Nage

Why does stock change price instantly following the index?

If order was placed manually, at least ...
重新再测试 发表于 2012-11-29 16:59

not 2 ~3 second! I know some of the HF get high speed data feed just to save millisecond. So i think the system are very wildly connected instantaneously.  now, who lead who follow, I do not know.

Nage

It is obvious the computer trading mkt. But why did the human being set the program to respond to ev ...
重新再测试 发表于 2012-11-29 17:17

you set at point 0, he set at point +1, the other set at point + 0.5

end up every little move trigger something else.

Nage

looks like millions people set the point to follow the mkt every milli-second
重新再测试 发表于 2012-11-29 17:27

    i guess that is right. Then some of them set at certain obvious point. If there are enough people doing that, that point become resistant and support point.