Sorry for reviving old thread but it's sad Maybank still limits orders to 500 lots. When I want to buy say 2000 lots, despite there being sellers in the market they can sense someone is queuing to buy and will remove their listing from the market. A lot of this handled by algos. Very unfair!

Btw, even if you buy 500 lots then 200 lots, it is considered as one contract (any counter traded in the same day considered within a single contract, but I'm not sure about contra). I can confirm this as I experienced it recently.