MM's pass small increments in pre-market(illiquid trades more often) to signal to large(stacked and simulated) buyers that they will be bringing stock in these prices. Usually, its the seller buying from their own stock. Indicating to market to "come and get it". Hence GTSM and CDEL with simulation trades right now(ie; showing 5k/10k asks) but every "hit the ask" fills more than 5k trades. Hence, "stacked" and "simulated" with "dark pools" of stock. But, they do flicker their stack on asks when "simulation" occurs. Ie; x trades within x minutes/hours; therefore, "activity" occurs; therefore, show my stock to let the buyer know she can have it all if she wants. Otherwise, revert back to simulation. Computer games.
If you noticed, stock showed up during day at these prices - indicating the MM will move the market in this area next and see what kind of supply/demand occurs. Which is exactly what happened during day.
News 
Market Data 
Discover 
AI
