U.S. stock indexes early Thursday headed for their worst day in weeks as yields on government debt extended a decline, with investors shying away from bets on a blistering economic recovery and rising inflation.The Dow Jones Industrial Average
DJIA,
-1.28%
was down 373 points, or 1.1%, at around 34,313, the S&P 500 index
SPX,
-1.27%
lost 55 points, or 1.3%, at 4,303 and the Nasdaq Composite Index
COMP,
-1.23%
declined 1.6% to 14,424, on pace for its worst single-day slide since May 12 at their intraday lows. The drop for stocks came as the 10-year Treasury note
TMUBMUSD10Y,
1.285%
was at 1.31%, hanging near its lowest levels since February and suggesting that fixed-income investors are spooked about the economic path forward or the markets, or both.