CLIR · ClearSign Technologies Corp · Holdings

$3.85 -0.18 (-4.47%) At close · Sep 14

Market Cap

$27.30M

6.81M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP →

Quarter:

Holders: 24

Total Value: $1,548,102

Total Shares: 421,828

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 24 13F filers · Δ vs Mar 31, 2026

Top Holder

25.0%

−0.8 pts

Top 5

68.4%

−3.7 pts

Top 10

91.7%

+0.0 pts

HHI

1,256

Broadly held−84

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: +3

Institutional value: -13.2%

Shares held: +3.1%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Large HighTower Advisors, LLC	+9,982	22,662
Mid Tower Research Capital LLC (TRC)	+473	1,518
Mid SBI Securities Co., Ltd.	+1	12

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds	Open
Mega GEODE CAPITAL MANAGEMENT, LLC	−6,226	51,457

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Mega CITADEL ADVISORS LLC	20,565	$75,473
Mega NORTHERN TRUST CORP	10,080	$36,993
Mega ROYAL BANK OF CANADA	684	$2,510
Mega UBS Group AG	100	$367
Mega BARCLAYS PLC	33	$121

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)	Open
Large Creative Planning	12,355	$53,867
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP	10,500	$45,780

Filter: New 5 Increased 3 Reduced 1 Sold out 2 Unchanged 15

Showing 24 of 24

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

VANGUARD CAPITAL MANAGEMENT LLC

$386,924

24.99%

105,429

SIMON QUICK ADVISORS, LLC

$221,352

14.30%

60,314

GEODE CAPITAL MANAGEMENT, LLC

$188,847

12.20%

51,457

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	9,648	$35,408	18.7%	Defined
Held directly	41,809	$153,439	81.3%	Defined

Cambridge Investment Research Advisors, Inc.

$162,581

10.50%

44,300

Beacon Pointe Advisors, LLC

$99,724

6.44%

27,173

VANGUARD FIDUCIARY TRUST CO

$86,098

5.56%

23,460

HighTower Advisors, LLC

$83,169

5.37%

22,662

CITADEL ADVISORS LLC

$75,473

4.88%

20,565

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	20,565	$75,473	100.0%	Defined

BlackRock, Inc.

$71,576

4.62%

19,503

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BlackRock Institutional Trust Company, N.A.	19,503	$71,576	100.0%	Sole

DDD Partners, LLC

$44,040

2.84%

12,000

NORTHERN TRUST CORP

$36,993

2.39%

10,080

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	10,080	$36,993	100.0%	Defined

Rockefeller Capital Management L.P.

$29,800

1.92%

8,120

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
ROCKEFELLER & CO. LLC	7,220	$26,497	88.9%	Defined
ROCKEFELLER FINANCIAL LLC	900	$3,303	11.1%	Defined

NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO

$26,321

1.70%

7,172

WELLS FARGO & COMPANY/MN

$7,798

0.50%

2,125

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO CLEARING SERVICES, LLC	2,125	$7,798	100.0%	Defined

Gleason Group, Inc.

$6,613

0.43%

1,802

Centerpoint Advisors, LLC

$5,725

0.37%

1,560

Tower Research Capital LLC (TRC)

$5,571

0.36%

1,518

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Latour Trading LLC (Latour)	1,518	$5,571	100.0%	Defined

Vanguard Global Advisers, LLC

$4,954

0.32%

1,350

ROYAL BANK OF CANADA

$2,510

0.16%

684

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RBC Capital Markets, LLC	684	$2,510	100.0%	Defined

DEUTSCHE BANK AG\

$1,468

0.09%

400

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Deutsche Bank Trust Co Americas	400	$1,468	100.0%	Defined

UBS Group AG

$367

0.02%

100

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS AG	100	$367	100.0%	Defined

BARCLAYS PLC

$121

0.01%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS CAPITAL INC.	33	$121	100.0%	Defined

SBI Securities Co., Ltd.

$44

0.00%

GROUP ONE TRADING LLC

$33

0.00%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	10,500	$45,780	100.0%	Other

Key facts CIK 1434524 CUSIP 185064201 13F (30d) 2 filings 2 filers Visit website Investor relations