CTM CASTELLUM INC
CASTELLUM INC (CTM) Institutional Ownership
What the institutions did with CTM last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC | 3.1M | 39.1% |
| Meridian Wealth Management, LLC | 863.2K | 10.9% |
| GEODE CAPITAL MANAGEMENT, LLC | 816.0K | 10.3% |
| CAPTRUST FINANCIAL ADVISORS | 626.1K | 7.9% |
| VANGUARD FIDUCIARY TRUST CO | 492.7K | 6.2% |
| STATE STREET CORP | 303.9K | 3.8% |
| BlackRock, Inc. | 265.5K | 3.4% |
| Savvy Advisors, Inc. | 220.3K | 2.8% |
| UBS Group AG | 209.0K | 2.6% |
| NORTHERN TRUST CORP | 171.4K | 2.2% |
| Virtu Financial LLC | 168.4K | 2.1% |
| JANE STREET GROUP, LLC | 129.1K | 1.6% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 94.8K | 1.2% |
| HUB Investment Partners, LLC | 57.4K | 0.7% |
| Creative Planning | 50.0K | 0.6% |
| Almanack Investment Partners, LLC. | 50.0K | 0.6% |
| TWO SIGMA SECURITIES, LLC | 40.5K | 0.5% |
| ARQ WEALTH ADVISORS, LLC | 35.0K | 0.4% |
| Pathstone Holdings, LLC | 31.2K | 0.4% |
| Vanguard Global Advisers, LLC | 27.3K | 0.3% |
| KESTRA PRIVATE WEALTH SERVICES, LLC | 27.3K | 0.3% |
| CAPITAL ADVISORS INC/OK | 22.0K | 0.3% |
| XTX Topco Ltd | 21.9K | 0.3% |
| ACT Advisors, LLC. | 21.1K | 0.3% |
| PKS Advisory Services, LLC | 18.9K | 0.2% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| Virtu Financial LLC | New | 0 | 168.4K | +168.4K |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | 944.9K | 816.0K | -128.9K |
| SEI INVESTMENTS CO | Sold Out | 121.6K | 0 | -121.6K |
| JANE STREET GROUP, LLC | Reduced | 236.8K | 129.1K | -107.7K |
| Meridian Wealth Management, LLC | Increased | 785.8K | 863.2K | +77.4K |
| VANGUARD FIDUCIARY TRUST CO | Increased | 418.3K | 492.7K | +74.4K |
| HUB Investment Partners, LLC | New | 0 | 57.4K | +57.4K |
| UBS Group AG | Increased | 153.5K | 209.0K | +55.4K |
| ARQ WEALTH ADVISORS, LLC | New | 0 | 35.0K | +35.0K |
| HRT FINANCIAL LP | Sold Out | 33.8K | 0 | -33.8K |
| Creative Planning | Increased | 20.3K | 50.0K | +29.7K |
| TWO SIGMA SECURITIES, LLC | Increased | 15.2K | 40.5K | +25.3K |
| XTX Topco Ltd | New | 0 | 21.9K | +21.9K |
| Ground Swell Capital, LLC | Sold Out | 21.1K | 0 | -21.1K |
| ACT Advisors, LLC. | New | 0 | 21.1K | +21.1K |
| PKS Advisory Services, LLC | New | 0 | 18.9K | +18.9K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 3.1M | 3.1M | +12.5K |
| NORTHERN TRUST CORP | Reduced | 181.9K | 171.4K | -10.5K |
| CITIGROUP INC | Sold Out | 7.0K | 0 | -7.0K |
| Tower Research Capital LLC (TRC) | New | 0 | 5.9K | +5.9K |
| Cape Investment Advisory, Inc. | New | 0 | 2.0K | +2.0K |
| Savvy Advisors, Inc. | Reduced | 221.8K | 220.3K | -1.5K |
| TD Waterhouse Canada Inc. | New | 0 | 500 | +500 |
| OSAIC HOLDINGS, INC. | New | 0 | 215 | +215 |
| HARBOUR INVESTMENTS, INC. | New | 0 | 150 | +150 |
| Clearstead Advisors, LLC | New | 0 | 100 | +100 |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.