ClearSign Technologies Corporation (CLIR) Stock Price History
Historical prices from 2012 to 2026
- 1M
- -12.5%
- 3M
- +3.5%
- YTD
- -32.3%
- 1Y
- -36.6%
- 3Y
- -35.1%
- 5Y
- -39.1%
Loading 10-year price history...
CLIR Historical Performance
CLIR Annual Returns
Year-by-year price performance · 2012–2026
- 2012 annual price return
- +15.2%
- 2013 annual price return
- +129.0%
- 2014 annual price return
- -30.7%
- 2015 annual price return
- -33.0%
- 2016 annual price return
- -30.6%
- 2017 annual price return
- +5.9%
- 2018 annual price return
- -70.9%
- 2019 annual price return
- -24.0%
- 2020 annual price return
- +253.0%
- 2021 annual price return
- -52.1%
- 2022 annual price return
- -62.5%
- 2023 annual price return
- +109.4%
- 2024 annual price return
- +34.6%
- 2025 annual price return
- -59.7%
- 2026 annual price return
- -1.5%
CLIR Stock Price Trajectory (2012–2026)
As of June 22, 2026, ClearSign Technologies Corporation (CLIR) trades at $3.86, representing a -36.6% return over the past year. The stock has delivered a -91.6% total return over five years (-39.1% CAGR), reflecting challenging market conditions.
The stock reached its all-time high of $138.70 on January 16, 2014. From this peak, CLIR has corrected -97.2%, currently trading 38% below its 200-day moving average, suggesting potential weakness.
When compared to Industrials sector peers FTEK (-21.0% 1Y), PESI (+8.9% 1Y), and CECO (+235.1% 1Y), CLIR has underperformed the peer group average. Compare CLIR vs FTEK →
CLIR Historical Price Data · from 2012
Rows 1–50 of 3,559| Date | Open | High | Low | Close | Volume | Change % |
|---|---|---|---|---|---|---|
| 2026-06-18 | 3.87 | 4.10 | 3.80 | 3.86 | 29K | -4.69% |
| 2026-06-17 | 4.12 | 4.14 | 4.03 | 4.05 | 13K | -1.70% |
| 2026-06-16 | 4.11 | 4.33 | 4.07 | 4.12 | 26K | -0.36% |
| 2026-06-15 | 4.28 | 4.28 | 4.08 | 4.13 | 13K | +1.35% |
| 2026-06-12 | 4.17 | 4.19 | 4.08 | 4.08 | 9K | -4.00% |
| 2026-06-11 | 4.32 | 4.32 | 4.10 | 4.25 | 16K | +1.43% |
| 2026-06-10 | 4.32 | 4.34 | 4.07 | 4.19 | 18K | +0.72% |
| 2026-06-09 | 4.36 | 4.42 | 4.07 | 4.16 | 23K | +0.24% |
| 2026-06-08 | 3.93 | 4.25 | 3.93 | 4.15 | 20K | +2.47% |
| 2026-06-05 | 4.39 | 4.39 | 3.87 | 4.05 | 9K | -5.37% |
| 2026-06-04 | 4.32 | 4.47 | 4.28 | 4.28 | 17K | -2.28% |
| 2026-06-03 | 4.40 | 4.47 | 4.38 | 4.38 | 11K | -1.75% |
| 2026-06-02 | 4.38 | 4.54 | 4.36 | 4.46 | 10K | -0.27% |
| 2026-06-01 | 4.55 | 4.63 | 3.73 | 4.47 | 8K | -3.46% |
| 2026-05-29 | 4.39 | 4.70 | 4.27 | 4.63 | 58K | +1.54% |
| 2026-05-28 | 4.45 | 4.75 | 4.41 | 4.56 | 26K | +2.47% |
| 2026-05-27 | 4.40 | 4.65 | 4.40 | 4.45 | 14K | -3.89% |
| 2026-05-26 | 4.78 | 4.84 | 4.60 | 4.63 | 51K | -4.54% |
| 2026-05-22 | 4.74 | 4.89 | 4.62 | 4.85 | 18K | +1.68% |
