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WISeKey International Holding Ltd, a Switzerland-based cybersecurity firm, saw its U.S.-listed shares soar over 60% on Monday, extending gains from a 136% rally on Friday.
The surge came as the company prepares to launch its next-generation post-quantum-ready satellites with Elon Musk-owned SpaceX, sparking a flurry of retail investor interest.
The stock hit an intraday high of $14 in early trading before settling at $12.88, marking its highest level since January 2022. WISeKey has now gained nearly 600% year-to-date, with most of the rally occurring in the past week.
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The stock was among the top trending tickers on Stocktwits. Data from the platform shows that investors watching the stock increased by over 10% in the 24 hours ending Friday, as message volume increased 17-fold.

SpaceX’s upcoming launch on Jan. 14 will deploy WISeSat satellites, which incorporate WISeKey’s Root of Trust technology and SEALSQ post-quantum chips.
This system integrates cybersecurity with satellite technology, offering secure real-time connectivity for IoT devices in industries such as logistics, agriculture, energy, and infrastructure management.
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The nanosatellite constellation aims to provide global coverage with post-quantum encryption, making it a pioneer in secure satellite communications.

Retail sentiment around the stock improved to ‘extremely bullish’ from ‘bullish’ a day ago as chatter surged to ‘high’ after being at ‘normal’ levels over the weekend.
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However, not all investors are convinced of sustained growth. According to an ongoing poll on Stockwtits, some believe it could be a short-term ‘pop’ that will eventually correct itself.

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