ClearSign Technologies Corp
CLIR- Exchange
- Nasdaq
- Industry
- Industrial Instruments For Measurement, Display, and Control
- SEC CIK
- 0001434524
In the last 90 days, ClearSign Technologies Corp insiders filed 1 open-market purchase and 0 sales; 24 institutions reported holding it in 13F filings for Q2 2026, worth $1.71M in total; no superinvestor holds it.
13F holders, Q2 2026
Institutional positions in ClearSign Technologies Corp as of Jun 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 24
- +4 vs. Q1 2026
- Shares held
- 466.1K
- +67.6K (+17.0%) vs. Q1 2026
- Total value
- $1.71M
- −$25.2K (−1.4%) vs. Q1 2026
- New holders
- 5
- 4 more added
- Sold out
- 1
- 1 more reduced
Compare with Q1 2026: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting CLIR on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 24 | $1.71M |
| Q1 2026 | 20 | $1.74M |
| Q4 2025 | 38 | $2.48M |
| Q3 2025 | 39 | $3.27M |
| Q2 2025 | 37 | $2.47M |
| Q1 2025 | 38 | $3.07M |
| Q4 2024 | 31 | $4.84M |
| Q3 2024 | 27 | $2.68M |
| Q2 2024 | 29 | $2.64M |
| Q1 2024 | 27 | $2.81M |
| Q4 2023 | 26 | $3.07M |
| Q3 2023 | 28 | $3.03M |
| Q2 2023 | 27 | $3.47M |
| Q1 2023 | 26 | $2.00M |
| Q4 2022 | 29 | $1.37M |
| Q3 2022 | 27 | $2.44M |
| Q2 2022 | 27 | $3.14M |
| Q1 2022 | 26 | $4.31M |
| Q4 2021 | 27 | $3.80M |
| Q3 2021 | 34 | $5.53M |
| Q2 2021 | 43 | $14.3M |
| Q1 2021 | 35 | $16.0M |
Institutions, Q2 2026
Shares, value and share of portfolio for each institution holding ClearSign Technologies Corp; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Vanguard Capital Management LLC | 105,429 | $386.9K | 0.00% | 00.0% | Unchanged |
| Cambridge Investment Research Advisors, Inc. | 88,600 | $326.0K | 0.00% | +44,300+100.0% | Added |
| Simon Quick Advisors, LLC | 60,314 | $221.4K | 0.01% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 51,457 | $188.9K | 0.00% | −6,226−10.8% | Reduced |
| Beacon Pointe Advisors, LLC | 27,173 | $99.7K | 0.00% | 00.0% | Unchanged |
| Vanguard Fiduciary Trust Co | 23,460 | $86.1K | 0.00% | 00.0% | Unchanged |
| HighTower Advisors, LLC | 22,662 | $83.2K | 0.00% | +9,982+78.7% | Added |
| Citadel Advisors LLC | 20,565 | $75.5K | 0.00% | +20,565 | New |
| BlackRock, Inc. | 19,503 | $71.6K | 0.00% | 00.0% | Unchanged |
| DDD Partners, LLC | 12,000 | $44.0K | 0.00% | 00.0% | Unchanged |
| Northern Trust Corp | 10,080 | $37.0K | 0.00% | +10,080 | New |
| Rockefeller Capital Management L.P. | 8,120 | $29.8K | 0.00% | 00.0% | Unchanged |
| Northwestern Mutual Wealth Management Co | 7,172 | $26.3K | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 2,125 | $7.80K | 0.00% | 00.0% | Unchanged |
| Gleason Group, Inc. | 1,802 | $6.61K | 0.00% | 00.0% | Unchanged |
| Centerpoint Advisors, LLC | 1,560 | $6.00K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 1,518 | $5.57K | 0.00% | +473+45.3% | Added |
| Vanguard Global Advisers, LLC | 1,350 | $4.96K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 684 | $3.00K | 0.00% | +684 | New |
| Deutsche Bank AG | 400 | $1.47K | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 100 | $367 | 0.00% | +100 | New |
| Barclays PLC | 33 | $121 | 0.00% | +33 | New |
| SBI Securities Co., Ltd. | 12 | $44 | 0.00% | +1+9.1% | Added |
| Group One Trading, L.P. | 9 | $33 | 0.00% | 00.0% | Unchanged |
| Creative Planning | 0 | $0 | 0.00% | −12,355−100.0% | Sold out |