
The number of shares up to which a market maker has to deal at the price quoted. For deals in excess of the market size the market maker reserves the right to alter the price. In the case of order book stocks the price remains valid up to the specified number of shares left on the book.
Found on
http://www.encyclo.co.uk/visitor-contributions.php

The number of shares that can be traded at a given quote price. To trade more than this amount would be to trade outside of the Market size.
Found on
http://www.encyclo.co.uk/visitor-contributions.php
No exact match found.