Clearsign TechnologiesCLIR
13F holders, Q4 2025 (December 31)38holders −1
4new positions
5sold out
1famous investor
$0.56avg. 13F price*
At the end of Q4 2025, 38 institutions reported holding Clearsign Technologies Corp. (CLIR) in their 13F filings, down 1 from Q3 2025. 4 opened new positions and 5 sold out. The largest holders were Vanguard Group Inc. ($736K), Simon Quick Advisors, LLC ($335K) and Geode Capital Management, LLC ($291K). One famous investor held it Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Clearsign Technologies Corp.
- CUSIP
- 185064102
- Latest filing quarter
- Q4 2025
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 4 | $31K |
| Exits | 5 | $46K |
All 13F filers, Q3 2025 → Q4 2025: 318,554 shares bought and 89,229 shares sold, net +229,325 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 38 holders
| Vanguard Group Inc. | 0.00% | Add +3.5% | 1,322,980 | $736K |
| Simon Quick Advisors, LLC | 0.01% | No change | 603,149 | $335K |
| Geode Capital Management, LLC | 0.00% | Reduce -0.0% | 523,109 | $291K |
| Cambridge Investment Research Advisors, Inc. | 0.00% | No change | 443,000 | $246K |
| BlackRock, Inc. | 0.00% | No change | 199,304 | $111K |
| Creative Planning | 0.00% | Reduce -14.5% | 136,053 | $76K |
| HighTower Advisors, LLC | 0.00% | No change | 126,809 | $71K |
| DDD Partners, LLC | 0.00% | Add +4.3% | 120,000 | $67K |
| Susquehanna International Group, LLP | 0.00% | Add +110.2% | 104,759 | $58K |
| State Street Corp. | 0.00% | No change | 88,989 | $49K |
| Rockefeller Capital Management L.P. | 0.00% | Add +801.4% | 81,209 | $45K |
| Renaissance Technologies | 0.00% | Add +89.6% | 77,800 | $43K |
| Northern Trust Corp. | 0.00% | Reduce -1.9% | 74,020 | $41K |
| Northwestern Mutual Wealth Management Co. | 0.00% | No change | 71,730 | $40K |
| Disciplined Investments, LLC | 0.01% | No change | 55,886 | $31K |
| Americana Partners, LLC | 0.00% | Add +83.3% | 55,000 | $31K |
| Raymond James Financial Inc. | 0.00% | Reduce -0.0% | 51,847 | $29K |
| Integrity Alliance, Llc. | 0.00% | No change | 39,524 | $22K |
| Prevail Innovative Wealth Advisors, LLC | 0.00% | No change | 38,306 | $21K |
| Highland Capital Management, LLC | 0.00% | No change | 32,454 | $18K |
| XTX Topco Ltd | 0.00% | New | 29,015 | $16K |
| Two Sigma Securities, LLC | 0.00% | New | 26,794 | $15K |
| Jane Street Group, LLC | 0.00% | Add +80.2% | 23,825 | $13K |
| Chicago Partners Investment Group LLC | 0.00% | No change | 18,000 | $13K |
| Wells Fargo & Company | 0.00% | No change | 21,050 | $12K |
| Gleason Group, Inc. | 0.00% | No change | 18,018 | $10K |
| Centerpoint Advisors, LLC | 0.00% | No change | 15,700 | $9K |
| HRT Financial LP | 0.00% | Reduce -16.1% | 17,578 | $9K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +529.3% | 13,795 | $8K |
| Flax Pond Capital, LLC | 0.01% | — | 13,549 | $8K |
| Simplex Trading, LLC | 0.00% | Add +20.2% | 7,211 | $4K |
| Deutsche Bank AG | 0.00% | No change | 4,000 | $2K |
| UBS Group AG | 0.00% | Reduce -44.5% | 1,225 | $681 |
| Bank of America Corp. | 0.00% | Reduce -32.5% | 907 | $504 |
| SBI Securities Co., Ltd. | 0.00% | Reduce -66.0% | 103 | $57 |
| Tucker Asset Management LLC | 0.00% | New | 39 | $22 |
| Allworth Financial LP | 0.00% | No change | 6 | $4 |
| Citigroup Inc. | 0.00% | New | 1 | $1 |
"% of holder's portfolio" is CLIR's weight in each manager's 13F, not the share of Clearsign Technologies Corp. the manager owns.