Aspen Aerogels Inc (ASPN) stock
Close on Nov 12, 2026Market cap $497.10MP/E –Yield –
Aspen Aerogels Inc saw revenue fall 39.3% to $214.25M over the twelve months to Sep 30, 2026. Free cash flow was $19.95M, up 642.9% from a year earlier. At the latest close the market valued the company at $497.10M.
Key statistics
Valuation at the latest close; fundamentals over the trailing twelve months, balances at Sep 30, 2026
Valuation
- Market cap
- $497.10M
- P/E ratio
- –
- Price to sales
- 2.32
- Price to book
- 2.70
- Dividend yield
- –
- Free cash flow yield
- 4.01%
Fundamentals
- Revenue
- $214.25M
- Net income
- -$130.29M
- EPS, diluted
- -$1.58
- Free cash flow
- $19.95M
- Book value per share
- $2.22
- Diluted shares
- 83M
Trading
- Next earnings
- Feb 24, 2027 (estimated, before the open)
- Previous close
- $6.41
- Open
- $6.18
- Day's range
- $5.96 – $6.58
- Volume
- 1,647,289
- Average volume (20 days)
- 1,320,318
- Index membership
- Russell 2000 (since Jun 2020), Russell 3000 (since Aug 2020)
- Beta (5 years)
- 2.18
- 52-week range
- $2.30 – $8.10
- RSI (14 days)
- 56.8
- Volatility (1 year)
- 91.4%
- Relative volume
- 1.44×
- WACC
- 15.3%
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 2014, using shares outstanding reported at the time
Total return vs. the S&P 500
Price change plus reinvested dividends, to the close on Nov 12, 2026. The S&P 500 is measured by the SPY fund.
| Period | ASPN | S&P 500 | Difference | ASPN per year | S&P 500 per year |
|---|---|---|---|---|---|
| 1 month | +10.1% | -2.7% | +12.8 pts | ||
| 3 months | -2.6% | -1.7% | −0.9 pts | ||
| Year to date | +111.7% | +11.9% | +99.8 pts | ||
| 1 year | +74.6% | +12.0% | +62.6 pts | ||
| 3 years | -34.5% | +78.2% | −112.6 pts | -13.1% | +21.2% |
| 5 years | -89.9% | +73.2% | −163.1 pts | -36.8% | +11.6% |
| 10 years | +52.0% | +309.6% | −257.6 pts | +4.3% | +15.1% |
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 Aspen Aerogels filed with the SEC as exhibits to Form 8-K or 6-K
- Results
- Results
- Update
- Results
- Update
- Results
About Aspen Aerogels
Wholesale-Lumber & Other Construction Materials
Aspen Aerogels, Inc. designs, develops, and manufactures aerogel materials for electric vehicles, energy industrial facilities, and sustainable insulation applications. The company operates through two primary reporting segments: Thermal Barrier and Energy Industrial. Its Thermal Barrier division produces PyroThin aerogel barriers, which protect lithium-ion battery packs from thermal runaway propagation. Its Energy Industrial division supplies Pyrogel and Cryogel flexible aerogel blanket insulation to reduce heat transfer and mitigate corrosion under insulation. Aspen Aerogels serves electric vehicle manufacturers, energy storage producers, oil and gas companies, petrochemical processors, and operators of liquefied natural gas and power generation facilities, as well as transportation builders in aerospace, rail, and transit.
Company profile, executives and historyAspen Aerogels stock: common questions
What is Aspen Aerogels's stock price?
ASPN closed at $5.99 on Nov 12, 2026, down 6.55% on the day. Over the past 52 weeks it traded between $2.30 and $8.10.
What is Aspen Aerogels's market cap?
Aspen Aerogels was worth $497.10M at the close on Nov 12, 2026: the share price times the diluted shares outstanding.
What is ASPN's P/E ratio?
Aspen Aerogels lost money over the twelve months to Sep 30, 2026 (diluted EPS -$1.58), so it has no meaningful P/E ratio.
How much revenue does Aspen Aerogels make?
Aspen Aerogels reported revenue of $214.25M for the twelve months to Sep 30, 2026, down 39.3% from a year earlier.
Does Aspen Aerogels pay a dividend?
No. Aspen Aerogels has not paid a cash dividend over the last twelve months.
When does Aspen Aerogels report earnings next?
Aspen Aerogels is expected to report Q4 FY2026 results on Feb 24, 2027, before the open. The date is estimated from its past reporting pattern until the company confirms it.
How has ASPN stock performed over the past year?
Including dividends, ASPN returned +74.6% over the past year, against +12.0% for the S&P 500.
How many ASPN shares are sold short?
6M shares were sold short at the latest FINRA report, 9.29% of the float, or 7.2 days of average trading volume.
Who are Aspen Aerogels's competitors?
Companies most similar to Aspen Aerogels by business, industry and size include CAPS, RELL, AMSC, HDSN, SMJF.
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