Market Snapshot: Dow futures drop 450 points as Treasury yields continue to fall

U.S. stock-index futures point to a sharply lower start Thursday as yields on government bonds extend their decline as investors shy away from bets on a blistering economic recovery and rising inflation.

U.S. stock-index futures point to a sharply lower start Thursday as yields on government bonds extend their decline as investors shy away from bets on a blistering economic recovery and rising inflation.