Clearsign Technologies Corp: which funds bought and sold

Institutions that bought and sold Clearsign Technologies shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.

Between March 31, 2026 and June 30, 2026, 10 institutions that filed 13F reports for both quarters added to or opened positions in Clearsign Technologies, and 2 cut or closed them. Together they added a net 68K shares, +17.1% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 21K shares; index fund managers were net buyers of 3,854 shares (+1.9%). 6 opened a new position and 1 sold out entirely.

Bought, Q2 2026 10 institutions, 6 of them new holders Sold, Q2 2026 2 institutions, 1 of them sold out

Net change, all compared +68K shares (+17.1%)

Net change, active managers +21K shares (—), 1 bought, 0 sold

Buyers versus sellers

institutions compared, 26

10 bought 14 2 sold

Active managers and hedge funds 1 bought · 0 sold · +21K

Index fund managers 1 bought · 1 sold · +3,854

Other institutions 8 bought · 1 sold · +44K

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
Cambridge Investment Research Advisors, Inc.	+44K +100.0%	89K	$326,000
Citadel Advisors LLC Hedge fund	+21K New position	21K	$75,474
Northern Trust Corp Index funds	+10K New position	10K	$36,994
Hightower Advisors, LLC	+9,982 +78.7%	23K	$83,170
Integrated Wealth Concepts LLC	+687 New position	687	$2,521
Royal Bank Of Canada	+684 New position	684	$3,000
Tower Research Capital LLC (TRC)	+473 +45.3%	1,518	$5,571
UBS Group AG	+100 New position	100	$367
Barclays PLC	+33 New position	33	$121
Sbi Securities Co., Ltd.	+1 +9.1%	12	$44

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Citadel Advisors LLC Hedge fund	+21K New position	21K	$75,474

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Creative Planning	−12K Sold out	0	—
Geode Capital Management, LLC Index funds	−6,226 −10.8%	51K	$188,890

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
None of the active managers on our list.

New positions

largest by value

Institution	Shares	Value June 30, 2026
Citadel Advisors LLCHedge fund	21K	$75,474
Northern Trust CorpIndex funds	10K	$36,994
Royal Bank Of Canada	684	$3,000
Integrated Wealth Concepts LLC	687	$2,521
UBS Group AG	100	$367
Barclays PLC	33	$121

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Creative Planning	12K	$53,868

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 25
Ten largest holders: 92.4%
Index fund managers: 45.0%
Active managers and hedge funds: 4.4%

Buying and selling by type of institution, March 31, 2026 to June 30, 2026
Type	Bought	Sold	New	Sold out	Net change in shares	Net %
Active managers and hedge funds	1	0	1	0	+21K	—
Index fund managers	1	1	1	0	+3,854	+1.9%
Other institutions	8	1	4	1	+44K	+22.8%

Active managers and hedge funds: a list we maintain of about 400 well-known stock-picking firms and hedge funds, matched by SEC registration number (CIK) and checked against the filer names each quarter. Index fund managers: the large index houses, such as BlackRock, Vanguard, State Street, Geode and Northern Trust. Every other filer (banks, brokers, wealth managers, pension funds, insurers and firms not on the list) counts as another institution. A firm that files under several SEC registrations appears once for each.

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