Salesforce, IBM share losses contribute to Dow's nearly 350-point fall

Shares of Salesforce and IBM are trading lower Tuesday morning, dragging the Dow Jones Industrial Average into negative territory. The Dow was most recently trading 348 points, or 0.8%, lower, as shares of Salesforce and IBM are contributing to the index’s intraday decline. Salesforce’s shares have declined $7.40, or 3.8%, while those of I…