Shares of Walgreens Boots and Salesforce are trading lower Thursday morning, leading the Dow Jones Industrial Average selloff. Shares of Walgreens Boots and Salesforce have contributed to the index’s intraday decline, as the Dow was most recently trading 379 points lower (-1.1%). Walgreens Boots’s shares have declined $2.42, or 6.5%, while those of Salesforce are off $3.87 (2.8%), combining for a roughly 41-point drag on the Dow. UnitedHealth American Express and Microsoft are also contributing significantly to the decline. A $1 move in any one of the 30 components of the benchmark results in a 6.59-point swing.