Nasdaq · CLIR · stock
ClearSign Technologies Corp (CLIR) stock price history
Every Nasdaq trading session of ClearSign Technologies Corp from Apr 25, 2012 to Nov 12, 2026: 3,660 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.
CLIR adjusted close, 2012 to 2026
- $117.50
- All time high, 2014
- $9.80
- 52 week high, $2.12 low
- 3,660
- Daily sessions since 2012
Last updated Nov 12, 2026, the last stored session. Refreshes after each trading day. Full 2012 to 2026 series and minute bars.
CLIR key facts
- ClearSign Technologies Corp (CLIR) closed at $2.26 on Nov 12, 2026 on Nasdaq.
- CLIR's all time high close is $117.50, set on Jan 15, 2014; its all time low close is $2.26 on Nov 12, 2026.
- CLIR's 52 week range is $2.12 to $9.80.
- CLIR returned -72.8% over the year to Nov 12, 2026 and -87.7% over five years.
- Over ten years CLIR returned -95%, -25.3% a year compounded.
- CLIR's deepest drawdown was -98.1% from Jan 15, 2014 to Nov 12, 2026.
- DataCedar holds 3,660 daily sessions of CLIR history from Apr 25, 2012 and minute bars from Jul 13, 2026, adjusted for splits and dividends, served by the API under a key.
CLIR price chart, 2012 to 2026
CLIR returns
Price return from the last close on or before the window start to Nov 12, 2026, on adjusted closes.
| Period | Return |
|---|---|
| 1 month | -23.6% |
| 3 months | -45.3% |
| 6 months | -50.3% |
| Year to date | -59.6% |
| 1 year | -72.8% |
| 3 years | -73.7% |
| 5 years | -87.7% |
| 10 years | -94.6% |
| Since Apr 25, 2012 | -94.6% |
| Compound annual growth, 14.5 years | -18.2% |
CLIR records
Measured on the stored closes; every figure is reproducible from the API series.
- All time high close
- $117.50 on Jan 15, 2014
- All time low close
- $2.26 on Nov 12, 2026
- 52 week high
- $9.80 on Nov 14, 2025
- 52 week low
- $2.12 on Oct 19, 2026
- Deepest drawdown
- -98.1% from Jan 15, 2014 to Nov 12, 2026, not yet recovered
- Best single session
- +200.0% on Jun 16, 2020
- Worst single session
- -26.9% on Sep 3, 2021
- Volatility, 1 year annualised
- 91.4%
- Sessions closing higher, 1 year
- 37%
- Best calendar year
- 2020, +286%
- Worst calendar year
- 2018, -72%
CLIR 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. 2012 starts on Apr 25, 2012; 2026 runs to Nov 12, 2026.
| Year | Open | High | Low | Close | Return | Volume | Sessions |
|---|---|---|---|---|---|---|---|
| 2026 | $5.60 | $8.10 | $2.12 | $2.26 | -59.6% | 4.7M | 218 |
| 2025 | $15.00 | $16.00 | $4.60 | $5.60 | -61.1% | 6.8M | 250 |
| 2024 | $11.20 | $17.20 | $6.20 | $14.40 | +29.7% | 2.2M | 252 |
| 2023 | $5.50 | $17.50 | $5.00 | $11.10 | +105.6% | 1.5M | 250 |
| 2022 | $13.80 | $17.80 | $5.00 | $5.40 | -60.9% | 1.5M | 251 |
| 2021 | $29.50 | $60.00 | $11.90 | $13.80 | -52.9% | 6.2M | 252 |
| 2020 | $7.30 | $41.10 | $3.50 | $29.30 | +285.5% | 35.1M | 253 |
| 2019 | $10.10 | $15.00 | $7.10 | $7.60 | -25.5% | 1.8M | 252 |
| 2018 | $35.50 | $36.00 | $7.70 | $10.20 | -71.7% | 3.2M | 251 |
| 2017 | $34.00 | $47.00 | $17.50 | $36.00 | +5.9% | 2.8M | 251 |
| 2016 | $47.60 | $62.40 | $26.80 | $34.00 | -29.9% | 1.3M | 252 |
| 2015 | $73.30 | $80.90 | $32.20 | $48.50 | -33.8% | 1.8M | 252 |
| 2014 | $113.50 | $138.70 | $50.70 | $73.30 | -36.0% | 1.7M | 252 |
| 2013 | $49.60 | $124.90 | $41.20 | $114.50 | +136.6% | 2M | 252 |
| 2012 | $41.10 | $97.50 | $40.00 | $48.40 | n/a | 653.1K | 172 |
CLIR monthly closes, last 12 months
| Month | Month end close | Change |
|---|---|---|
| November 2026 | $2.26 | -2.2% |
| October 2026 | $2.31 | -34.9% |
| September 2026 | $3.55 | -16.7% |
| August 2026 | $4.26 | +10.4% |
| July 2026 | $3.86 | +5.2% |
| June 2026 | $3.67 | -20.7% |
| May 2026 | $4.63 | -7.4% |
| April 2026 | $5.00 | +14.7% |
| March 2026 | $4.36 | -22.1% |
| February 2026 | $5.60 | -6.7% |
| January 2026 | $6.00 | +7.1% |
| December 2025 | $5.60 | -24.3% |
About the CLIR data
Daily bars. 3,660 sessions from Apr 25, 2012 to Nov 12, 2026, one row per Nasdaq 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 Oct 23, 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 Nasdaq 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 Apr 25, 2012, 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/nasdaq%3ACLIR/bars?timeframe=1Day&adjustment=all&limit=50000" \
-H "X-API-Key: YOUR_KEY"Nearby on Nasdaq
Common questions
CLIR share price history
