Why These 15 Cybersecurity Stocks Are Plunging In 2025

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4. Castellum Inc (NYSEAMERICAN:CTM)

Number of Hedge Fund Holders In Q4 2024: 1

Castellum Inc (NYSEAMERICAN:CTM) is a tech services company that specializes in cybersecurity.

The stock is down significantly so far in 2025 as it completed a $4.5 million public offering of 4.5 million units priced at $1.00 each, including shares and warrants exercisable at $1.08 within 60 days. This caused dilution, and the stock fell.

Moreover, an insider with a 10% stake sold 500,000 shares worth $710,275 just before the dilutive event.

CTM stock is down 44% year-to-date.

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