### Comment:
That suddenly makes a lot of sense! Only invest when you get a trend you can predict.

### REPLY:
A lot of the trades aren't actually even towards trends. It is essentially legal front-running. The computers read the signals that someone is executing a sizable trade. The stock price will go up after so the computer executes a faster trade (often by just microseconds) to buy and then sells at a penny or two higher price immediately. People have invested literally hundreds of millions of dollars on routing to stock exchanges to get *microseconds* faster transaction speeds.

### END.