Shares of Palantir Technologies ( PLTR ) rose for a second consecutive session Tuesday following news that the North Atlantic Treaty Organization (NATO) had acquired the analytics software provider's artificial intelligence -enabled military system.

Palantir shares closed nearly 5% higher Monday as the deal with the Brussels-based military alliance helped ease investor concerns that Europe may rely less on American defense contractors amid an uncertain trade outlook.

The stock was up a further 5% in recent trading and was among the top gainers in the S&P 500 .

Shares have added nearly 30% of their value in 2025 and have skyrocketed 345% over the past 12 months.

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