Castellum, Inc. - CTM

Detailed investor-level table based on 13F positions.

Shareholders (13F)

Quarter: Q1 2026 · Compare: Q4 2025
13D/13G major owners: Ownership tab.
Methodology: Market value and % of portfolio use SEC reported VALUE ($000). For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received. Details.
Rows: 0
Investor History Status Shares held Market value ($000) % of portfolio Previous % Rank Change in shares % change in shares Source Date reported
VANGUARD GROUP INC History No change 3,473,227 3,136 0.0% 0.0% 1 0 0.0% Q4 2025 Jan 29, 2026
VANGUARD CAPITAL MANAGEMENT LLC History New 3,081,257 1,817 0.0% 2 +3,081,257 New Q1 2026 May 15, 2026
GEODE CAPITAL MANAGEMENT, LLC History Added to 944,899 557 0.0% 0.0% 3 +171,175 22.12% Q1 2026 May 15, 2026
Meridian Wealth Management, LLC History Added to 785,800 463 0.02% 0.02% 4 +40,650 5.46% Q1 2026 May 06, 2026
CAPTRUST FINANCIAL ADVISORS History New 626,100 369 0.0% 5 +626,100 New Q1 2026 May 14, 2026
VANGUARD FIDUCIARY TRUST CO History New 418,324 246 0.0% 6 +418,324 New Q1 2026 May 08, 2026
STATE STREET CORP History No change 303,900 179 0.0% 0.0% 7 0 0.0% Q1 2026 May 15, 2026
BlackRock, Inc. History No change 265,486 156 0.0% 0.0% 8 0 0.0% Q1 2026 May 13, 2026
JANE STREET GROUP, LLC History Reduced 236,774 139 0.0% 0.0% 9 -107,068 -31.14% Q1 2026 May 12, 2026
Savvy Advisors, Inc. History No change 221,800 130 0.0% 0.01% 10 0 0.0% Q1 2026 May 11, 2026
NORTHERN TRUST CORP History Reduced 181,902 107 0.0% 0.0% 11 -28,709 -13.63% Q1 2026 May 14, 2026
UBS Group AG History Reduced 153,529 90 0.0% 0.0% 12 -2,001,628 -92.88% Q1 2026 May 05, 2026
SEI INVESTMENTS CO History Reduced 121,574 71 0.0% 0.0% 13 -211,497 -63.5% Q1 2026 May 13, 2026
BRIDGEWAY CAPITAL MANAGEMENT, LLC History No change 94,794 55 0.0% 0.0% 14 0 0.0% Q1 2026 May 15, 2026
Almanack Investment Partners, LLC. History No change 50,000 29 0.0% 0.01% 15 0 0.0% Q1 2026 May 05, 2026
HRT FINANCIAL LP History New 33,836 19 0.0% 16 +33,836 New Q1 2026 May 14, 2026
Pathstone Holdings, LLC History No change 31,179 18 0.0% 0.0% 17 0 0.0% Q1 2026 May 11, 2026
Vanguard Global Advisers, LLC History New 27,344 16 0.0% 19 +27,344 New Q1 2026 May 08, 2026
KESTRA PRIVATE WEALTH SERVICES, LLC History No change 27,250 16 0.0% 0.0% 18 0 0.0% Q1 2026 Apr 20, 2026
Global Retirement Partners, LLC History No change 16,439 14 0.0% 0.0% 20 0 0.0% Q4 2025 Feb 06, 2026
CAPITAL ADVISORS INC/OK History New 22,000 12 0.0% 21 +22,000 New Q1 2026 Apr 27, 2026
Ground Swell Capital, LLC History New 21,090 12 0.02% 22 +21,090 New Q1 2026 Apr 21, 2026
Creative Planning History Added to 20,320 11 0.0% 0.0% 23 +320 1.6% Q1 2026 May 12, 2026
TWO SIGMA SECURITIES, LLC History New 15,222 8 0.0% 25 +15,222 New Q1 2026 May 15, 2026
Blue Trust, Inc. History No change 14,724 8 0.0% 0.0% 24 0 0.0% Q1 2026 Apr 20, 2026
Inscription Capital, LLC History No change 12,500 7 0.0% 0.0% 26 0 0.0% Q1 2026 Apr 20, 2026
Welch Group, LLC History No change 10,000 5 0.0% 0.0% 27 0 0.0% Q1 2026 Apr 21, 2026
CITIGROUP INC History Reduced 7,040 4 0.0% 0.0% 28 -19,791 -73.76% Q1 2026 May 11, 2026
JONES FINANCIAL COMPANIES LLLP History Added to 6,366 3 0.0% 0.0% 29 +200 3.24% Q1 2026 May 15, 2026
ESSEX INVESTMENT MANAGEMENT CO LLC History Closed out 0 0 0.29% -2,114,029 -100.0% Q1 2026 May 11, 2026
Legato Capital Management LLC History Closed out 0 0 0.05% -680,945 -100.0% Q1 2026 May 14, 2026
GOLDMAN SACHS GROUP INC History Closed out 0 0 0.0% -353,526 -100.0% Q1 2026 May 15, 2026
Quadrature Capital Ltd History Closed out 0 0 0.0% -217,471 -100.0% Q1 2026 May 15, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLP History Closed out 0 0 0.0% -102,556 -100.0% Q1 2026 May 15, 2026
Bank of New York Mellon Corp History Closed out 0 0 0.0% -100,002 -100.0% Q1 2026 May 05, 2026
TWO SIGMA INVESTMENTS, LP History Closed out 0 0 0.0% -75,384 -100.0% Q1 2026 May 15, 2026
Inspire Advisors, LLC History Closed out 0 0 0.0% -41,700 -100.0% Q1 2026 May 15, 2026
Point72 Asset Management, L.P. History Closed out 0 0 0.0% -34,668 -100.0% Q1 2026 May 15, 2026
Squarepoint Ops LLC History Closed out 0 0 0.0% -26,781 -100.0% Q1 2026 May 15, 2026
ROYAL BANK OF CANADA History Closed out 0 0 0.0% -22,000 -100.0% Q1 2026 May 15, 2026
Centiva Capital, LP History Closed out 0 0 0.0% -19,409 -100.0% Q1 2026 May 14, 2026
PKS Advisory Services, LLC History Closed out 0 0 0.0% -18,931 -100.0% Q1 2026 May 13, 2026
Virtu Financial LLC History Closed out 0 0 0.0% -16,804 -100.0% Q1 2026 May 14, 2026
Revisor Wealth Management LLC History Closed out 0 0 0.0% -12,922 -100.0% Q1 2026 Apr 27, 2026
Independent Advisor Alliance History Closed out 0 0 0.0% -12,835 -100.0% Q1 2026 May 12, 2026
Strengthening Families & Communities, LLC History Closed out 0 0 0.0% -3,000 -100.0% Q1 2026 May 11, 2026
Tower Research Capital LLC (TRC) History Closed out 0 0 0.0% -2,973 -100.0% Q1 2026 May 15, 2026
BANK OF AMERICA CORP /DE/ History Closed out 0 0 -866 -100.0% Q1 2026 May 15, 2026