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.
Q1 2025 vs. Q4 2024
How the institutions holding Castellum, Inc. changed between Q4 2024 and Q1 2025.
All holders in Q1 2025All holders in Q4 2024
| Measure | Q4 2024 | Q1 2025 | Change |
|---|---|---|---|
| Holders | 20 | 25 | +5 |
| Shares | 4.77M | 3.31M | −1.46M (−30.6%) |
| Value | $9.53M | $3.31M | −$6.22M (−65.3%) |
New holders (11)
Institutions that held Castellum, Inc. at the end of Q1 2025 but not at the end of Q4 2024.
| Institution | Shares | Value | % of portfolio |
|---|---|---|---|
| BlackRock, Inc. | 127,421 | $135.1K | 0.00% |
| Cubist Systematic Strategies, LLC | 67,680 | $71.7K | 0.00% |
| XTX Topco Ltd | 65,419 | $69.3K | 0.00% |
| Inscription Capital, LLC | 250,000 | $65.0K | 0.01% |
| MML Investors Services, LLC | 27,937 | $30.0K | 0.00% |
| Virtu Financial LLC | 19,129 | $20.0K | 0.00% |
| Susquehanna International Group, LLP | 17,691 | $18.8K | 0.00% |
| Two Sigma Securities, LLC | 17,230 | $18.3K | 0.00% |
| Creative Planning | 10,000 | $10.6K | 0.00% |
| Westside Investment Management, Inc. | 680 | $721 | 0.00% |
| American Capital Advisory, LLC | 342 | $363 | 0.00% |
Sold out (6)
Institutions that held Castellum, Inc. at the end of Q4 2024 and filed for Q1 2025 without it.
| Institution | Shares, Q4 2024 | Value, Q4 2024 |
|---|---|---|
| Armistice Capital, LLC | 1,535,505 | $3.07M |
| Jane Street Group, LLC | 449,001 | $898.0K |
| Magnus Financial Group LLC | 250,000 | $500.0K |
| Pensionmark Financial Group, LLC | 11,000 | $22.0K |
| Sunbelt Securities, Inc. | 3,000 | $7.74K |
| Sanctuary Advisors, LLC | 10,000 | $7.07K |