NASDAQ · CLIR
ClearSign Technologies Corporation
Industrials · Industrial - Pollution & Treatment Controls
$4.31
Up+$0.04 (+0.93%)
Updated Sep 9, 2026, 2:25 PM
SID Score
5.9/10
Composite research score
Smart Money
—
Institutional and insider signal
- Market cap
- 31.37M
- P/E ratio
- -5.17
- Dividend yield
- 0.00%
- 52-week range
- $0.52 – $7.56
- Volume
- 19.51K
- Avg. volume
- 819.03K
Price performance
CLIR price history
1M range · 20 trading sessions · Daily adjusted prices
CLIR closed at $4.31 after 20 trading sessions, up 3.36% for the selected period.
- Last close
- $4.31
- Period change
- +3.36%
- Period low
- $3.91
- Period high
- $4.84
View OHLC price history
| Date | Open | High | Low | Close | Volume |
|---|---|---|---|---|---|
| Sep 8, 2026 | $4.00 | $4.72 | $4.00 | $4.31 | 19.51K |
| Sep 4, 2026 | $3.98 | $4.145 | $3.895 | $3.91 | 9.24K |
| Sep 3, 2026 | $4.2701 | $4.3229 | $3.95 | $4.098 | 42.24K |
| Sep 2, 2026 | $4.22 | $4.445 | $4.10 | $4.25 | 10.72K |
| Sep 1, 2026 | $4.20 | $4.20 | $4.15 | $4.15 | 1.61K |
| Aug 31, 2026 | $4.35 | $4.36 | $4.215 | $4.26 | 4.95K |
| Aug 28, 2026 | $4.58 | $4.745 | $4.465 | $4.465 | 4.94K |
| Aug 27, 2026 | $4.70 | $4.81 | $4.5001 | $4.53 | 7.1K |
| Aug 26, 2026 | $4.6654 | $4.80 | $4.57 | $4.66 | 8.6K |
| Aug 25, 2026 | $4.88 | $4.936 | $4.6143 | $4.70 | 29.29K |
| Aug 24, 2026 | $4.43 | $4.8899 | $4.345 | $4.84 | 30.21K |
| Aug 21, 2026 | $4.20 | $4.56 | $4.092 | $4.4787 | 23.07K |
| Aug 20, 2026 | $4.53 | $4.9599 | $3.86 | $4.685 | 31.79K |
| Aug 19, 2026 | $4.71 | $4.77 | $4.2916 | $4.40 | 22.77K |
| Aug 18, 2026 | $4.69 | $4.85 | $4.40 | $4.67 | 13.81K |
| Aug 17, 2026 | $4.67 | $5.00 | $4.31 | $4.56 | 20.93K |
| Aug 14, 2026 | $4.10 | $4.70 | $4.10 | $4.65 | 27.23K |
| Aug 13, 2026 | $4.1101 | $4.25 | $4.1101 | $4.25 | 3.54K |
| Aug 12, 2026 | $4.0614 | $4.1999 | $4.0614 | $4.1342 | 2.7K |
| Aug 11, 2026 | $3.95 | $4.17 | $3.86 | $4.17 | 25.85K |
Latest CLIR news
The latest Smart Investors Daily articles mentioning CLIR.

