Lockheed Martin (LMT) shares plummeted 5.25% in intraday trading on Friday, following news that rival Boeing has been awarded a lucrative next-generation fighter jet contract by the Trump administration. This unexpected turn of events has sent shockwaves through the defense sector, particularly impacting Lockheed Martin, which was considered a strong contender for the contract.

The contract, worth billions of dollars, represents a significant blow to Lockheed Martin's future revenue prospects in the highly competitive defense aviation market. Boeing's stock, in contrast, jumped 5% on the news, highlighting the zero-sum nature of major defense contracts and their impact on industry leaders.

This development comes at a crucial time for defense contractors, as global tensions and modernization efforts drive increased military spending worldwide. The loss of this contract may force Lockheed Martin to reevaluate its strategy and look for other opportunities to maintain its market position in the face of intensifying competition from Boeing and other defense giants.