DJ Merck, Caterpillar Share Losses Lead Dow's 269-Point Drop

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The Dow Jones Industrial Average is trading down Monday morning with shares of Merck and Caterpillar delivering the stiffest headwinds for the index.

Shares of Merck (Merck & Co. Inc.) and Caterpillar (Caterpillar Inc.) have contributed to the index's intraday decline, as the Dow (Dow Jones Industrial Average) was most recently trading 269 points, or 0.5%, lower.

Merck's shares have declined $3.71, or 2.6%, while those of Caterpillar are down $20.02, or 2.4%, combining for a roughly 141-point drag on the Dow.

Nike (Nike Inc. Cl B), Chevron (Chevron Corp.), and Goldman Sachs (Goldman Sachs Group Inc.) are also contributing significantly to the decline.

A $1 move in any one of the 30 components of the index equates to a 5.94-point swing.

Data source: Dow Jones Market Data, FactSet. Data compiled October 5, 2026.