| 2026-05-21 | 4.73 | 5.09 | 4.59 | 4.77 | 8K | -2.65% |
| 2026-05-20 | 4.61 | 5.03 | 4.51 | 4.90 | 17K | +6.52% |
| 2026-05-19 | 4.47 | 4.65 | 4.47 | 4.60 | 6K | +4.31% |
| 2026-05-18 | 4.71 | 4.82 | 4.41 | 4.41 | 25K | -6.37% |
| 2026-05-15 | 4.86 | 5.07 | 4.62 | 4.71 | 22K | -9.51% |
| 2026-05-14 | 4.61 | 5.56 | 4.57 | 5.21 | 29K | +16.97% |
| 2026-05-13 | 4.41 | 4.74 | 4.35 | 4.45 | 16K | -2.20% |
| 2026-05-12 | 4.45 | 4.75 | 4.45 | 4.55 | 17K | +4.24% |
| 2026-05-11 | 4.61 | 4.61 | 4.20 | 4.36 | 22K | -3.86% |
| 2026-05-08 | 4.45 | 4.58 | 4.21 | 4.54 | 26K | -6.00% |
| 2026-05-07 | 4.97 | 4.97 | 4.69 | 4.83 | 16K | -1.63% |
| 2026-05-06 | 4.97 | 4.99 | 4.80 | 4.91 | 15K | 0.00% |
| 2026-05-05 | 4.94 | 4.99 | 4.88 | 4.91 | 5K | -2.96% |
| 2026-05-04 | 5.14 | 5.14 | 4.57 | 5.06 | 16K | -1.17% |
| 2026-05-01 | 5.05 | 5.22 | 5.01 | 5.12 | 14K | +2.40% |
| 2026-04-30 | 5.33 | 5.33 | 5.00 | 5.00 | 9K | -6.89% |
| 2026-04-29 | 5.33 | 5.56 | 5.33 | 5.37 | 3K | +0.75% |
| 2026-04-28 | 5.44 | 5.51 | 5.32 | 5.33 | 9K | +1.91% |
| 2026-04-27 | 5.14 | 5.33 | 4.73 | 5.23 | 15K | +4.60% |
| 2026-04-24 | 5.08 | 5.13 | 5.00 | 5.00 | 6K | -3.10% |
| 2026-04-23 | 5.48 | 5.50 | 5.06 | 5.16 | 15K | -7.69% |
| 2026-04-22 | 5.48 | 5.80 | 5.48 | 5.59 | 13K | +3.52% |
| 2026-04-21 | 5.44 | 5.53 | 5.21 | 5.40 | 12K | +1.12% |
| 2026-04-20 | 5.56 | 5.66 | 5.19 | 5.34 | 56K | -2.02% |
| 2026-04-17 | 5.33 | 5.68 | 5.33 | 5.45 | 21K | +4.41% |
| 2026-04-16 | 5.90 | 6.14 | 5.22 | 5.22 | 17K | -10.62% |
| 2026-04-15 | 5.60 | 5.96 | 5.60 | 5.84 | 17K | +8.55% |
| 2026-04-14 | 5.47 | 5.60 | 5.26 | 5.38 | 19K | -0.19% |
| 2026-04-13 | 5.29 | 5.39 | 4.93 | 5.39 | 48K | +1.89% |
| 2026-04-10 | 6.28 | 6.59 | 4.73 | 5.29 | 133K | -14.40% |
| 2026-04-09 | 6.30 | 6.87 | 5.99 | 6.18 | 58K | -4.48% |
Intrinsic Valuation
DCF models, multiple analysis, and analyst estimates.
Historical Returns
10-year return with dividends reinvested.
DCA Calculator
See how regular investing compounds over time.
Peer Comparison
Compare growth, multiples, and margins vs sector.
CLIR — Frequently Asked Questions
Quick answers to the most common questions about buying CLIR stock.
How has CLIR stock performed recently?
CLIR declined -36.6% over the past year, below its 5-year annualized CAGR of -39.1%. The stock trades below its 200-day moving average, reflecting the downtrend.
What is CLIR's all-time high price?
ClearSign Technologies Corporation reached $138.70 on 2014-01-16. The 52-week high is $11.20. Current 1-year return of -36.6% places the stock further from historical peaks.
Where can I download CLIR historical price data?
This page provides CLIR daily OHLCV data with 50-day MA, 200-day MA, and RSI indicators. Data spans 2012-2026, downloadable in CSV format.