Results
- Results
- Results
- Results
- Update
- Results
About Plug Power
Electrical Industrial Apparatus
Plug Power Inc. provides end-to-end clean hydrogen solutions spanning energy production, storage, distribution, and electricity generation. Operating as a single reportable business segment, the company develops and sells proton exchange membrane electrolyzers, stationary and motive fuel cell systems, hydrogen liquefiers, and specialized cryogenic delivery and storage equipment. Its commercial offerings also encompass liquid hydrogen supply, turnkey infrastructure setups, and ongoing maintenance programs. Plug primarily caters to customers operating large-scale manufacturing facilities and high-volume distribution centers, particularly within the material handling and industrial mobility sectors. Additionally, its electrolyzers and hydrogen products serve refineries, chemical plants, steel producers, utilities, and commercial refueling stations.
Company profile, executives and historyPlug Power stock: common questions
What is Plug Power's stock price?
PLUG closed at $1.35 on Nov 11, 2026, down 0.73% on the day. Over the past 52 weeks it traded between $1.30 and $4.33.
What is Plug Power's market cap?
Plug Power was worth $1.89B at the close on Nov 11, 2026: the share price times the diluted shares outstanding.
What is PLUG's P/E ratio?
Plug Power lost money over the twelve months to Sep 30, 2026 (diluted EPS -$0.95), so it has no meaningful P/E ratio.
How much revenue does Plug Power make?
Plug Power reported revenue of $767.63M for the twelve months to Sep 30, 2026, up 13.5% from a year earlier.
Does Plug Power pay a dividend?
No. Plug Power has not paid a cash dividend over the last twelve months.
When does Plug Power report earnings next?
Plug Power is expected to report Q4 FY2026 results on Mar 1, 2027, after the close. The date is estimated from its past reporting pattern until the company confirms it.
How has PLUG stock performed over the past year?
Including dividends, PLUG returned -46.4% over the past year, against +12.4% for the S&P 500.
How many PLUG shares are sold short?
281M shares were sold short at the latest FINRA report, 21.07% of the float, or 6.2 days of average trading volume.
Who are Plug Power's competitors?
Companies most similar to Plug Power by business, industry and size include FCEL, BE, EAF, FPS, WWD.
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