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CLIR
ClearSign Technologies Corporation Common Stock (DE)
stockNASDAQ

Market OpenOct 20, 2026 11:25:45 AM EDT
2.52USD+7.692%(+0.18)7,915
2.0900Bid2.8300Ask0.7400Spread
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Industrials
Pollution & Treatment Controls
HQ
Tulsa, OK, USA
Previous Close
$2.34
Beta
0.96
52-Week High
$10.20 2025-10-28
52-Week Low
$2.12 2026-10-19
SMA 50
$3.82
SMA 200
$4.68
Avg. Vol 10D
23,374
Avg. Vol 30D
23,935
Avg. Vol 90D
17,371
Relative Vol
0.33
4.27M
0.6400%
247
Nov 13, 2026 (24d)
Mar 16, 2026 · 1-for-10 (reverse)
CLIR Profile

clearsign combustion corporation (nasdaq: clir) designs and develops technologies that aim to solve the greatest challenge facing the energy industry today: capital intensive emissions control requirements which reduce process throughput, consume energy, complicate design and destroy profits. our technologies offer simple retrofit strategies for superior emissions control and improved performance during combustion for a fraction of the cost of after-treatment methods which can only address part of the problem. our methods can be deployed anywhere there is an open flame, regardless of the fuel type. welcome to the future of fire. for more information about the company, please visit: www.clearsigncombustion.com.

CLIR Performance
PeriodPriceDateChangeBeta
1W2.882026-10-13-13.71%0.463
1M3.792026-09-21-34.43%1.121
3M3.372026-07-20-26.26%-0.122
6M5.412026-04-20-54.02%0.565
1Y9.502025-10-20-73.85%0.963
2Y8.362024-10-21-70.29%—
5Y18.602021-10-20-86.64%1.074
CLIR Stock Summary

ClearSign Technologies Corporation Common Stock (DE) (NASDAQ:CLIR) stock price today is $2.49, and today's volume is 7,915. CLIR is up 6.197% today. The 30 day average volume is 23,935. CLIR market cap is $16.92M with 6.81M shares outstanding.