CLIR — CLEARSIGN TECHNOLOGIES CORP
As of Q2 2026, 7 SEC-registered investment managers reported holding CLIR (CLEARSIGN TECHNOLOGIES CORP) in their latest 13F filings, with a combined reported value of $382.57K across 104.23K shares. That is +30.8% by share count (+24.52K shares) versus the previous quarter, while reported value moved +10.1%. Ownership is concentrated: the five largest holders account for 99.5% of reported value and the top ten for 100.0%.
Compared with the prior quarter, 3 opened new positions, 1 trimmed. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.
CLIR is classified in the Industrials sector.
All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.
| Fund | Quarter | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|---|
| Vanguard Group history | Q4 2025 | 1.32M | $735.58K | 0.00% | Add |
| Geode Capital Management history | Q2 2026 | 51.46K | $188.89K | 0.00% | Reduce |
| Citadel Advisors history | Q2 2026 | 20.57K | $75.47K | 0.00% | New |
| BlackRock Inc history | Q2 2026 | 19.50K | $71.58K | 0.00% | Hold |
| Renaissance Technologies history | Q4 2025 | 77.80K | $43.27K | 0.00% | Add |
| Northern Trust Corp history | Q2 2026 | 10.08K | $36.99K | 0.00% | New |
| BNY Mellon history | Q4 2023 | 23.26K | $25.82K | 0.00% | Hold |
| Two Sigma Investments history | Q4 2021 | 11.95K | $16.00K | 0.00% | Add |
| Charles Schwab Investment Management history | Q2 2025 | 25.55K | $13.67K | 0.00% | Hold |
| Millennium Management history | Q1 2024 | 14.01K | $13.52K | 0.00% | New |
| Goldman Sachs Group history | Q3 2025 | 11.04K | $8.52K | 0.00% | New |
| Wells Fargo & Co history | Q2 2026 | 2.12K | $7.80K | 0.00% | Hold |
| Morgan Stanley history | Q3 2023 | 4.94K | $5.38K | 0.00% | Hold |
| Deutsche Bank AG history | Q2 2026 | 400 | $1.47K | 0.00% | Hold |
| Bank of America Corp history | Q4 2025 | 907 | $504 | 0.00% | Reduce |
| UBS Group AG history | Q2 2026 | 100 | $367 | 0.00% | New |
| JPMorgan Chase & Co history | Q1 2025 | 86 | $65 | 0.00% | Reduce |
| Citigroup Inc history | Q4 2025 | 1 | $1 | 0.00% | New |
| Fidelity Management & Research (FMR) history | Q2 2024 | 1 | $1 | 0.00% | New |
New Positions (Q2 2026)
- Citadel Advisors 20.57K sh · $75.47K
- Northern Trust Corp 10.08K sh · $36.99K
- UBS Group AG 100 sh · $367
Fully Exited (vs previous quarter)
No tracked fund fully exited this quarter.
