All Dow stocks trading premarket are in the red

All 29 of the Dow Jones Industrial Average components trading in the premarket are declining, as with China has sent Dow futures tumbling. Only DowDuPont Inc.‘s stock is still inactive ahead of the open. Among the biggest decliners, shares of Boeing Co. dropped 2.2%, Merck & Co. shed 2.1% and Caterpillar Inc. dropped 1.4%. The most-active stock is Apple Inc.‘s which fell 1.4%. Dow futures shed 269 points.