bkp_duke
Well-Known Member
Attached documents provide the necessary info on the Nasdaq Opening/Closing Cross.
The essential purpose seems to be that by placing large orders for open or close, one can
(1) access enough liquidity to be executed all at once rather than affecting the market price over the course of the day
(2) adjust your limit price during the preceding several minute window based on the subscription-only Net Order Imbalance Information stream.
(3) benefit from "Imbalance-Only Orders" whose express purpose is to add liquidity (presumably via MMs).
The "Opening and Closing Cross threshold" is 10%, meaning that the Cross is restricted to within 10% of the bid-ask midpoint. However, "the threshold range is dynamic; as the Nasdaq Best Bid and Offer (QBBO) changes, the threshold price range changes." My uneducated interpretation is that the SP can change an unlimited amount up until the QBBO stops changing, then it can only move another 10%.
Therefore, the 12/18 Closing Cross presents an eniticing opportunity for both sides of the trade. As others are saying, front-runners could create a gap up just prior to close upon the initiation of the Net Order Imbalance Information stream at 3:50pm (we saw a similar movement on Friday), by entering LOC orders with a much higher ask. Index funds must then decide whether to 'get it over with' or wait until 12/21.
Did You Know? "Short selling is permitted during the Cross."
So we should all place Limit Sell orders for $2000 or higher.