Dow down nearly 850 points on losses for shares of American Express, Honeywell International Inc.

The Dow Jones Industrial Average is slumping Monday morning with shares of American Express and Honeywell International Inc. facing the biggest losses for the blue-chip average. Shares of American Express
AXP,
-6.81%

and Honeywell International Inc.
HON,
-5.80%

are contributing to the index’s intraday decline, as the Dow
DJIA,
-3.26%

was most recently trading 843 points, or 3.0%, lower. American Express’s shares have fallen $6.70 (6.5%) while those of Honeywell International Inc. have dropped $8.73, or 5.2%, combining for a roughly 102-point drag on the Dow. 3M
MMM,
-5.49%
,
UnitedHealth
UNH,
-4.64%
,
and Dow Inc.
DOW,
-4.88%

are also contributing significantly to the decline. A $1 move in any one of the 30 components of the benchmark equates to a 6.58-point swing.