Leidos Holdings Inc.’s (LDOS) shares have surged an impressive 6.9% over the past month, outperforming the Zacks Aerospace-Defense industry’s gain of 2% as well as the broader Zacks Aerospace sector’s return of 2.1%. The defense contractor has also outpaced the S&P 500’s return of 0.4% in the past month. Image Source: Zacks Investment ResearchA similar stellar performance has been offered by other defense players, such as RTX Corp. (RTX) , Textron Inc. (TXT) and Northrop Grumman Corp. (NOC) , whose shares h ...