Castellum, Inc.
CTM- Exchange
- NYSE
- Industry
- Services-Management Consulting Services
- SEC CIK
- 0001877939
In the last 90 days, Castellum, Inc. insiders filed 5 open-market purchases and 0 sales; 35 institutions reported holding it in 13F filings for Q2 2026, worth $5.69M in total; no superinvestor holds it.
13F holders, Q2 2025
Institutional positions in Castellum, Inc. as of Jun 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 33
- +8 vs. Q1 2025
- Shares held
- 6.95M
- +3.64M (+110.0%) vs. Q1 2025
- Total value
- $7.30M
- +$3.99M (+120.6%) vs. Q1 2025
- New holders
- 14
- 8 more added
- Sold out
- 6
- 2 more reduced
Compare with Q1 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting CTM on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 35 | $5.69M |
| Q1 2026 | 27 | $4.56M |
| Q4 2025 | 40 | $11.7M |
| Q3 2025 | 42 | $9.27M |
| Q2 2025 | 33 | $7.30M |
| Q1 2025 | 25 | $3.31M |
| Q4 2024 | 20 | $9.53M |
| Q3 2024 | 17 | $265.6K |
| Q2 2024 | 21 | $965.6K |
| Q1 2024 | 21 | $1.58M |
| Q4 2023 | 20 | $534.7K |
| Q3 2023 | 17 | $262.2K |
| Q2 2023 | 17 | $565.7K |
| Q1 2023 | 14 | $989.3K |
| Q4 2022 | 13 | $1.02M |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q2 2025
Shares, value and share of portfolio for each institution holding Castellum, Inc.; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| UBS Group AG | 76 | $80 | 0.00% | 00.0% | Unchanged |
| Bank of America Corp | 589 | $619 | 0.00% | +224+61.4% | Added |
| Strengthening Families & Communities, LLC | 2,700 | $2.86K | 0.00% | +2,700 | New |
| Global Retirement Partners, LLC | 4,812 | $5.05K | 0.00% | +4,812 | New |
| Sunbelt Securities, Inc. | 3,000 | $6.00K | 0.00% | +3,000 | New |
| Creative Planning | 10,000 | $10.5K | 0.00% | 00.0% | Unchanged |
| New Century Financial Group, LLC | 12,000 | $12.6K | 0.01% | +12,000 | New |
| Inscription Capital, LLC | 12,500 | $13.1K | 0.00% | −237,500−95.0% | Reduced |
| Ronald Blue Trust, Inc. | 14,724 | $15.5K | 0.00% | 00.0% | Unchanged |
| Pathstone Holdings, LLC | 15,590 | $16.4K | 0.00% | +15,590 | New |
| Susquehanna International Group, LLP | 17,710 | $18.6K | 0.00% | +19+0.1% | Added |
| Quadrature Capital Ltd | 21,089 | $22.2K | 0.00% | +21,089 | New |
| Squarepoint Ops LLC | 23,940 | $25.1K | 0.00% | +23,940 | New |
| Kestra Private Wealth Services, LLC | 27,250 | $28.6K | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 31,628 | $33.2K | 0.00% | +31,628 | New |
| Two Sigma Investments, LP | 32,996 | $34.6K | 0.00% | +32,996 | New |
| PKS Advisory Services, LLC | 42,222 | $44.3K | 0.01% | 00.0% | Unchanged |
| HRT Financial LP | 50,395 | $52.0K | 0.00% | +50,395 | New |
| Almanack Investment Partners, LLC. | 50,000 | $52.5K | 0.01% | 00.0% | Unchanged |
| Northern Trust Corp | 94,120 | $98.8K | 0.00% | 00.0% | Unchanged |
| Cubist Systematic Strategies, LLC | 94,152 | $98.9K | 0.00% | +26,472+39.1% | Added |
| Virtu Financial LLC | 105,126 | $110.0K | 0.01% | +85,997+449.6% | Added |
| BlackRock, Inc. | 127,421 | $133.8K | 0.00% | 00.0% | Unchanged |
| XTX Topco Ltd | 135,796 | $142.6K | 0.01% | +70,377+107.6% | Added |
| State Street Corp | 156,000 | $163.8K | 0.00% | 00.0% | Unchanged |
| Savvy Advisors, Inc. | 191,100 | $200.7K | 0.01% | +191,100 | New |
| Jane Street Group, LLC | 194,733 | $204.5K | 0.00% | +194,733 | New |
| Bank of New York Mellon Corp | 500,001 | $525.0K | 0.00% | −100,001−16.7% | Reduced |
| Geode Capital Management, LLC | 599,198 | $629.3K | 0.00% | +180,673+43.2% | Added |
| Meridian Wealth Management, LLC | 616,800 | $647.6K | 0.03% | +36,000+6.2% | Added |
| Legato Capital Management LLC | 621,409 | $652.5K | 0.08% | +621,409 | New |
| Vanguard Group Inc | 1,051,978 | $1.10M | 0.00% | +412,350+64.5% | Added |
| Essex Investment Management Co LLC | 2,090,500 | $2.20M | 0.40% | +2,090,500 | New |
| TownSquare Capital, LLC | 0 | $0 | 0.00% | −44,750−100.0% | Sold out |
| Tower Research Capital LLC (TRC) | 0 | $0 | 0.00% | −38,961−100.0% | Sold out |
| MML Investors Services, LLC | 0 | $0 | 0.00% | −27,937−100.0% | Sold out |
| Two Sigma Securities, LLC | 0 | $0 | 0.00% | −17,230−100.0% | Sold out |
| Westside Investment Management, Inc. | 0 | $0 | 0.00% | −680−100.0% | Sold out |
| American Capital Advisory, LLC | 0 | $0 | 0.00% | −342−100.0% | Sold out |