CLEARSIGN TECHNOLOGIES CORP (CLIR) Institutional Ownership Changes & 13F Activity

CLEARSIGN TECHNOLOGIES CORP (CLIR). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q4 2025). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Northwestern Mutual Wealth Management Co, Geode Capital Management, Llc, Cambridge Investment Research Advisors, Inc., Blackrock, Inc., and Creative Planning.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Flax Pond Capital, LlcBuy+13,549—13,549$7.54KQ4 2025Mar 09, 2026
Raymond James Financial IncBuy+51,847—51,847$28.83KQ4 2025Feb 18, 2026
Creative PlanningBuy+136,053—136,053$75.66KQ4 2025Feb 17, 2026
Susquehanna International Group, LlpBuy+104,759—104,759$58.26KQ4 2025Feb 17, 2026
Rockefeller Capital Management L.P.Buy+81,209—81,209$45.16KQ4 2025Feb 17, 2026
Northern Trust CorpBuy+74,020—74,020$41.16KQ4 2025Feb 17, 2026
Xtx Topco LtdBuy+29,015—29,015$16.14KQ4 2025Feb 17, 2026
Two Sigma Securities, LlcBuy+26,794—26,794$14.90KQ4 2025Feb 17, 2026
Tower Research Capital Llc (Trc)Buy+13,795—13,795$7.67KQ4 2025Feb 17, 2026
Bank Of America CorpBuy+907—907$504.00Q4 2025Feb 17, 2026
State Street CorpBuy+88,989—88,989$49.49KQ4 2025Feb 13, 2026
Wells Fargo & Company/MnBuy+21,050—21,050$11.71KQ4 2025Feb 13, 2026
Centerpoint Advisors, LlcBuy+15,700—15,700$9.00KQ4 2025Feb 13, 2026
Citigroup IncBuy+1—1$1.00Q4 2025Feb 13, 2026
Blackrock, Inc.Buy+199,304—199,304$110.83KQ4 2025Feb 12, 2026
Renaissance Technologies LLCBuy+36,769+89.6%77,800$43.27KQ4 2025Feb 12, 2026
Jane Street Group, LlcBuy+23,825—23,825$13.25KQ4 2025Feb 12, 2026
Hrt Financial LpBuy+17,578—17,578$9.00KQ4 2025Feb 12, 2026
Simplex Trading, LlcBuy+7,211—7,211$4.01KQ4 2025Feb 11, 2026
Deutsche Bank Ag\Buy+4,000—4,000$2.24KQ4 2025Feb 11, 2026
Geode Capital Management, LlcBuy+523,109—523,109$290.96KQ4 2025Feb 09, 2026
Integrity Alliance, Llc.Buy+39,524—39,524$21.98KQ4 2025Feb 09, 2026
Hightower Advisors, LlcBuy+126,809—126,809$70.52KQ4 2025Feb 06, 2026
Americana Partners, LlcBuy+55,000—55,000$30.59KQ4 2025Feb 06, 2026
Prevail Innovative Wealth Advisors, LlcBuy+38,306—38,306$21.30KQ4 2025Feb 06, 2026
Northwestern Mutual Wealth Management CoBuy+607,350—607,350$22.36MQ4 2025Feb 05, 2026
Cambridge Investment Research Advisors, Inc.Buy+443,000—443,000$246.00KQ4 2025Feb 05, 2026
Disciplined Investments, LlcBuy+55,886—55,886$31.08KQ4 2025Feb 05, 2026
Allworth Financial LpBuy+6—6$4.00Q4 2025Feb 05, 2026
Sbi Securities Co., Ltd.Buy+103—103$57.00Q4 2025Feb 03, 2026
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Frequently asked questions about CLIR activity

  • Which institutional owners are buying CLIR?

    Institutional owners buying CLIR include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in CLIR activity?

    "Buy" means an investor increased their reported position in CLIR compared to the prior reporting period. This reflects growing exposure to CLEARSIGN TECHNOLOGIES CORP (CLIR) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in CLIR increasing?

    Institutional interest in CLIR can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.