some tough questions need to be asked, page-4

watso suspects that most trading in gda, is in DARK POOLS.

from a government website - information about DARK POOLS


What are dark pools?

A 'dark pool' is a system that enables assets such as shares to be traded away from public exchanges such as the Australian Securities Exchange (ASX) and Chi-X.

Dark pools were originally created to allow traders to anonymously execute large-scale share transactions that would normally cause big price movements on public markets, like the ASX. These are known as 'block trades'.

Trades done 'in the dark' are hidden from the public and other brokers before and during the trade. The details of the trade are reported once it is complete.
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scary stuff