02-12-2014, 11:28 AM
A reaction by algo, due to recent oil price decline? But Apple is nothing to do with oil price, right? 
Apple tumbles as much as 6 percent in unusual trading
NEW YORK - Apple Inc shares tumbled shortly after the start of trading on Monday, briefly suffering their largest price drop in at least three months on an unusual spike in volume.
Selling accelerated just before 9:51 a.m. EST (1451 GMT), with more than 6.7 million shares trading in a one-minute stretch, the heaviest minute of trading in Apple since Oct. 29, according to Thomson Reuters data.
The stock lost over 3 percent in that minute, falling as much as 6.4 percent to $111.27. At midafternoon, it was down 3 percent to $115.45.
The cause of the decline was not yet clear, though traders pointed to institutions using selling programs across a wide swath of stocks. Steve Hammer, a trading educator and founder of HFT Alert in Santa Barbara, California, which monitors algorithmic trading, said about 300 different stocks showed elevated price traffic beginning about 9:50 a.m. EST, a sign of institutions putting on sell programs.
...
http://www.todayonline.com/business/appl...avy-volume

Apple tumbles as much as 6 percent in unusual trading
NEW YORK - Apple Inc shares tumbled shortly after the start of trading on Monday, briefly suffering their largest price drop in at least three months on an unusual spike in volume.
Selling accelerated just before 9:51 a.m. EST (1451 GMT), with more than 6.7 million shares trading in a one-minute stretch, the heaviest minute of trading in Apple since Oct. 29, according to Thomson Reuters data.
The stock lost over 3 percent in that minute, falling as much as 6.4 percent to $111.27. At midafternoon, it was down 3 percent to $115.45.
The cause of the decline was not yet clear, though traders pointed to institutions using selling programs across a wide swath of stocks. Steve Hammer, a trading educator and founder of HFT Alert in Santa Barbara, California, which monitors algorithmic trading, said about 300 different stocks showed elevated price traffic beginning about 9:50 a.m. EST, a sign of institutions putting on sell programs.
...
http://www.todayonline.com/business/appl...avy-volume
“夏则资皮,冬则资纱,旱则资船,水则资车” - 范蠡