Most of these firms typically hold onto stocks for a few seconds, minutes or hours and usually end the day with little or no position in the market.
Ahhhh, so I am a high frequency trader except I don’t trade stocks, I trade index futures.
I kind of like that name better than daytrader......and I sleep very well at night.
Have computer, will trade...
If you can see the order pipeline, you too, can be a High Frequency trader.