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标题: [闲谈] I have a question [打印本页]

作者: 重新再测试 时间: 2012-11-29 16:59 标题: I have a question

Why does stock change price instantly following the index?

If order was placed manually, at least, there should be 2-3 seconds delay.

If computers are trading, why do they have to trade on every point change?

作者: Nage 时间: 2012-11-29 17:06

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.

作者: 重新再测试 时间: 2012-11-29 17:17

It is obvious the computer trading mkt. But why did the human being set the program to respond to every point change

作者: aimei 时间: 2012-11-29 17:18

回复 3# 重新再测试

I never understand

作者: 重新再测试 时间: 2012-11-29 17:22

if the computers trade every m-second, how much fund they can put into the mkt and make money? just for fun?

作者: Nage 时间: 2012-11-29 17:22

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.

作者: 重新再测试 时间: 2012-11-29 17:27

looks like millions people set the point to follow the mkt every milli-second

作者: Nage 时间: 2012-11-29 17:30

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.

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