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ClearSign Technologies Corp · 13F filings

CLIR Institutional Ownership

Holdings as of Jun 30, 2026From SEC Form 13FUpdated

Who owns ClearSign Technologies Corp and what the big funds did with it last quarter, from every SEC 13F filing. 26 funds reported holding CLIR at Jun 30, 2026, together owning 6.9% of the company.

← CLIR stock page

Fund sentiment
Strongly bullish
Strongly bearishNeutralStrongly bullish
  • ▲11 buying vs 2 selling
  • ▲Held by funds +1.0 pts
  • ▲Funds holding +6
  • ▲Superinvestors: 1 added, 0 cut
  • ●Put/call not meaningful

What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.

Funds holding26+6 vs Q1 2026
Held by funds6.9%+1.0 pts
Value held$1.7M467K shares
Put/call ratio–market makers left out

Funds holding and ownership

8 quarters
Q3 2024: 27 fundsQ3 '24Q4 2024: 31 fundsQ4 '24Q1 2025: 38 fundsQ1 '25Q2 2025: 37 fundsQ2 '25Q3 2025: 39 fundsQ3 '25Q4 2025: 38 fundsQ4 '25Q1 2026: 20 fundsQ1 '26Q2 2026: 26 fundsQ2 '266.9% owned
Funds holdingHeld by funds %

Quarter over quarter

all 13F filers
Q2 2026This quarterQ1 2026Change
Funds holding2620+30.0%
In funds' top 1000–
13F shares467K398K+17.2%
Held by funds6.9%5.8%+1.0 pts
New positions717−58.8%
Increased40–
Reduced10–
Sold out137−97.3%
Calls (shares)00–
Puts (shares)00–
Put/call ratio–––

Buyers vs sellers

adding or new vs cutting or sold out
Q4 2024: 12 buyingQ4 2024: 6 sellingQ4 '24Q1 2025: 17 buyingQ1 2025: 6 sellingQ1 '25Q2 2025: 17 buyingQ2 2025: 11 sellingQ2 '25Q3 2025: 10 buyingQ3 2025: 16 sellingQ3 '25Q4 2025: 13 buyingQ4 2025: 11 sellingQ4 '25Q1 2026: 17 buyingQ1 2026: 37 sellingQ1 '26Q2 2026: 11 buyingQ2 2026: 2 sellingQ2 '26
Buying 11Selling 2latest quarter

Superinvestors in CLIR

All superinvestors →

Who owns CLIR

share of fund held shares
  • Index and passive funds45.2%
  • Active managers and hedge funds54.1%
  • Banks and brokers0.7%
  • Pensions, insurers and other0.0%

The top 10 holders own 92.3% of all CLIR shares that funds reported. Groups are our own grouping of filers by name.

Filed so far for Q3 2026

2 funds changed their position

Top holders

Q2 2026
#FundOf companySharesValueChange
1Vanguard Capital Management LLC1.55%105K$387K0
2Cambridge Investment Research Advisors, Inc.1.30%89K$326K+44K
3Simon Quick Advisors, LLC0.89%60K$221K0
4Geode Capital Management, LLC0.76%51K$189K−6,226
5Beacon Pointe Advisors, LLC0.40%27K$100K0
6Vanguard Fiduciary Trust Co0.34%23K$86K0
7HighTower Advisors, LLC0.33%23K$83K+9,982
8Citadel Advisors LLC0.30%21K$75K+21K
9BlackRock, Inc.0.29%20K$72K0
10DDD Partners, LLC0.18%12K$44K0
🔒 15 more top holders. Create a free account or sign in to see them.

CLIR institutional ownership FAQ

Who owns the most CLIR stock?

In Q2 2026 13F filings the largest holder of CLIR was Vanguard Capital Management LLC, followed by Cambridge Investment Research Advisors, Inc. and Simon Quick Advisors, LLC. Index fund managers are usually the biggest holders of large companies.

What percentage of CLIR is owned by institutions?

Funds that file 13F reports held 6.9% of CLIR's shares at Jun 30, 2026, compared with 5.8% a quarter earlier. That counts every manager with more than $100 million in US stocks.

Are hedge funds buying CLIR?

In Q2 2026, 11 funds bought CLIR (7 of them new positions) and 2 sold (1 sold out completely). Among well known investors, 1 added and 0 cut. Our fund sentiment for CLIR is strongly bullish.

What is CLIR's institutional put/call ratio?

Too few option positions were reported for a meaningful ratio.

How current is this CLIR ownership data?

13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.

For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.