Clearsign TechnologiesCLIR
13F holders, Q1 2025 (March 31)At the end of Q1 2025, 38 institutions reported holding Clearsign Technologies Corp. (CLIR) in their 13F filings, up 7 from Q4 2024. 8 opened new positions and 1 sold out. The largest holders were Vanguard Group Inc. ($848K), Simon Quick Advisors, LLC ($452K) and Geode Capital Management, LLC ($412K). 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 Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 8 | $572K |
| Exits | 1 | $33 |
All 13F filers, Q4 2024 → Q1 2025: 840,294 shares bought and 98,755 shares sold, net +741,539 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 38 holders
| Vanguard Group Inc. | 0.00% | Add +1.4% | 1,130,730 | $848K |
| Simon Quick Advisors, LLC | 0.03% | New | 603,149 | $452K |
| Geode Capital Management, LLC | 0.00% | Add +2.3% | 549,186 | $412K |
| Cambridge Investment Research Advisors, Inc. | 0.00% | Add +0.0% | 453,001 | $340K |
| BlackRock, Inc. | 0.00% | No change | 199,304 | $149K |
| Creative Planning | 0.00% | Reduce -32.5% | 141,853 | $106K |
| HighTower Advisors, LLC | 0.00% | No change | 126,809 | $95K |
| DDD Partners, LLC | 0.01% | Add +9.5% | 115,000 | $86K |
| State Street Corp. | 0.00% | No change | 88,989 | $67K |
| Northern Trust Corp. | 0.00% | No change | 75,466 | $57K |
| Renaissance Technologies | 0.00% | Add +28.2% | 75,021 | $56K |
| Susquehanna International Group, LLP | 0.00% | New | 70,885 | $53K |
| Raymond James Financial Inc. | 0.00% | No change | 51,832 | $39K |
| Disciplined Investments, LLC | 0.02% | No change | 47,148 | $35K |
| Citadel Advisors | 0.00% | Add +17.4% | 40,082 | $30K |
| Integrity Alliance, Llc. | 0.00% | New | 39,524 | $30K |
| Prevail Innovative Wealth Advisors, LLC | 0.01% | No change | 38,306 | $29K |
| Highland Capital Management, LLC | 0.00% | No change | 32,454 | $24K |
| Americana Partners, LLC | 0.00% | No change | 30,000 | $23K |
| Charles Schwab Investment Management Inc. | 0.00% | No change | 25,555 | $19K |
| XTX Topco Ltd | 0.00% | Add +22.8% | 24,201 | $18K |
| Wells Fargo & Company | 0.00% | No change | 21,050 | $16K |
| Goldman Sachs Group Inc. | 0.00% | Reduce -52.0% | 20,493 | $15K |
| Chicago Partners Investment Group LLC | 0.00% | New | 28,000 | $15K |
| UBS Group AG | 0.00% | Reduce -20.8% | 18,874 | $14K |
| Centerpoint Advisors, LLC | 0.00% | No change | 15,700 | $12K |
| Diversified Portfolios, Inc. | 0.00% | New | 13,000 | $10K |
| Royal Bank of Canada | 0.00% | New | 9,468 | $7K |
| Northwestern Mutual Wealth Management Co. | 0.00% | New | 7,207 | $5K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +273.4% | 6,120 | $5K |
| Deutsche Bank AG | 0.00% | No change | 4,000 | $3K |
| SBI Securities Co., Ltd. | 0.00% | Add +4.7% | 672 | $504 |
| Bank of America Corp. | 0.00% | Add +5.3% | 436 | $327 |
| JPMorgan Chase & Co. | 0.00% | Reduce -8.5% | 86 | $65 |
| Allworth Financial LP | 0.00% | No change | 6 | $4 |
| Barclays PLC | 0.00% | New | 4 | $3 |
| Simplex Trading, LLC | 0.00% | Reduce -89.0% | 393 | $0 |
| Navigoe, LLC | 0.00% | No change | 23 | $0 |
"% of holder's portfolio" is CLIR's weight in each manager's 13F, not the share of Clearsign Technologies Corp. the manager owns.