ClearSign Technologies (CLIR)

• Market cap: $31.5M
• 1 day: 2.75%
• 5 days: 8.70%
• 1 month: -4.59%
• 3 months: 5.46%
• 6 months: -27.39%
• Year to date: -56.76%
• 1 year: -21.94%
• 5 years: -74.42%
• 10 years: -87.02%
• Sector: Industrials
• Industry: Pollution & Treatment Controls

About: ClearSign Technologies Corp is engaged in providing solutions to some of the pressing productivity, energy efficiency, and pollution problems affecting the energy, oil, and gas production, boiler, and processing industries. It believes that its patented ClearSign Core technology can enhance the performance of combustion systems in a broad range of markets, including the energy (upstream oil production and downstream refining), institutional, commercial, and industrial boiler, chemical, and petrochemical industries. The company offers products that include process burners, boiler burners, flares, and ClearSign Eye.

Employees: 18

Fund manager confidence

Based on 2025 Q2 regulatory disclosures by fund managers ($100M+ AUM)

150% more repeat investments, than reductions

Existing positions increased: 10 | Existing positions reduced: 4

0.29% more ownership

Funds ownership: 8.17% [Q1] → 8.46% (+0.29%) [Q2]

5% less funds holding

Funds holding: 38 [Q1] → 36 (-2) [Q2]

14% less first-time investments, than exits

New positions opened: 6 | Existing positions closed: 7

21% less capital invested

Capital invested by funds: $3.07M [Q1] → $2.41M (-$659K) [Q2]