CLEARSIGN TECHNOLOGIES CORP (CLIR) Institutional Ownership Changes & 13F Activity
CLEARSIGN TECHNOLOGIES CORP (CLIR). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q4 2025). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Northwestern Mutual Wealth Management Co, Geode Capital Management, Llc, Cambridge Investment Research Advisors, Inc., Blackrock, Inc., and Creative Planning.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Flax Pond Capital, Llc | Buy | +13,549 | — | 13,549 | $7.54K | Q4 2025 | Mar 09, 2026 |
| Raymond James Financial Inc | Buy | +51,847 | — | 51,847 | $28.83K | Q4 2025 | Feb 18, 2026 |
| Creative Planning | Buy | +136,053 | — | 136,053 | $75.66K | Q4 2025 | Feb 17, 2026 |
| Susquehanna International Group, Llp | Buy | +104,759 | — | 104,759 | $58.26K | Q4 2025 | Feb 17, 2026 |
| Rockefeller Capital Management L.P. | Buy | +81,209 | — | 81,209 | $45.16K | Q4 2025 | Feb 17, 2026 |
| Northern Trust Corp | Buy | +74,020 | — | 74,020 | $41.16K | Q4 2025 | Feb 17, 2026 |
| Xtx Topco Ltd | Buy | +29,015 | — | 29,015 | $16.14K | Q4 2025 | Feb 17, 2026 |
| Two Sigma Securities, Llc | Buy | +26,794 | — | 26,794 | $14.90K | Q4 2025 | Feb 17, 2026 |
| Tower Research Capital Llc (Trc) | Buy | +13,795 | — | 13,795 | $7.67K | Q4 2025 | Feb 17, 2026 |
| Bank Of America Corp | Buy | +907 | — | 907 | $504.00 | Q4 2025 | Feb 17, 2026 |
| State Street Corp | Buy | +88,989 | — | 88,989 | $49.49K | Q4 2025 | Feb 13, 2026 |
| Wells Fargo & Company/Mn | Buy | +21,050 | — | 21,050 | $11.71K | Q4 2025 | Feb 13, 2026 |
| Centerpoint Advisors, Llc | Buy | +15,700 | — | 15,700 | $9.00K | Q4 2025 | Feb 13, 2026 |
| Citigroup Inc | Buy | +1 | — | 1 | $1.00 | Q4 2025 | Feb 13, 2026 |
| Blackrock, Inc. | Buy | +199,304 | — | 199,304 | $110.83K | Q4 2025 | Feb 12, 2026 |
| Renaissance Technologies LLC | Buy | +36,769 | +89.6% | 77,800 | $43.27K | Q4 2025 | Feb 12, 2026 |
| Jane Street Group, Llc | Buy | +23,825 | — | 23,825 | $13.25K | Q4 2025 | Feb 12, 2026 |
| Hrt Financial Lp | Buy | +17,578 | — | 17,578 | $9.00K | Q4 2025 | Feb 12, 2026 |
| Simplex Trading, Llc | Buy | +7,211 | — | 7,211 | $4.01K | Q4 2025 | Feb 11, 2026 |
| Deutsche Bank Ag\ | Buy | +4,000 | — | 4,000 | $2.24K | Q4 2025 | Feb 11, 2026 |
| Geode Capital Management, Llc | Buy | +523,109 | — | 523,109 | $290.96K | Q4 2025 | Feb 09, 2026 |
| Integrity Alliance, Llc. | Buy | +39,524 | — | 39,524 | $21.98K | Q4 2025 | Feb 09, 2026 |
| Hightower Advisors, Llc | Buy | +126,809 | — | 126,809 | $70.52K | Q4 2025 | Feb 06, 2026 |
| Americana Partners, Llc | Buy | +55,000 | — | 55,000 | $30.59K | Q4 2025 | Feb 06, 2026 |
| Prevail Innovative Wealth Advisors, Llc | Buy | +38,306 | — | 38,306 | $21.30K | Q4 2025 | Feb 06, 2026 |
| Northwestern Mutual Wealth Management Co | Buy | +607,350 | — | 607,350 | $22.36M | Q4 2025 | Feb 05, 2026 |
| Cambridge Investment Research Advisors, Inc. | Buy | +443,000 | — | 443,000 | $246.00K | Q4 2025 | Feb 05, 2026 |
| Disciplined Investments, Llc | Buy | +55,886 | — | 55,886 | $31.08K | Q4 2025 | Feb 05, 2026 |
| Allworth Financial Lp | Buy | +6 | — | 6 | $4.00 | Q4 2025 | Feb 05, 2026 |
| Sbi Securities Co., Ltd. | Buy | +103 | — | 103 | $57.00 | Q4 2025 | Feb 03, 2026 |
Frequently asked questions about CLIR activity
Which institutional owners are buying CLIR?
Institutional owners buying CLIR include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in CLIR activity?
"Buy" means an investor increased their reported position in CLIR compared to the prior reporting period. This reflects growing exposure to CLEARSIGN TECHNOLOGIES CORP (CLIR) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in CLIR increasing?
Institutional interest in CLIR can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.
Related CLIR Institutional Insights
- CLIR Overview
- CLIR 13F Institutional Holders
- CLIR Superinvestors
- Industrials Sector Institutional Ownership
- Industrials Sector Portfolio Overlap
- Institutional Portfolio Overlap & Shared Holdings
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- CLIR Insider Trading & SEC Form 4 Activity
- CLIR Articles
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