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Apple passes Microsoft, takes second place in S&P 500 rankings [u] - Page 2

post #41 of 46
4/22/10 at 11:17pm
Quote:
Originally Posted by Dr Millmoss View Post

Not sure I know exactly what you are asking, but if you're looking for the secret sauce in program trading, I don't think it's anywhere people like us are ever going to see it. Someone gets paid large sums to figure out when it's statistically optimal for the magic buy and sell switches to get thrown.

No, I'm asking if you saw anything that would cause the program trades to jump like that. There's usually some point that they react to. I don't see one.
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post #42 of 46
4/23/10 at 8:27am
Quote:
Originally Posted by melgross View Post

No, I'm asking if you saw anything that would cause the program trades to jump like that. There's usually some point that they react to. I don't see one.

That's what I thought you were asking. Trading programs most likely responds to a large number of market variables, like performance relative to market indexes, trading volume, momentum, and the programmers only know what else. If the system was obvious to outside observers such as ourselves, it probably would not work for the program traders.
Please don't be insane.
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Please don't be insane.
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post #43 of 46
4/23/10 at 11:05am
Quote:
Originally Posted by Dr Millmoss View Post

That's what I thought you were asking. Trading programs most likely responds to a large number of market variables, like performance relative to market indexes, trading volume, momentum, and the programmers only know what else. If the system was obvious to outside observers such as ourselves, it probably would not work for the program traders.

Program trades are mostly useful n a daily basis when there ISN'T some point where it would matter to us. They exist on the basis of reacting in milliseconds in trades of a fraction of a cent. Often, unless they can stop the practice entirely, they get to peek at other trades just before they happen in order to get leverage. But they always go awry when something happens outside of their programming. That's why many of us want to ban, or at least limit their use.

Apple is now up $3.51, realtime. Again, I don't know why. It was up over $4 earlier, and might be again.
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post #44 of 46
4/23/10 at 11:19am
Quote:
Originally Posted by melgross View Post

Program trades are mostly useful n a daily basis when there ISN'T some point where it would matter to us. They exist on the basis of reacting in milliseconds in trades of a fraction of a cent. Often, unless they can stop the practice entirely, they get to peek at other trades just before they happen in order to get leverage. But they always go awry when something happens outside of their programming. That's why many of us want to ban, or at least limit their use.

Apple is now up $3.51, realtime. Again, I don't know why. It was up over $4 earlier, and might be again.

I know some program trading is about making very fast trades on fractional movements, but I believe it's also about combining numerous statistical indictors into a decision system that needs little or no human intervention. A lot of the pros trade on some of the same technical indicators but without the computer-driven buying and selling system.

AAPL is a pure momentum play at the moment, I suspect, so some of the upwards movement is pure gas.
Please don't be insane.
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Please don't be insane.
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post #45 of 46
4/23/10 at 12:07pm
Quote:
Originally Posted by Dr Millmoss View Post

I know some program trading is about making very fast trades on fractional movements, but I believe it's also about combining numerous statistical indictors into a decision system that needs little or no human intervention. A lot of the pros trade on some of the same technical indicators but without the computer-driven buying and selling system.

AAPL is a pure momentum play at the moment, I suspect, so some of the upwards movement is pure gas.

That's likely true.
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post #46 of 46
4/27/10 at 3:07pm
Quote:
Originally Posted by davesw View Post

Microsoft is still $275B market cap last i checked

http://www.google.com/finance?q=NASDAQ%3AMSFT

This explains it quite well, they are using a different methodology.

http://topnews.us/content/217911-app...t-sp-500-index
Been using Apples since 1978 and Macs since 1984
Long on AAPL so biased. Strong advocate for separation of technology and politics on AI.
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Been using Apples since 1978 and Macs since 1984
Long on AAPL so biased. Strong advocate for separation of technology and politics on AI.
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