44 ID Order Type Volume Bid Offer Volume Order Type ID D Dark Limit 100 10.01 10.01 700 MIS 1000 Dark Limit C E Dark Limit 800 10.01 10.01 200 Dark Limit C A Displayed Limit 1000 10.00 10.01 100 Dark Limit C 10.02 1000 Displayed Limit B 14.3.7 Active Dark Limit with MinQty and Cancels Back Dark Limit Order with Minimum Quantity (MIN) instruction and cancels back the remaining quantity once the order size falls below the MIN threshold. NBBO = (10.00, 10.02) FIX Tag 20221 = Y (Yes) ID Order Type Volume Bid Offer Volume Order Type ID A Displayed Limit 1000 10.00 10.02 1000 Displayed Limit B Action: Order C, Dark Sell Midpoint Peg 100 @ 9.99 is entered. Order D, Dark Sell Midpoint Peg 100 @ 10.01 is entered. Order E, Dark Limit Buy of 300, MIN 200 @ 10.01 is entered with 20221 = Y. Result: Order C assigned: Limit 9.99, Booked Price 10.01. Order D assigned: Limit/Booked Price 10.01. Order E fully filled 200 shares of Order C & D @ 10.01 (satisfying MIN 200). Order E fully filled 100 shares of Order D @ 10.01. Order E’s available quantity is less than MIN; cancels back due to tag 20221 = Y. Updated Book NBBO: (10.00, 10.02) ID Order Type Volume Bid Offer Volume Order Type ID E Dark Limit 200 MIN 300 10.01 10.01 100 Midpoint Peg C E Dark Limit 100 10.01 10.01 100 Midpoint Peg D A Displayed Limit 1000 10.00 10.02 1000 Displayed Limit B 14.3.8 Passive Dark Limit: MIS Exhausted, Trades Board Lot Dark Limit Order with Minimum Interaction Size (MIS) instruction has its remaining quantity exhausted below the MIS threshold and trades board lot. NBBO = (10.00, 10.02) ID Order Type Volume Bid Offer Volume Order Type ID A Displayed Limit 1000 10.00 10.02 1000 Displayed Limit B
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