The Northrop Grumman Cygnus cargo spacecraft was captured by the International Space Station's robotic arm. Credit: NASA ...

BofA Securities analyst Ronald J. Epstein reiterated the Buy rating on Northrop Grumman Corporation (NYSE: NOC) on Wednesday, lowering the price forecast from $585 to $550.

Northrop CEO Kathy Warden previously warned investors that the B-21 could lose money at first, before later turning a profit.

The profits have the potential to measure in the hundreds of billions of dollars—so pouring $2 billion into a program as ...