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, Q1 2025
Institutional positions in Castellum, Inc. as of Mar 31, 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
- 25
- +5 vs. Q4 2024
- Shares held
- 3.31M
- −1.46M (−30.6%) vs. Q4 2024
- Total value
- $3.31M
- −$6.22M (−65.3%) vs. Q4 2024
- New holders
- 11
- 6 more added
- Sold out
- 6
- 5 more reduced
Compare with Q4 2024: 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, Q1 2025
Shares, value and share of portfolio for each institution holding Castellum, Inc.; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Vanguard Group Inc | 639,628 | $678.0K | 0.00% | +555,687+662.0% | Added |
| Bank of New York Mellon Corp | 600,002 | $636.0K | 0.00% | −627,822−51.1% | Reduced |
| Meridian Wealth Management, LLC | 580,800 | $615.6K | 0.03% | −8,600−1.5% | Reduced |
| Geode Capital Management, LLC | 418,525 | $443.6K | 0.00% | +118,882+39.7% | Added |
| State Street Corp | 156,000 | $165.4K | 0.00% | +106,100+212.6% | Added |
| BlackRock, Inc. | 127,421 | $135.1K | 0.00% | +127,421 | New |
| Northern Trust Corp | 94,120 | $99.8K | 0.00% | +48,095+104.5% | Added |
| Cubist Systematic Strategies, LLC | 67,680 | $71.7K | 0.00% | +67,680 | New |
| XTX Topco Ltd | 65,419 | $69.3K | 0.00% | +65,419 | New |
| Inscription Capital, LLC | 250,000 | $65.0K | 0.01% | +250,000 | New |
| Almanack Investment Partners, LLC. | 50,000 | $53.0K | 0.01% | 00.0% | Unchanged |
| TownSquare Capital, LLC | 44,750 | $47.4K | 0.00% | 00.0% | Unchanged |
| PKS Advisory Services, LLC | 42,222 | $44.8K | 0.01% | +10.0% | Added |
| Tower Research Capital LLC (TRC) | 38,961 | $41.3K | 0.00% | +38,301+5,803.2% | Added |
| MML Investors Services, LLC | 27,937 | $30.0K | 0.00% | +27,937 | New |
| Kestra Private Wealth Services, LLC | 27,250 | $28.9K | 0.00% | −1,000−3.5% | Reduced |
| Virtu Financial LLC | 19,129 | $20.0K | 0.00% | +19,129 | New |
| Susquehanna International Group, LLP | 17,691 | $18.8K | 0.00% | +17,691 | New |
| Two Sigma Securities, LLC | 17,230 | $18.3K | 0.00% | +17,230 | New |
| Ronald Blue Trust, Inc. | 14,724 | $15.6K | 0.00% | 00.0% | Unchanged |
| Creative Planning | 10,000 | $10.6K | 0.00% | +10,000 | New |
| Westside Investment Management, Inc. | 680 | $721 | 0.00% | +680 | New |
| Bank of America Corp | 365 | $387 | 0.00% | −727−66.6% | Reduced |
| American Capital Advisory, LLC | 342 | $363 | 0.00% | +342 | New |
| UBS Group AG | 76 | $81 | 0.00% | −33,419−99.8% | Reduced |
| Armistice Capital, LLC | 0 | $0 | 0.00% | −1,535,505−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −449,001−100.0% | Sold out |
| Magnus Financial Group LLC | 0 | $0 | 0.00% | −250,000−100.0% | Sold out |
| Pensionmark Financial Group, LLC | 0 | $0 | 0.00% | −11,000−100.0% | Sold out |
| Sunbelt Securities, Inc. | 0 | $0 | 0.00% | −3,000−100.0% | Sold out |
| Sanctuary Advisors, LLC | 0 | $0 | 0.00% | −10,000−100.0% | Sold out |