CLIR Institutional Ownership & Shareholders
CLEARSIGN TECHNOLOGIES CORP (CLIR) is currently held by 22 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $1.27M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Vanguard Capital Management Llc is currently the largest disclosed institutional shareholder of CLIR tracked by InsiderSet, reporting ownership valued at approximately $386,924 in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $259,355.34, representing an estimated loss of -32.97% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 97% of the total disclosed CLIR value among the investors covered in this analysis. Major shareholders include Vanguard Capital Management Llc, Simon Quick Advisors, Llc, Geode Capital Management, Llc, and several other long-term asset managers with concentrated positions in CLEARSIGN TECHNOLOGIES CORP (CLIR).
This page ranks the largest institutional CLIR shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
22
Total Reported Value
$1.27M
Largest Holder
Vanguard Capital Management Llc
Largest Position
$386,924
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
44
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Vanguard Capital Management Llc | 0.00% | 105,429 | $386,924 | $259,355 | -$127,569 | -32.97% | |
| Simon Quick Advisors, Llc | 0.01% | 60,314 | $214,115 | $148,372 | -$65,743 | -30.70% | |
| Geode Capital Management, Llc | 0.00% | 51,457 | $188,890 | $126,584 | -$62,306 | -32.99% | |
| Beacon Pointe Advisors, Llc | 0.00% | 27,173 | $99,725 | $66,846 | -$32,879 | -32.97% | |
| Vanguard Fiduciary Trust Co | 0.00% | 23,460 | $86,098 | $57,712 | -$28,386 | -32.97% | |
| Citadel Advisors Llc | 0.00% | 20,565 | $75,474 | $50,590 | -$24,884 | -32.97% | |
| Blackrock, Inc. | 0.00% | 19,503 | $71,576 | $47,977 | -$23,599 | -32.97% | |
| Ddd Partners, Llc | 0.00% | 12,000 | $44,040 | $29,520 | -$14,520 | -32.97% | |
| Northern Trust Corp | 0.00% | 10,080 | $36,994 | $24,797 | -$12,197 | -32.97% | |
| Rockefeller Capital Management L.P. | 0.00% | 8,120 | $29,800 | $19,975 | -$9,825 | -32.97% | |
| Wells Fargo & Company/Mn | 0.00% | 2,125 | $7,799 | $5,228 | -$2,572 | -32.97% | |
| Gleason Group, Inc. | 0.00% | 1,802 | $6,397 | $4,433 | -$1,964 | -30.70% | |
| Centerpoint Advisors, Llc | 0.00% | 1,560 | $6,000 | $3,838 | -$2,162 | -36.04% | |
| Tower Research Capital Llc (Trc) | 0.00% | 1,518 | $5,571 | $3,734 | -$1,837 | -32.97% | |
| Vanguard Global Advisers, Llc | 0.00% | 1,350 | $4,955 | $3,321 | -$1,634 | -32.98% | |
| Royal Bank Of Canada | 0.00% | 684 | $3,000 | $1,683 | -$1,317 | -43.91% | |
| Deutsche Bank Ag\ | 0.00% | 400 | $1,468 | $984 | -$484 | -32.97% | |
| Ubs Group Ag | 0.00% | 100 | $367 | $246 | -$121 | -32.97% | |
| Cambridge Investment Research Advisors, Inc. | 0.00% | 44,300 | $163 | $108,978 | +$108,815 | +66757.67% | |
| Barclays Plc | 0.00% | 33 | $121 | $81 | -$40 | -32.91% | |
| Sbi Securities Co., Ltd. | 0.00% | 16 | $57 | $39 | -$18 | -30.95% | |
| Group One Trading Llc | 0.00% | 9 | $33 | $22 | -$11 | -32.91% |
Frequently asked questions about CLIR
Who are the largest institutional holders of CLIR?
The largest institutional holders of CLIR reported in the latest SEC Form 13F filings include Vanguard Capital Management Llc, Simon Quick Advisors, Llc, Geode Capital Management, Llc, Beacon Pointe Advisors, Llc, and Vanguard Fiduciary Trust Co. InsiderSet ranks institutional holders by their latest reported CLIR position.
What is CLIR institutional ownership?
This page tracks CLIR positions reported by institutional investment managers through SEC Form 13F. CLEARSIGN TECHNOLOGIES CORP (CLIR) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own CLIR?
InsiderSet currently tracks 22 institutional managers reporting CLIR holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of CLIR shareholders.
How much CLIR stock do institutions own?
Institutional investment managers disclosed approximately $1.27M in CLIR holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was CLIR institutional ownership last updated?
The latest CLIR institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional CLIR holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its CLIR position after the reporting date.
Are institutions buying or selling CLIR?
Institutional buying and selling can be analyzed by comparing CLIR positions across consecutive 13F reporting periods. InsiderSet's CLIR Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View CLIR ownership changes.
How has CLIR institutional ownership changed over time?
InsiderSet tracks CLIR institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.