50 • Pro-rata allocation: [Individual order’s volume/total buy volume] x total sell volume) • Total Buy Volume = 90,000 • Total Sell Volume= 75,000 • Order 1 [40,000 shares / 90,000] x 75,000= 33,300 shares • Order 2 [50,000 shares / 90,000] x 75,000 = 41,700 shares • Order 3 Full fill for 75,000 shares with order 1 and 2 • Order 4 Partial fill for 6,700 shares with order 1 14.4.3 Dark Opt-in Order triggers invitation in the Conditional book Dark Order Book Order Broker Volume Side Market Instruction? 1 A 10,000 Buy 03 4 D 5,000 Buy • Order 1 is a Passive DRK Midpoint order that has opted-in (Market Instruction =”03”) to interact with the conditional book. • Order 1 meets the global minimum size and it is tradable with Order 2 in the Conditional book. Order 2 will receive an invitation to firm-up. Conditional Order Book Order Broker Volume Side Invitation? 2 B 15,000 Sell Yes (Tradeable with #1) Dark Opt-in Order continues to interact with other regular Dark order(s) while waiting for the Conditional order to firm-up • Dark Opt-in Order continues to interact with other regular Dark order(s) while waiting for the Conditional order to firm-up Dark Order Book Order Broker Volume Side Market Instruction? 1 A 10,000 Buy 03 4 D 5,000 Buy 3 (Active) C 1,000 Sell
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