Oil companies lead declines in the S&P 500, Dow

Oil companies dragged the S&P 500 on Tuesday, fueled by declines in energy prices.

Shares of $Halliburton (HAL.US)$ , Diamondback Energy and Marathon Oil were the top decliners in the broad market index. $Halliburton (HAL.US)$ slid more than 5%, while $Diamondback Energy (FANG.US)$ and $MARA Holdings (MARA.US)$ more than 4% each. $Chevron (CVX.US)$ shares fell more than 2%, making it the top decliner in the Dow Jones Industrial Average.

Oil prices also slumped. Brent crude futures fell about 5%, dipping below $100 a barrel. West Texas Intermediate crude futures for October delivery tumbled more than 4% to $92.54 a barrel. $Camber Energy (CEI.US)$ $Imperial Petroleum (IMPP.US)$ $S&P 500 Index (.SPX.US)$ $SPDR S&P 500 ETF (SPY.US)$