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CTM CASTELLUM INC

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COM NEW (common), issuer CIK 1877939

33 managers (35 13F filers) reported a position in CTM shares at 2026-06-30, 7,909,211 shares in all. 12 filers opened a position and 4 filers sold out during the quarter.

Managers
33
13F filers
35
New
12
Added
6
Reduced
4
Sold out
4
Shares held by filers
7,909,211

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
VANGUARD GROUP INCgroup of 3 filers holding3,613,829$2.6M+86,904Timeline
Meridian Wealth Management, LLC863,200$621K0.02%+77,40013F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC816,037$588K<0.01%-128,86213F-HRTimelineGroup
CAPTRUST FINANCIAL ADVISORS626,100$451K<0.01%013F-HRTimeline
STATE STREET CORPin group STATE STREET CORP303,900$219K<0.01%013F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.265,486$191K<0.01%013F-HRTimelineGroup
Savvy Advisors, Inc.220,300$159K<0.01%-1,50013F-HRTimeline
UBS Group AGin group UBS Group AG208,958$150K<0.01%+55,42913F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP171,420$123K<0.01%-10,48213F-HRTimelineGroup
Virtu Financial LLCin group Virtu Financial LLC168,401$121K<0.01%new13F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC129,071$92.9K<0.01%-107,70313F-HRTimelineGroup
BRIDGEWAY CAPITAL MANAGEMENT, LLC94,794$68.2K<0.01%013F-HRTimeline
HUB Investment Partners, LLC57,414$41.3K<0.01%new13F-HRTimeline
Creative Planningin group Creative Planning50,000$36K<0.01%+29,68013F-HRTimelineGroup
Almanack Investment Partners, LLC.50,000$36K<0.01%013F-HRTimeline
TWO SIGMA SECURITIES, LLC40,530$29.2K<0.01%+25,30813F-HRTimeline
ARQ WEALTH ADVISORS, LLC35,000$22.8K<0.01%new13F-HRTimeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC31,179$22.4K<0.01%013F-HRTimelineGroup
KESTRA PRIVATE WEALTH SERVICES, LLCin group Kestra Advisory Services, LLC27,250$19.6K<0.01%013F-HRTimelineGroup
CAPITAL ADVISORS INC/OK22,000$15.8K<0.01%013F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd21,910$15.8K<0.01%new13F-HRTimelineGroup
ACT Advisors, LLC.21,074$15.2K0.01%new13F-HRTimeline
PKS Advisory Services, LLC18,931$13.6K<0.01%new13F-HRTimeline
Blue Trust, Inc.14,724$10.6K<0.01%013F-HRTimeline
Inscription Capital, LLC12,500$9K<0.01%013F-HRTimeline
Welch Group, LLC10,000$7.2K<0.01%013F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP6,366$4.52K<0.01%013F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…5,872$4.23K<0.01%new13F-HRTimelineGroup
Cape Investment Advisory, Inc.2,000$1.44K<0.01%new13F-HRTimeline
TD Waterhouse Canada Inc.500$361<0.01%new13F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.215$154<0.01%new13F-HRTimelineGroup
HARBOUR INVESTMENTS, INC.150$108<0.01%new13F-HRTimeline
Clearstead Advisors, LLC100$72<0.01%new13F-HRTimeline