Fund Position History — shares by quarter (top 19 funds)
| Fund | Q3 2021 | Q4 2021 | Q1 2022 | Q2 2022 | Q3 2022 | Q4 2022 | Q1 2023 | Q2 2023 | Q3 2023 | Q4 2023 | Q1 2024 | Q2 2024 | Q3 2024 | Q4 2024 | Q1 2025 | Q2 2025 | Q3 2025 | Q4 2025 | Q1 2026 | Q2 2026 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Geode Capital Management | 257.91K | 257.91K | 257.91K | 259.61K | 259.61K | 258.96K | 258.96K | 322.83K | 319.68K | 319.68K | 325.77K | 384.59K | 521.23K | 537.00K | 549.19K | 553.67K | 523.23K | 523.11K | 57.68K | 51.46K |
| Citadel Advisors | 40.77K | 11.90K | — | — | 25.70K | 25.55K | 38.11K | 52.87K | 97.06K | 65.94K | 144.17K | — | — | 34.13K | 46.08K | 44.32K | 26.71K | — | — | 20.57K |
| BlackRock Inc | — | — | — | — | — | — | — | — | — | — | — | — | 199.30K | 199.30K | 199.30K | 199.30K | 199.30K | 199.30K | 19.50K | 19.50K |
| Northern Trust Corp | 49.52K | 49.52K | 49.52K | 49.52K | 49.52K | 49.52K | 62.28K | 62.12K | 61.54K | 61.09K | 61.09K | 60.95K | 60.95K | 75.47K | 75.47K | 75.47K | 75.47K | 74.02K | — | 10.08K |
| Wells Fargo & Co | 15.71K | 19.21K | 21.21K | 21.22K | 21.29K | 21.31K | 21.31K | 21.33K | 21.33K | 22.35K | 21.35K | 21.05K | 21.05K | 21.05K | 21.05K | 21.05K | 21.05K | 21.05K | 2.12K | 2.12K |
| Deutsche Bank AG | 4.00K | 4.00K | 4.00K | 4.00K | 4.00K | 4.00K | 4.00K | 4.00K | 4.00K | 4.00K | 4.00K | 4.00K | 4.00K | 4.00K | 4.00K | 4.00K | 4.00K | 4.00K | 400 | 400 |
| UBS Group AG | 5.33K | — | — | 793 | 17.68K | 5.99K | 9.72K | — | 300 | 1.15K | 3.37K | 23.66K | 9.94K | 23.83K | 18.87K | 16.09K | 2.21K | 1.23K | — | 100 |
| Goldman Sachs Group | — | — | — | — | 14.95K | — | — | — | — | — | — | — | — | 42.65K | 20.49K | — | 11.04K | — | — | — |
| Renaissance Technologies | — | — | — | — | — | — | — | 29.25K | 21.20K | — | — | — | — | 58.50K | 75.02K | 58.00K | 41.03K | 77.80K | — | — |
| Bank of America Corp | 1.54K | — | — | — | — | 72 | — | — | — | 40 | — | 379 | 411 | 414 | 436 | 1.46K | 1.34K | 907 | — | — |
| Citigroup Inc | — | — | — | — | — | — | — | — | — | — | — | — | — | 23 | — | — | — | 1 | — | — |
| Vanguard Group | 1.08M | 1.08M | 1.08M | 1.07M | 1.07M | 1.07M | 1.07M | 1.07M | 1.07M | 1.10M | 1.12M | 1.12M | 1.12M | 1.12M | 1.13M | 1.17M | 1.28M | 1.32M | — | — |
| Fidelity Management & Research (FMR) | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — |
| Morgan Stanley | 5.94K | 5.30K | 6.67K | 5.24K | 14.22K | 4.95K | 4.94K | 4.94K | 4.94K | — | — | — | — | — | — | — | — | — | — | — |
| JPMorgan Chase & Co | — | — | — | — | — | — | — | 1.00K | 37 | 52 | 79 | 96 | 98 | 94 | 86 | — | — | — | — | — |
| Two Sigma Investments | 10.84K | 11.95K | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| BNY Mellon | 24.54K | 24.54K | 24.54K | 23.26K | 23.26K | 23.26K | 23.26K | 23.26K | 23.26K | 23.26K | — | — | — | — | — | — | — | — | — | — |
| Millennium Management | — | — | — | — | — | 20.84K | 29.08K | 25.54K | — | — | 14.01K | — | — | — | — | — | — | — | — | — |
| Charles Schwab Investment Management | 12.07K | — | — | — | — | — | — | 25.55K | 25.55K | 25.55K | 25.55K | 25.55K | 25.55K | 25.55K | 25.55K | 25.55K | — | — | — | — |
▲ Bought Low (fund opened/added, stock rose ≥5% next quarter) ▼ Sold High (fund reduced, stock fell ≥5% next quarter)
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