Replies to post #326554 on SPDR S&P 500 (SPY)

[TechniTrend]

Maybe this help

https://investorshub.advfn.com/boards/read_msg.aspx?message_id=155832438

[GuTA]

You are describing order flow / DOM interface

[Ferda]

Dangit ye couldn't ask about the zero lines instead?!