Scan for Gap Up/Dn, pre market activity in NASDAQ

is there a way for a strategy or indicator in to scan for these

scan for Gap Up/Dn, pre market activity in NASDAQ
scan for news breakout in pre market activity in NASDAQ
scan the ones that has lot of activity in pre-market

 

Search this forum. The question has been asked many times.

 

http://www.nasdaq.com/extended-trading/premarket-mostactive.aspx

Then select Most Advanced tab. There is also an After-Hours option.