Shares of aerospace and defense companies are trading lower as Democrats' midterm victories raise concerns over potential constraints on military spending. A Democrat-controlled Congress could challenge President Trump's proposed $1.5 trillion defense budget, creating uncertainty around future Pentagon funding and defense contracts.

Shares of aerospace and defense companies are trading lower as Democrats' midterm victories raise concerns over potential constraints on military spending. A Democrat-controlled Congress could challenge President Trump's proposed $1.5 trillion defense budget, creating uncertainty around future Pentagon funding and defense contracts.