Castellum (CTM) Institutional Ownership $1.00 +0.06 (+5.82%) Closing price 05/22/2025 04:10 PM EasternExtended Trading$1.00 +0.00 (+0.50%) As of 07:51 AM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Ownership Stock AnalysisAnalyst ForecastsChartEarningsHeadlinesInsider TradesOwnershipSEC FilingsShort InterestBuy This Stock Institutional Ownership Changes (13F Filings) for Castellum (NYSEAMERICAN:CTM)CurrentInstitutional OwnershipPercentage3.39%Number ofInstitutional Buyers(last 12 months)7TotalInstitutional Inflows(last 12 months)$4.00MNumber ofInstitutional Sellers(last 12 months)3TotalInstitutional Outflows(last 12 months)$696.09K Get CTM Insider Trade Alerts Want to know when executives and insiders are buying or selling Castellum stock? Sign up for InsiderTrades.com's daily newsletter to get the latest insider transactions delivered to your inbox daily. Email Address Skip Chart & View Institutional Buying and Selling Data CTM Institutional Buying and Selling by Quarter Castellum Major Shareholders & Ownership History Export to ExcelReporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails5/15/2025 Cubist Systematic Strategies LLC67,680$72K0.0%N/A0.097% 5/8/2025 XTX Topco Ltd65,419$69K0.0%N/A0.094% 4/29/2025 Bank of New York Mellon Corp600,002$636K0.0%-51.1%0.858% 4/17/2025 Inscription Capital LLC250,000$265K0.0%N/A0.357% 2/14/2025 Jane Street Group LLC449,001$898K0.0%+2,180.2%0.642% 2/12/2025 Geode Capital Management LLC299,643$599K0.0%+49.9%0.428% 2/12/2025 PKS Advisory Services LLC42,221$84K0.0%N/A0.060% 2/6/2025 Meridian Wealth Management LLC589,400$1.18M0.1%-2.5%0.843% 2/4/2025 Bank of New York Mellon Corp1,227,824$2.46M0.0%N/A1.756% 8/15/2024 Armistice Capital LLC3,547,987$660K0.0%-23.8%6.691% 5/20/2024 Virtu Financial LLC103,288$27K0.0%+82.2%0.195% 2/8/2024 Meridian Wealth Management LLC503,500$150K0.0%+123.8%1.056% 1/18/2024 Inscription Capital LLC250,000$74K0.0%N/A0.524% 10/17/2023 Meridian Wealth Management LLC225,000$52K0.0%+44.2%0.473% 8/2/2023 Meridian Wealth Management LLC156,000$78K0.0%-16.7%0.369% 7/19/2023 Magnus Financial Group LLC250,000$125K0.0%N/A0.592% 2/9/2023 Almanack Investment Partners LLC.50,000$63K0.0%N/A2.404% 2/1/2023 Kestra Private Wealth Services LLC74,804$94K0.0%N/A3.596% 1/31/2023 Kestra Advisory Services LLC73,519$93K0.0%N/A3.535% (Data available from 1/1/2016 forward) CTM Institutional Ownership - Frequently Asked Questions Who are the largest shareholders of CTM shares? During the previous two years, 11 institutional investors and hedge funds held shares of Castellum. The most heavily invested institutionals were Meridian Wealth Management LLC ($1.18M), Jane Street Group LLC ($898K), Armistice Capital LLC ($660K), Bank of New York Mellon Corp ($636K), Geode Capital Management LLC ($599K), Inscription Capital LLC ($265K), and Magnus Financial Group LLC ($125K).Learn more on CTM's institutional investors. What percentage of Castellum stock is owned by institutional investors? 3.39% of Castellum stock is owned by institutional investors. Learn more on CTM's institutional investor holdings. Which institutional investors have been buying Castellum stock? Of the 10 institutional investors that purchased Castellum 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), Inscription Capital LLC ($500K), Jane Street Group LLC ($429.31K), Meridian Wealth Management LLC ($347.50K), Magnus Financial Group LLC ($250K), Geode Capital Management LLC ($99.71K), and Cubist Systematic Strategies LLC ($67.68K). How much institutional buying is happening at Castellum? Institutional investors have bought a total of 3,076,274 shares in the last 24 months. This purchase volume represents approximately $4.13M in transactions. Which Castellum major shareholders have been selling company stock? The following institutional investors have sold Castellum stock in the last 24 months: Armistice Capital LLC ($1.11M), Bank of New York Mellon Corp ($627.82K), and Meridian Wealth Management LLC ($46.60K). How much institutional selling is happening at Castellum? Institutional investors have sold a total