NVIDIA Corp., Caterpillar share losses contribute to Dow's 500-point drop

Dragged down by negative returns for shares of NVIDIA Corp. and Caterpillar, the Dow Jones Industrial Average is in selloff mode Friday morning. The Dow was most recently trading 507 points lower (-1.0%), as shares of NVIDIA Corp. and Caterpillar have contributed to the index’s intraday decline. NVIDIA Corp.’s shares are off $9.66 (4.1%) w…