NYSE · ASPN · stock
Aspen Aerogels INC (ASPN) stock price history
Every NYSE trading session of Aspen Aerogels INC from Jun 13, 2014 to Sep 28, 2026: 3,091 daily bars, adjusted for splits and dividends, with minute bars from Jul 13, 2026 forward. The full series is served by the API: a free key covers the last year, paid plans the whole history and minute bars.
ASPN adjusted close, 2014 to 2026
- $63.66
- All time high, 2021
- $9.35
- 52 week high, $2.30 low
- 3,091
- Daily sessions since 2014
Last updated Sep 28, 2026, the last stored session. Refreshes after each trading day. Full 2014 to 2026 series and minute bars.
ASPN key facts
- Aspen Aerogels INC (ASPN) closed at $5.17 on Sep 28, 2026 on NYSE.
- ASPN's all time high close is $63.66, set on Nov 18, 2021; its all time low close is $1.61 on Dec 26, 2018.
- ASPN's 52 week range is $2.30 to $9.35.
- ASPN returned -27.2% over the year to Sep 28, 2026 and -88.5% over five years.
- Over ten years ASPN returned -14%, -1.5% a year compounded.
- ASPN's deepest drawdown was -96.0% from Nov 18, 2021 to Feb 25, 2026.
- DataCedar holds 3,091 daily sessions of ASPN history from Jun 13, 2014 and minute bars from Jul 13, 2026, adjusted for splits and dividends, served by the API under a key.
ASPN price chart, 2014 to 2026
ASPN returns
Price return from the last close on or before the window start to Sep 28, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | +4.9% |
| 3 months | -8.2% |
| 6 months | +56.7% |
| Year to date | +75.3% |
| 1 year | -27.2% |
| 3 years | -37.9% |
| 5 years | -88.5% |
| 10 years | -14.3% |
| Since Jun 13, 2014 | -51.9% |
| Compound annual growth, 12.3 years | -5.8% |
ASPN records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- $63.66 on Nov 18, 2021
- All time low close
- $1.61 on Dec 26, 2018
- 52 week high
- $9.35 on Oct 16, 2025
- 52 week low
- $2.30 on Feb 25, 2026
- Deepest drawdown
- -96.0% from Nov 18, 2021 to Feb 25, 2026, not yet recovered
- Best single session
- +56.7% on May 2, 2024
- Worst single session
- -44.5% on Nov 6, 2025
- Volatility, 1 year annualised
- 105.5%
- Sessions closing higher, 1 year
- 48%
- Best calendar year
- 2019, +264%
- Worst calendar year
- 2022, -76%
ASPN price history by year
Open is the first session's open, high and low span the year, close is the last session's close, and the return is close over the previous year's close. 2014 starts on Jun 13, 2014; 2026 runs to Sep 28, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | $2.86 | $8.10 | $2.30 | $5.17 | +82.7% | 271.7M | 185 |
| 2025 | $12.29 | $14.30 | $2.80 | $2.83 | -76.2% | 523M | 250 |
| 2024 | $15.43 | $33.15 | $10.75 | $11.88 | -24.7% | 410.3M | 252 |
| 2023 | $12.06 | $17.32 | $5.32 | $15.78 | +33.8% | 232.8M | 250 |
| 2022 | $51.20 | $52.00 | $7.93 | $11.79 | -76.3% | 178.3M | 251 |
| 2021 | $16.90 | $65.99 | $15.21 | $49.79 | +198.3% | 62.6M | 252 |
| 2020 | $7.76 | $18.22 | $4.09 | $16.69 | +115.1% | 40.6M | 253 |
| 2019 | $2.13 | $8.51 | $2.13 | $7.76 | +264.3% | 13.5M | 252 |
| 2018 | $4.93 | $5.58 | $1.60 | $2.13 | -56.4% | 12.3M | 251 |
| 2017 | $4.20 | $5.14 | $3.84 | $4.88 | +18.2% | 13.6M | 251 |
| 2016 | $6.03 | $6.71 | $3.38 | $4.13 | -32.0% | 18.9M | 252 |
| 2015 | $7.90 | $9.03 | $5.24 | $6.07 | -23.9% | 17.7M | 252 |
| 2014 | $11.00 | $11.74 | $6.46 | $7.98 | n/a | 11M | 140 |
ASPN monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| September 2026 | $5.17 | +4.9% |
| August 2026 | $4.93 | +6.5% |
| July 2026 | $4.63 | -27.0% |
| June 2026 | $6.34 | -0.9% |
| May 2026 | $6.40 | +72.5% |
| April 2026 | $3.71 | +8.5% |
| March 2026 | $3.42 | +9.6% |
| February 2026 | $3.12 | -7.4% |
| January 2026 | $3.37 | +19.1% |
| December 2025 | $2.83 | -12.1% |
| November 2025 | $3.22 | -60.4% |
| October 2025 | $8.14 | +17.0% |
About the ASPN data
Daily bars. 3,091 sessions from Jun 13, 2014 to Sep 28, 2026, one row per NYSE trading day with open, high, low, close and volume. Prices are adjusted for splits and cash dividends so the series is comparable across its whole length; the API also serves the raw, split only and dividend only views.
Minute bars. Stored from Jul 13, 2026 forward, most recent session Sep 28, 2026. Minute history is captured from the day collection began and is never backfilled, so this start date is exact. Five minute, fifteen minute and hourly bars are derived from these minutes.
Time and currency. Session dates are NYSE trading days; minute timestamps are UTC. Prices are in USD. Volume is shares traded on the session.
Get the data. The REST endpoint returns the daily series as JSON with pagination; a free key serves the last year, Quant and above the full history back to Jun 13, 2014, and minute bars come with the paid windows. It takes timeframe (1Min, 5Min, 15Min, 1Hour, 1Day), adjustment, start and end. See the bars endpoint and authentication, and pricing for the plan windows.
curl "https://api.datacedar.com/v3/stocks/ASPN/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on NYSE
- ASGI.V abrdn Global Infrastructure Income Fund Rights (expiring October 15, 2026) Rights when issued
- ASH Ashland INC.
- ASIC Ategrity Specialty Insurance Co Holdings
- ASIX AdvanSix Inc.
- ASR Southeast Airport Group
- ASX ASE Technology Holding Co., Ltd.
- ATEN A10 Networks, Inc.
- ATH$A Athene Holding Ltd. Depositary Shares, Each Representing a 1/1,000th Interest in a 6.35% Fixed-to-Floating Rate Perpetual Non-Cumulative Preference Share, Series A
Common questions
ASPN share price history
