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Why Rocket Lab (RKLB) Stock Is Up Today

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What Happened?

Shares of aerospace and defense company Rocket Lab (NASDAQ: RKLB) jumped 4.9% in the afternoon session after the company announced it delivered two spacecraft to NASA for the ESCAPADE mission to Mars. 

The twin spacecraft, named Blue and Gold, were delivered to Kennedy Space Flight Center. Rocket Lab completed the design, build, integration, and testing of the spacecraft in just three and a half years, a notably fast timeline for a Mars mission. This achievement highlighted the company's ability to rapidly develop space technology, partly by manufacturing parts in-house. This capability aims to make space science more efficient and cost-effective, a factor that resonated positively with investors.

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What Is The Market Telling Us

Rocket Lab’s shares are extremely volatile and have had 75 moves greater than 5% over the last year. In that context, today’s move indicates the market considers this news meaningful but not something that would fundamentally change its perception of the business.

The previous big move we wrote about was 1 day ago when the stock gained 2.7% on the news that prominent market commentator Jim Cramer highlighted the company as the “most visible” among rocket ship companies. 

Cramer's positive remarks drew investor attention to the stock. He also commented on the broader market environment, suggesting that if the Federal Reserve pursued aggressive interest rate cuts, speculative stocks, including what he termed “literal rocket ship companies” like Rocket Lab, could “roar higher.” This commentary seemed to boost investor confidence, painting a potentially bullish picture for the company's shares under favorable economic conditions.

Rocket Lab is up 114% since the beginning of the year, and at $53.46 per share, it is trading close to its 52-week high of $54.04 from September 2025.

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