th buy sell depth, page-13

boong

Simple example 1:
Pre-open
Buy Queues
Buy Order @1c 500000
Buy Order @0.9c 889888888

Sell Queues
Sell Order @0.9c 499999
Sell Order @1c 560600060

Open price 1c
499999 sold from 0.9c sell queue @1c
1 sold from 1c queue


Example 2
Pre-open
Buy Queues
Buy order @1c 499998
Buy Order @0.9c 889888888

Sell order @0.9c 499999
Sell Order @1c 560600060

Open price 0.9c
499998 sold to 1c buy queue
1 sold to 0.9 buy queue


The above example can also be used in accumulative (multiple buy/sell queues) but will be a bit more complex for the final matched price:

refer to
http://www.asx.com.au/products/calculate-open-close-prices.htm