This is not a market that has any connection to the real world, but a casino–and you are definitely not the house:
As the New York Times dealbook noted in May:
These are short-term bets. Very short. The founder of Tradebot, in Kansas City, Mo., told students in 2008 that his firm typically held stocks for 11 seconds. Tradebot, one of the biggest high-frequency traders around, had not had a losing day in four years, he said.
….The fact that the vast majority of stock market trades are held for 11 seconds shows that the stock market is not a real market with real traders governed by the law of supply and demand, and with no real price discovery.
There is no way the efficient markets hypothesis, in either the weak or strong form, is operating. Eleven second holds can’t be based on information about the quality of the investment because the underlying investment doesn’t fluctuate that rapidly.
Sounds like a good argument for a 0.1% transaction tax.