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Castellum (CTM) Institutional Ownership

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$0.61 -0.01 (-1.13%)
As of 08/21/2026 04:10 PM Eastern
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Institutional Ownership Changes (13F Filings) for Castellum (NYSEAMERICAN:CTM)

Current
Institutional Ownership
Percentage
3.39%
Number of
Institutional Buyers
(last 12 months)
12
Total
Institutional Inflows
(last 12 months)
$1.07M
Number of
Institutional Sellers
(last 12 months)
3
Total
Institutional Outflows
(last 12 months)
$174.08K
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CTM Institutional Buying and Selling by Quarter

Castellum Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
8/20/2026 Two Sigma Securities LLC40,530$29K0.0%+166.3%0.043%
5/14/2026 Sei Investments Co.121,574$72K0.0%-63.5%0.128%
2/18/2026 Quadrature Capital Ltd217,471$196K0.0%+290.3%0.230%
2/13/2026 Inspire Advisors LLC41,700$38K0.0%N/A0.044%
2/13/2026 Essex Investment Management Co. LLC2,114,029$1.91M0.3%-1.8%2.234%
2/10/2026 Goldman Sachs Group Inc.353,526$319K0.0%-4.1%0.374%
2/9/2026 Geode Capital Management LLC773,724$699K0.0%+6.9%0.818%
2/6/2026 Legato Capital Management LLC680,945$615K0.1%+9.6%0.720%
2/4/2026 Meridian Wealth Management LLC745,150$673K0.0%+8.8%0.788%
11/17/2025 Centiva Capital LP122,228$133K0.0%N/A0.129%
11/14/2025 Two Sigma Investments LP77,565$85K0.0%+135.1%0.082%
11/14/2025 Bridgeway Capital Management LLC94,794$103K0.0%N/A0.100%
11/7/2025Vanguard Group Inc.1,277,915$1.39M0.0%+21.5%1.374%
11/6/2025 Savvy Advisors Inc.227,000$247K0.0%+18.8%0.244%
11/6/2025 Essex Investment Management Co. LLC2,153,617$2.35M0.4%+3.0%2.316%
11/4/2025 Meridian Wealth Management LLC684,600$746K0.0%+11.0%0.736%
8/14/2025 Jane Street Group LLC194,733$204K0.0%N/A0.209%
8/12/2025 XTX Topco Ltd135,796$143K0.0%+107.6%0.158%
8/8/2025 Meridian Wealth Management LLC616,800$648K0.0%+6.2%0.717%
8/8/2025 Geode Capital Management LLC599,198$629K0.0%+43.2%0.696%
8/4/2025 Savvy Advisors Inc.191,100$201K0.0%N/A0.222%
5/15/2025Cubist Systematic Strategies LLC67,680$72K0.0%N/A0.097%
5/8/2025XTX Topco Ltd65,419$69K0.0%N/A0.094%
4/29/2025Bank of New York Mellon Corp600,002$636K0.0%-51.1%0.858%
4/17/2025Inscription Capital LLC250,000$265K0.0%N/A0.357%
2/14/2025Jane Street Group LLC449,001$898K0.0%+2,180.2%0.642%
2/12/2025Geode Capital Management LLC299,643$599K0.0%+49.9%0.428%
2/12/2025PKS Advisory Services LLC42,221$84K0.0%N/A0.060%
2/6/2025Meridian Wealth Management LLC589,400$1.18M0.1%-2.5%0.843%
2/4/2025Bank of New York Mellon Corp1,227,824$2.46M0.0%N/A1.756%
8/15/2024Armistice Capital LLC3,547,987$660K0.0%-23.8%6.691%
5/20/2024Virtu Financial LLC103,288$27K0.0%+82.2%0.195%
2/8/2024Meridian Wealth Management LLC503,500$150K0.0%+123.8%1.056%
1/18/2024Inscription Capital LLC250,000$74K0.0%N/A0.524%
10/17/2023Meridian Wealth Management LLC225,000$52K0.0%+44.2%0.473%
8/2/2023Meridian Wealth Management LLC156,000$78K0.0%-16.7%0.369%
7/19/2023Magnus Financial Group LLC250,000$125K0.0%N/A0.592%
2/9/2023Almanack Investment Partners LLC.50,000$63K0.0%N/A2.404%
2/1/2023Kestra Private Wealth Services LLC74,804$94K0.0%N/A3.596%
1/31/2023Kestra Advisory Services LLC73,519$93K0.0%N/A3.535%
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CTM Institutional Ownership - Frequently Asked Questions

During the previous two years, 20 institutional investors and hedge funds held shares of Castellum. The most heavily invested institutionals were Essex Investment Management Co. LLC ($1.91M), Vanguard Group Inc. ($1.39M), Geode Capital Management LLC ($699K), Meridian Wealth Management LLC ($673K), Bank of New York Mellon Corp ($636K), Legato Capital Management LLC ($615K), and Goldman Sachs Group Inc. ($319K).Learn more on Castellum's institutional investors.

3.39% of Castellum's stock is owned by institutional investors. Learn more on CTM's institutional investor holdings.

Of the 18 institutional investors that purchased Castellum's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Bank of New York Mellon Corp ($1.23M), Jane Street Group LLC ($624.04K), Geode Capital Management LLC ($330.58K), Inscription Capital LLC ($250K), Savvy Advisors Inc. ($227K), Vanguard Group Inc. ($225.94K), and Meridian Wealth Management LLC ($164.35K).

Institutional investors have bought a total of 1,053,388 shares in the last 24 months. This purchase volume represents approximately $1.07M in transactions.

The following institutional investors have sold Castellum stock in the last 24 months: Sei Investments Co. ($211.50K), Essex Investment Management Co. LLC ($39.59K), and Goldman Sachs Group Inc. ($15.11K).

Institutional investors have sold a total of 266,191 shares in the last 24 months. This volume of shares sold represents approximately $174.08K in transactions.


Related Companies

Institutional ownership data for NYSEAMERICAN:CTM is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 8/20/2026. New 13F filings are added each quarter as they're published.
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