the ihub level 2 is all I know it is helpful somewhat. for the grey market all I see is buys and sales no bids or asks no market makers. this morning I saw the 0018 hit the buy/sell column and sit for an hr or so. I assumed lower orders were not filling so took it to the next level. I was wrong the orders were there just not filled yet. looks as tho I got the ball rolling.
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