RE The archipelago B/A should be $28.5 (1300)/$30 (14517). RMBS looks like bid/ask at about 30 now and Archiepago lot size is down to 13117 from 14517 so 1300 shares got bitten off at $30 AH. View: Combined / Archipelago / INET COMBINED REAL-TIME ORDER BOOK Bid Orders Price Order Size Institution 127.00 1 Archipelago 40.00 5000 Archipelago 35.00 3050 Archipelago 33.15 300 Archipelago 33.00 2000 Archipelago 32.00 7575 Archipelago 31.90 350 Archipelago 31.55 1000 Archipelago 30.20 100 Archipelago 30.00 13117 Archipelago Ask Orders Price Order Size Institution 26.95 300 Archipelago 28.48 1700 Archipelago 28.50 2900 Archipelago 28.75 750 INET 28.89 800 INET 28.96 120 INET 29.00 50 INET 29.75 200 Archipelago 29.99 100 INET 30.10 500 Archipelago