Strategy Desk Users' Group

[mattie633]

Well there is some mathematical correlation pre-market and after hours I suppose... I've been told there is. And maybe it's good for just comparing one stock to another. But it's really only accurate, as its defined, during market hours.

The difference between the approaches is that if you use the calc that you asked about, your chances of missing high volume early in the day is high. As the day goes on, your calc will become more accurate. The TAAV calc will tell you at 9:31 if the volume is higher than normal.

It just all depends upon what you're trying to accomplish.