Shares in Rocket Lab Corp were heading for their second day of gains on Monday after the aerospace manufacturer was named as one of four companies that will build tracking satellites for the U.S. Space Development Agency (SDA).

The stock (Nasdaq: RKLB) was up more than 4% in premarket trading on Monday as of this writing. That’s in addition to a jump of 17% on Friday when the news was announced. Share are now trading at record highs.

The SDA, a unit of the United States Space Force, said on Friday that it awarded four companies with contracts to build 72 satellites—or 18 apiece—with the aim of expanding missile tracking and defense systems. The total value of the........

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