undisclosed on sell side?, page-11

Only the broker would know the reason why the shares have been listed as undisclosed but from my point of view i am not worried...someone is trying it on and playing games, or realigning portfolio,or last ditch effort to shake the tree,its a bit of a weird trading day with a lot of trades at .287

Per ASX website...The following rules apply to undisclosed quantities:

Undisclosed quantities are visible only to the broker that placed the order.

The quantity may be specified as undisclosed if the order consideration is at least $200,000

ITS displays ?/u? alongside an order whenever there is an undisclosed quantity.
The quantity may be partially disclosed and partially undisclosed, provided the undisclosed portion has a consideration of at least $200,000.
The undisclosed quantity always trades first.
As soon as the consideration for the undisclosed quantity falls below $200,000 the full order quantity becomes disclosed.
As for all orders, the order price is visible.
If you are trading on-line as a private investor, it is probable you will not have access to the quantities of individual orders. However, you may have access to the amalgamated order quantities in market depth screens. Undisclosed quantities are not included in depth screens.