CLIR ClearSign Technologies Corporation

NASDAQ
$3.52

ClearSign Technologies Corporation (CLIR) Institutional Ownership

What the institutions did with CLIR last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.

Managers compared
25
filed both this quarter and last
Managers holding
24
+4 on the quarter
Buyers
9
5 opened new
Sellers
2
1 sold out entirely
Buyer share
81.8%
of managers who traded it
Breadth
+63.6
net buyers, as a share of those trading

Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.

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Ownership map

Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.

Cut Unchanged Added Color saturates at ±50%.

Largest holders

Manager Shares % of reported
VANGUARD CAPITAL MANAGEMENT LLC 105.4K 22.6%
Cambridge Investment Research Advisors, Inc. 88.6K 19.0%
SIMON QUICK ADVISORS, LLC 60.3K 12.9%
GEODE CAPITAL MANAGEMENT, LLC 51.5K 11.0%
Beacon Pointe Advisors, LLC 27.2K 5.8%
VANGUARD FIDUCIARY TRUST CO 23.5K 5.0%
HighTower Advisors, LLC 22.7K 4.9%
CITADEL ADVISORS LLC 20.6K 4.4%
BlackRock, Inc. 19.5K 4.2%
DDD Partners, LLC 12.0K 2.6%
NORTHERN TRUST CORP 10.1K 2.2%
Rockefeller Capital Management L.P. 8.1K 1.7%
NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO 7.2K 1.5%
WELLS FARGO & COMPANY/MN 2.1K 0.5%
Gleason Group, Inc. 1.8K 0.4%
Centerpoint Advisors, LLC 1.6K 0.3%
Tower Research Capital LLC (TRC) 1.5K 0.3%
Vanguard Global Advisers, LLC 1.4K 0.3%
ROYAL BANK OF CANADA 684 0.1%
DEUTSCHE BANK AG\ 400 0.1%
UBS Group AG 100 0.0%
BARCLAYS PLC 33 0.0%
SBI Securities Co., Ltd. 12 0.0%
GROUP ONE TRADING LLC 9 0.0%

Largest changes

Manager Action Previous Current Change
Cambridge Investment Research Advisors, Inc. Increased 44.3K 88.6K +44.3K
CITADEL ADVISORS LLC New 0 20.6K +20.6K
Creative Planning Sold Out 12.4K 0 -12.4K
NORTHERN TRUST CORP New 0 10.1K +10.1K
HighTower Advisors, LLC Increased 12.7K 22.7K +10.0K
GEODE CAPITAL MANAGEMENT, LLC Reduced 57.7K 51.5K -6.2K
ROYAL BANK OF CANADA New 0 684 +684
Tower Research Capital LLC (TRC) Increased 1.0K 1.5K +473
UBS Group AG New 0 100 +100
BARCLAYS PLC New 0 33 +33
SBI Securities Co., Ltd. Increased 11 12 +1

13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.