Clearsign TechnologiesCLIR
13F holders, Q2 2025 (June 30)At the end of Q2 2025, 37 institutions reported holding Clearsign Technologies Corp. (CLIR) in their 13F filings, down 1 from Q1 2025. 6 opened new positions and 7 sold out. The largest holders were Vanguard Group Inc. ($623K), Simon Quick Advisors, LLC ($338K) and Geode Capital Management, LLC ($296K). 2 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Clearsign Technologies Corp.
- CUSIP
- 185064102
- Latest filing quarter
- Q4 2025
History
Number of 13F holders
Total Exit/New Position Q1 2025 → Q2 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 6 | $195K |
| Exits | 7 | $45K |
All 13F filers, Q1 2025 → Q2 2025: 523,713 shares bought and 90,618 shares sold, net +433,095 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 37 holders
| Vanguard Group Inc. | 0.00% | Add +3.1% | 1,165,417 | $623K |
| Simon Quick Advisors, LLC | 0.02% | No change | 603,149 | $338K |
| Geode Capital Management, LLC | 0.00% | Add +0.8% | 553,675 | $296K |
| Cambridge Investment Research Advisors, Inc. | 0.00% | Reduce -2.2% | 443,000 | $248K |
| Beacon Pointe Advisors, LLC | 0.00% | New | 271,739 | $145K |
| BlackRock, Inc. | 0.00% | No change | 199,304 | $112K |
| Creative Planning | 0.00% | No change | 141,853 | $76K |
| HighTower Advisors, LLC | 0.00% | Add +1.6% | 128,809 | $69K |
| DDD Partners, LLC | 0.01% | No change | 115,000 | $62K |
| Susquehanna International Group, LLP | 0.00% | Add +46.9% | 104,097 | $56K |
| State Street Corp. | 0.00% | No change | 88,989 | $48K |
| Northern Trust Corp. | 0.00% | No change | 75,466 | $42K |
| Northwestern Mutual Wealth Management Co. | 0.00% | Add +895.3% | 71,730 | $40K |
| Renaissance Technologies | 0.00% | Reduce -22.7% | 58,000 | $32K |
| Disciplined Investments, LLC | 0.01% | Add +18.5% | 55,886 | $30K |
| Raymond James Financial Inc. | 0.00% | No change | 51,832 | $29K |
| Citadel Advisors | 0.00% | Add +10.6% | 44,316 | $24K |
| Integrity Alliance, Llc. | 0.00% | Add +2.0% | 40,324 | $22K |
| Prevail Innovative Wealth Advisors, LLC | 0.00% | No change | 38,306 | $20K |
| Highland Capital Management, LLC | 0.00% | No change | 32,454 | $18K |
| Two Sigma Securities, LLC | 0.00% | New | 30,306 | $17K |
| Americana Partners, LLC | 0.00% | No change | 30,000 | $16K |
| Chicago Partners Investment Group LLC | 0.00% | No change | 28,000 | $16K |
| Charles Schwab Investment Management Inc. | 0.00% | No change | 25,555 | $14K |
| Wells Fargo & Company | 0.00% | No change | 21,050 | $12K |
| Cetera Investment Advisers | 0.00% | New | 20,706 | $12K |
| HRT Financial LP | 0.00% | New | 22,135 | $11K |
| Diversified Portfolios, Inc. | 0.00% | Add +53.9% | 20,000 | $11K |
| Gleason Group, Inc. | 0.00% | New | 18,018 | $10K |
| UBS Group AG | 0.00% | Reduce -14.7% | 16,092 | $9K |
| Centerpoint Advisors, LLC | 0.00% | No change | 15,700 | $9K |
| Deutsche Bank AG | 0.00% | No change | 4,000 | $2K |
| Bank of America Corp. | 0.00% | Add +235.6% | 1,463 | $818 |
| SBI Securities Co., Ltd. | 0.00% | Reduce -4.5% | 642 | $359 |
| Barclays PLC | 0.00% | Add +1225.0% | 53 | $30 |
| Cantor Fitzgerald, L. P. | 0.00% | New | 50 | $28 |
| Allworth Financial LP | 0.00% | No change | 6 | $4 |
"% of holder's portfolio" is CLIR's weight in each manager's 13F, not the share of Clearsign Technologies Corp. the manager owns.