Order Matching in Periodic Call Auction is very tricky…Can somebody please explain.
You can see bids and offers on 1st screenshot, more people are ready to buy at upper circuit, only few are ready to sell.
Can see open column also to know where the price is gonna have a probable open(trade) after collection period of call auction.
Tha main tricky part is how Few Orders get Executed from Upper line and almost orders from last visible line (20 Orders, 1837 Qty) among which Only (1 Order, 100 Qty) left.
Technically Who have Highest Bid price (215 Order , 4,60,981 Qty)should be only execute first…
At other Part , If consider 2nd Line at Buy side (1 order. 500 Qty) have Seller also at sane price (1 Order, 376 Qty), But which is completely unchaged in Buy side.
Even at Total Qty if we see , Before order matching and After Order Matching if we deduct total sell Qty from Total Buy Qty which is also not matching.
In this case, For example,
Total Buy Qty After Order Matching = Total Buy Qty Before Order Matching (4,92,525 Qty ) - Total Sell Qty Before Order matching.(10,112 Qty)
As per above Calculation it should be 482413 , But with difference of 7 Qty it is Showing 482406.
Both Screenshot are taken just before (10.14.59 Am )and after (10.15.01 Am)1 Sec of order matching.So chance of any change in orders is almsot Nill.
Could you please explain how is it working.
Guess one can ignore it, orders change within fraction of second. Can try to see big picture in this case.
For other queries do you have any idea…? Is there any Manual available to understand this. Hope you have understand the query.