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C

Castellum CTM · USD

Information Technology · US listing · 🇺🇸 United States

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0.38

-1.13%

Close of 9 Nov 2026, in USD

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Reference data, closing prices and charts across 45,000 companies, plus crypto, commodities and currencies.

Largest shareholders

As filed, so dates differ, and a group and its funds can both appear.

HolderSharesStakeChangeFiled
Wright (Jay O)9m9.54%−500k19 May 2025
Fuller (Mark C)6.6m6.99%−500k19 May 2025
Essex Investment Management Company, LLC2.1m2.21%+2.1m30 Jun 2025
The Vanguard Group, Inc.1.1m1.11%+412.4k30 Jun 2025
Legato Capital Management LLC621.4k0.66%+621.4k30 Jun 2025
Meridian Wealth Management, LLC616.8k0.65%+36k30 Jun 2025
Geode Capital Management, L.L.C.599.2k0.63%+180.7k30 Jun 2025
BNY Wealth500k0.53%−100k30 Jun 2025
Jane Street Capital, L.L.C.194.7k0.21%+194.7k30 Jun 2025
Savvy Advisors, Inc.191.1k0.20%+191.1k30 Jun 2025
State Street Global Advisors (US)156k0.16%—30 Jun 2025
XTX Markets LLC135.8k0.14%+70.4k30 Jun 2025
BlackRock Institutional Trust Company, N.A.127.4k0.13%—30 Jun 2025
Virtu Americas LLC105.1k0.11%+86k30 Jun 2025
Cubist Systematic Strategies, LLC94.2k0.10%+26.5k30 Jun 2025

Short interest

Shares sold short, 15 Oct 2026. US exchange data.

6m

+11.4% on the period before. 14.6 days to cover.

Short volume

Share of the day's trading sold short, 5 Nov 2026

69.4%

Last 60 trading days.

Failed deliveries

Shares not delivered on settlement, from the SEC

  • 29 Sept 20261 shares
  • 23 Sept 20261 shares
  • 21 Sept 202622,287 shares
  • 17 Sept 202652,755 shares
  • 11 Sept 202611 shares

Sources and methodology

Data on this tab
Our data supplier
Chart on the Overview
TradingView

Nothing here is investment advice. Prices can be delayed or wrong, so check with the exchange before relying on them. Data for this page. How we cover markets.