All 30 Dow stocks are trading lower, led by AmEX, Salesforce

All 30 of the Dow Jones Industrial Average’s
DJIA,
+1.00%
components are trading lower ahead of the open, as Dow futures
YM00,
-1.72%
sink 471 points, or 1.5%, toward a 17-month low as fears of an economic slowdown grew. Among the biggest Dow decliners ahead of the open, shares of American Express Co.
AXP,
+1.12%
dropped 3.0%, Salesforce Inc.
CRM,
+2.49%
shed 2.8% and Nike Inc.
NKE,
+2.46%
slid 2.5%. The most-active Dow stock was Apple Inc.
AAPL,
+2.01%
which lost 2.1%, while the Dow’s best performer was Amgen Inc.’s stock
AMGN,
-0.05%,
which slipped only 0.4%. Walt Disney Co.’s stock
DIS,
+1.76%,
which is the Dow’s worst performer over the past three months, year to date and the past 12 months, declined 1.7% premarket toward a two-year low.