That segment of the market is under the control of idiot savants. They have turned it into a gambling forum. Since other online gambling venues are illegal in the US, where do you think the outside chancers will go?
Yes, you can make money for a long time by arbitraging the markets with millisecond responses. But that is not what serious investors like Berkshire Hathaway or CalPERS do. If you found out that your superannuation fund was doing something like the OP stuff, you would be well advised to pull out your money and put it somewhere wiser.
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