CASTELLUM INC (CTM) Institutional Ownership Changes & 13F Activity

CASTELLUM INC (CTM). 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 Essex Investment Management Co Llc, Geode Capital Management, Llc, Meridian Wealth Management, Llc, Legato Capital Management Llc, and Goldman Sachs Group Inc.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Virtu Financial LlcBuy+16,804—16,804$15.00KQ4 2025Feb 23, 2026
Quadrature Capital LtdBuy+217,471—217,471$196.42KQ4 2025Feb 17, 2026
Northern Trust CorpBuy+210,611—210,611$190.22KQ4 2025Feb 17, 2026
Susquehanna International Group, LlpBuy+102,556—102,556$92.63KQ4 2025Feb 17, 2026
Bridgeway Capital Management, LlcBuy+94,794—94,794$85.62KQ4 2025Feb 17, 2026
Two Sigma Investments, LpBuy+75,384—75,384$68.09KQ4 2025Feb 17, 2026
Point72 Asset Management, L.P.Buy+34,668—34,668$31.31KQ4 2025Feb 17, 2026
Royal Bank Of CanadaBuy+22,000—22,000$20.00KQ4 2025Feb 17, 2026
Creative PlanningBuy+20,000—20,000$18.06KQ4 2025Feb 17, 2026
Jones Financial Companies LllpBuy+6,166—6,166$5.57KQ4 2025Feb 17, 2026
Tower Research Capital Llc (Trc)Buy+2,973—2,973$2.69KQ4 2025Feb 17, 2026
Bank Of America CorpBuy+866—866$782.00Q4 2025Feb 17, 2026
Essex Investment Management Co LlcBuy+2,114,029—2,114,029$1.91MQ4 2025Feb 13, 2026
Sei Investments CoBuy+333,071—333,071$300.83KQ4 2025Feb 13, 2026
State Street CorpBuy+303,900—303,900$274.48KQ4 2025Feb 13, 2026
Inspire Advisors, LlcBuy+41,700—41,700$37.66KQ4 2025Feb 13, 2026
Pathstone Holdings, LlcBuy+31,179—31,179$28.16KQ4 2025Feb 13, 2026
Citigroup IncBuy+26,831—26,831$24.23KQ4 2025Feb 13, 2026
Squarepoint Ops LlcBuy+26,781—26,781$24.19KQ4 2025Feb 13, 2026
Centiva Capital, LpBuy+19,409—19,409$17.53KQ4 2025Feb 13, 2026
Jane Street Group, LlcBuy+343,842—343,842$310.56KQ4 2025Feb 12, 2026
Blackrock, Inc.Buy+265,486—265,486$239.79KQ4 2025Feb 12, 2026
Goldman Sachs Group IncBuy+353,526—353,526$319.31KQ4 2025Feb 10, 2026
Bank Of New York Mellon CorpBuy+100,002—100,002$90.32KQ4 2025Feb 10, 2026
Geode Capital Management, LlcBuy+773,724—773,724$699.02KQ4 2025Feb 09, 2026
Legato Capital Management LlcBuy+680,945—680,945$615.03KQ4 2025Feb 06, 2026
Meridian Wealth Management, LlcBuy+745,150—745,150$673.02KQ4 2025Feb 04, 2026
Independent Advisor AllianceBuy+12,835—12,835$11.59KQ4 2025Feb 04, 2026
Strengthening Families & Communities, LlcBuy+3,000—3,000$2.71KQ4 2025Feb 03, 2026
Pks Advisory Services, LlcBuy+18,931—18,931$17.10KQ4 2025Feb 02, 2026
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Frequently asked questions about CTM activity

  • Which institutional owners are buying CTM?

    Institutional owners buying CTM 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 CTM activity?

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

  • Is institutional interest in CTM increasing?

    Institutional interest in CTM 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.