of 1,782,422 shares in the last 24 months. This volume of shares sold represents approximately $711.74K in transactions. Related Companies CPI Card Group Institutional Ownership MaxCyte Institutional Ownership 8X8 Institutional Ownership Lightbridge Institutional Ownership Information Services Group Institutional Ownership OptimizeRx Institutional Ownership Akso Health Group Institutional Ownership Tucows Institutional Ownership Paysign Institutional Ownership Perma-Fix Environmental Services Institutional Ownership This page (NYSEAMERICAN:CTM) was last updated on 5/23/2025 by MarketBeat.com Staff From Our PartnersMarket Panic: Trump Just Dropped a Bomb on Your Stockstock Market Panic: Trump Just Dropped a Bomb on Your Stocks The market is in freefall—and Trump's new tarif...American Alternative | SponsoredWhite House to reset Social Security?Elon Musk's parting DOGE gift looks set to shock America... A single announcement by July 22nd could soon b...Altimetry | SponsoredBuffett’s favorite chart just hit 209% – here’s what that means for goldA Historic Gold Announcement Is About to Rock Wall Street For months, sharp-eyed analysts have watched the ...Golden Portfolio | SponsoredEveryone’s watching Nvidia right now. Here’s why I’m excited.So, unless you’ve been living under a rock, you probably saw the news… Nvidia just signed a $7 BILLION deal...Timothy Sykes | SponsoredIs President Trump Lying To You With This?President Trump’s economic transition isn’t without hardship. But what if there were a smart, tax-free way to ...Colonial Metals | SponsoredJuly 2025 Rule Change to Impact Retirement InvestorsThere's a massive change from a new rule going into effect this July. And it's one the Big Banks are alread...Premier Gold Co | SponsoredTrump’s Bitcoin Reserve is No Accident…Bitcoin's supply is being drained at unprecedented rates, but while most investors focus solely on Bitcoin, th...Crypto 101 Media | SponsoredSilver Is the New Oil—And the World’s Running DryElon's Next Market Move Could Send Silver Soaring Every industry Elon Musk touches explodes—from Tesla to S...Priority Gold | Sponsored Adding Choose a watchlist: Watchlist Adding You have already added five stocks to your watchlist. Upgrade to MarketBeat All Access to add more stocks to your watchlist. Adding Castellum, Inc. Please log in to your account or sign up in order to add this asset to your watchlist. Share Castellum With A Colleague Link copied to clipboard. Get 30 Days of MarketBeat All Access for Free Sign up for MarketBeat All Access to gain access to MarketBeat's full suite of research tools. Start Your 30-Day Trial MarketBeat All Access Features Best-in-Class Portfolio Monitoring Get personalized stock ideas. Compare portfolio to indices. Check stock news, ratings, SEC filings, and more. Stock Ideas and Recommendations See daily stock ideas from top analysts. Receive short-term trading ideas from MarketBeat. Identify trending stocks on social media. Advanced Stock Screeners and Research Tools Use our seven stock screeners to find suitable stocks. Stay informed with MarketBeat's real-time news. Export data to Excel for personal analysis. Sign in to your free account to enjoy these benefits In-depth profiles and analysis for 20,000 public companies. Real-time analyst ratings, insider transactions, earnings data, and more. Our daily ratings and market update email newsletter. Sign in to your free account to enjoy all that MarketBeat has to offer. Sign In Create Account Your Email Address: Email Address Required Your Password: Password Required Log In or Sign in with Facebook Sign in with Google Forgot your password? Your Email Address: Please enter your email address. Please enter a valid email address Choose a Password: Please enter your password. Your password must be at least 8 characters long and contain at least 1 number, 1 letter, and 1 special character. Create My Account (Free) or Sign in with Facebook Sign in with Google By creating a free account, you agree to our terms of service. This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.